153-500: J20 or J-20 may refer to: Vehicles [ edit ] Aircraft [ edit ] Chengdu J-20 , a Chinese stealth fighter Reggiane J 20 , an Italian fighter in service with the Swedish Air Force Soko J-20 Kraguj , a Yugoslavian light attack aircraft Automobiles [ edit ] Jeep J20 , an American pickup truck Toyota Land Cruiser (J20) ,
306-517: A Homo erectus who used fire , have been dated to between 680,000 and 780,000 years ago . The fossilized teeth of Homo sapiens (dated to 125,000–80,000 years ago) have been discovered in Fuyan Cave . Chinese proto-writing existed in Jiahu around 6600 BCE, at Damaidi around 6000 BCE, Dadiwan from 5800 to 5400 BCE, and Banpo dating from the 5th millennium BCE. Some scholars have suggested that
459-561: A failed war in northern Korea provoked widespread unrest. Under the succeeding Tang and Song dynasties , Chinese economy, technology, and culture entered a golden age. The Tang dynasty retained control of the Western Regions and the Silk Road, which brought traders to as far as Mesopotamia and the Horn of Africa , and made the capital Chang'an a cosmopolitan urban center. However, it
612-468: A nuclear-weapon state with the world's largest standing army by military personnel and the second-largest defense budget . It is a great power , and has been described as an emerging superpower . China is known for its cuisine and culture, and has 59 UNESCO World Heritage Sites , the second-highest number of any country . The word "China" has been used in English since the 16th century; however, it
765-634: A Japanese off-road vehicle Locomotives [ edit ] LNER Class J20 , a British steam locomotive class Ships [ edit ] HSwMS Östergötland (J20) , an Östergötland -class destroyer of the Swedish Navy INS ; Nirupak (J20) , a Sandhayak -class survey ship of the Indian Navy Other uses [ edit ] J20 Nationell , a Swedish junior hockey league Acute bronchitis County Route J20 (California) DisruptJ20 , founded to protest
918-564: A chin-mounted enclosed electro-optical sensor with a forward field-of-view for air-to-air applications. In 2015, Beijing A-Star Science and Technology was developing passive sensors, the EOTS-89 electro-optical targeting system and the EORD-31 infrared search and track , for the J-20. The passive sensors enhance the capability to engage stealthy aircraft. The J-20's usage of electro-optical sensors resembles
1071-401: A climate very suitable for agriculture and the country has been the world's largest producer of rice, wheat, tomatoes, eggplant, grapes, watermelon, spinach, and many other crops. In 2021, 12 percent of global permanent meadows and pastures belonged to China, as well as 8% of global cropland. China is one of 17 megadiverse countries , lying in two of the world's major biogeographic realms :
1224-549: A compressed airframe, folded fins, and a high-performance dual-pulse motor to reduce size, while maintaining the same level of performance as the PL-15. The J-20 will likely use air-to-air missiles to engage in air superiority combat with other aircraft and to destroy high-value airborne assets. Supplemental missions may include launching anti-radiation missiles and air-to-ground munitions for precision-strike missions. The wings include four hardpoints for auxiliary fuel tanks to extend
1377-521: A cultural identity among its populace still remembered in the ethnonym of the modern Han Chinese . The Han expanded the empire's territory considerably , with military campaigns reaching Central Asia, Mongolia , Korea , and Yunnan , and the recovery of Guangdong and northern Vietnam from Nanyue . Han involvement in Central Asia and Sogdia helped establish the land route of the Silk Road , replacing
1530-613: A disputed land border with India and Bhutan . China is additionally involved in maritime disputes with multiple countries over territory in the East and South China Seas , such as the Senkaku Islands and the entirety of South China Sea Islands . The People's Republic of China is a one-party state governed by the Chinese Communist Party (CCP). The CCP is officially guided by socialism with Chinese characteristics , which
1683-700: A far-reaching popular uprising (the May Fourth Movement ). In the late 1920s, the Kuomintang under Chiang Kai-shek was able to reunify the country under its own control with a series of deft military and political maneuverings known collectively as the Northern Expedition . The Kuomintang moved the nation's capital to Nanjing and implemented "political tutelage", an intermediate stage of political development outlined in Sun Yat-sen's Three Principles of
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#17328516048671836-471: A high density of plant species including numerous rare endemics. Tropical and seasonal rainforests , though confined to Yunnan and Hainan , contain a quarter of all the animal and plant species found in China. China has over 10,000 recorded species of fungi . In the early 2000s, China has suffered from environmental deterioration and pollution due to its rapid pace of industrialization. Regulations such as
1989-558: A long and blended fuselage , with a chiseled nose section and a frameless canopy . Immediately behind the cockpit are low-observable diverterless supersonic inlet (DSI) intakes. All-moving canard surfaces with pronounced dihedral are placed behind the intakes, followed by leading edge extensions (LERX) merging into the delta wing with forward-swept trailing edges. The aft section has twin outward canted all-moving fins, short but deep ventral strakes, and conventional or low-observable engine exhausts. One important design criterion for
2142-489: A major focus, special economic zones (SEZs) were created. Inefficient state-owned enterprises (SOEs) were restructured and some closed. This marked China's transition away from planned economy. China adopted its current constitution on 4 December 1982. In 1989, there were protests such those in Tiananmen Square , and then throughout the entire nation. Zhao Ziyang was put under house arrest for his sympathies to
2295-404: A permanent navy which was supported by the developed shipbuilding industry along with the sea trade. Between the 10th and 11th century CE, the population of China doubled to around 100 million people, mostly because of the expansion of rice cultivation in central and southern China, and the production of abundant food surpluses. The Song dynasty also saw a revival of Confucianism , in response to
2448-480: A press conference that the radars on India's Su-30MKI fighters were "good enough" and could detect a J-20 from "several kilometers away" while answering a question on whether the J-20 posed a threat to India. However, experienced analysts didn't take Dhanoa's claim seriously due to his exaggeration and the lack of validity. Analyst Justin Bronk from Royal United Services Institute noted that Chinese were possibly flying
2601-487: A second operator includes the potential for better interpreting and exploiting the enormous sensory data that could overload the limited cognitive and processing capacity for a single human, especially in a contested air combat environment. In March 2022, Chinese state media reported that the J-20, reportedly with one engine replaced by the WS-15, had performed flight trials. In December 2022, Chinese military analysts indicated
2754-422: A second test flight of an hour and 20 minutes took place. On 5 May 2011, a 55-minute test flight was held that included retraction of the landing gear. On 26 February 2012, the first prototype J-20 performed various low-altitude maneuvers. On 10 May 2012, the second prototype (numbered "2002") underwent high-speed taxiing tests, and flight testing that began later that month. On 20 October 2012, photographs of
2907-471: A short-range missile. In 2023, the United States reported that China planned to increase the J-20's missile capacity in "low-observable configuration". A staggered arrangement of six PL-15s is possible with modified rail launchers under development. A thinner profile missile, designated PL-16 , was also reportedly under development in 2020 to allow the six missiles for internal carriage. The PL-16 features
3060-497: A single transmit/receive module surface in the J-16's AESA radar system, J-20s likely contain 2000–2200 transmit/receive modules. A Chinese study commissioned by the military suggested the J-20's AESA radar would have a tracking range of 200 km (120 mi; 110 nmi) with simultaneous tracking for 20 targets, and multi-target engagement capabilities. The nose includes electro-optical sensors for an omnidirectional view, including
3213-535: A slight alteration to tail booms, suggesting the installation of rear-facing sensors. PLAAF also modified an airliner to serve as the AESA radar test-bed for the J-20 program. On 13 September 2015, a new prototype, marked "2016", began testing. It had noticeable improvements, such as apparently modified DSI bumps on the intakes. The DSI changes suggested the possibility of more powerful engines being used than its predecessors, likely to be an advanced 14-ton thrust derivative of
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#17328516048673366-537: A stealth shaping, yielding signature performance in a mature design similar to the F-22. The diverterless supersonic inlets (DSI) leading into serpentine inlets (S-ducts) can obscure the reflective surface of the engine from radar detection. DSI intakes save weight, reduce complexity, and minimize radar signature. Additional low-observable features include a flat fuselage bottom holding an internal weapons bay, sawtooth edges on compartment doors, mesh coverings on cooling ports at
3519-806: A term which developed under the Western Zhou dynasty in reference to its royal demesne . It was used in official documents as an synonym for the state under the Qing . The name Zhongguo is also translated as 'Middle Kingdom' in English. China is sometimes referred to as " mainland China " or "the Mainland" when distinguishing it from the Republic of China or the PRC's Special Administrative Regions . Archaeological evidence suggests that early hominids inhabited China 2.25 million years ago. The hominid fossils of Peking Man ,
3672-518: A twin-seat J-20 variant powered by thrust vectoring WS-10C. In October 2021, a taxiing prototype, dubbed J-20S by analysts, was spotted near Chengdu Aerospace Corporation facilities, making J-20S the first-ever two-seat stealth fighter . The twin-seat design allows the possibility for the second operator to coordinate attacks and reconnaissance missions from other friendly aircraft via networking or unmanned combat aerial vehicles (UCAVs) linked via " loyal wingman " systems and sensors. The advantage of
3825-478: A wide-angle holographic heads-up display (HUD). The size of the primary LCD screen is 610 mm × 230 mm (24 in × 9 in), 650 mm (25.63 in) diagonal size, with two illumination systems for operational redundancy . The aircraft is fitted with a helmet-mounted display (HMD) system, which displays combat information inside the pilots' helmet visor and facilities firing missiles at high off-boresight angle. The main weapon bay
3978-454: Is Marxism adapted to Chinese circumstances . The Chinese constitution states that the PRC "is a socialist state governed by a people's democratic dictatorship that is led by the working class and based on an alliance of workers and peasants," that the state institutions "shall practice the principle of democratic centralism ," and that "the defining feature of socialism with Chinese characteristics
4131-454: Is a twin-engine all-weather stealth fighter developed by China 's Chengdu Aerospace Corporation for the People's Liberation Army Air Force (PLAAF). The J-20 is designed as an air superiority fighter with precision strike capability. The aircraft has three notable variants : the initial production model, the revised airframe variant with new engines and thrust-vectoring control, and
4284-465: Is a country in East Asia . With a population exceeding 1.4 billion, it is the second-most populous country after India , representing 17.4% of the world population. China spans the equivalent of five time zones and borders fourteen countries by land . With an area of nearly 9.6 million square kilometers (3,700,000 sq mi), it is the third-largest country by total land area. The country
4437-469: Is a matter of debate. Alternative suggestions include the names for Yelang and the Jing or Chu state. The official name of the modern state is the "People's Republic of China" ( simplified Chinese : 中华人民共和国 ; traditional Chinese : 中華人民共和國 ; pinyin : Zhōnghuá rénmín gònghéguó ). The shorter form is "China" ( 中国 ; 中國 ; Zhōngguó ), from zhōng ('central') and guó ('state'),
4590-453: Is a multirole air superiority fighter , with the interceptor role being just one of the options. The J-20 avionics aim to obtain situational awareness through advanced sensor and data fusion while denying situational awareness to the adversary through stealth and electronic warfare. The J-20 features an integrated avionic suite consisting of multi-spectral sensors capable of providing omnidirectional coverage with. Official information on
4743-829: Is bounded by the Bohai , Yellow , East China and South China seas. China connects through the Kazakh border to the Eurasian Steppe . The territory of China lies between latitudes 18° and 54° N , and longitudes 73° and 135° E . The geographical center of China is marked by the Center of the Country Monument at 35°50′40.9″N 103°27′7.5″E / 35.844694°N 103.452083°E / 35.844694; 103.452083 ( Geographical center of China ) . China's landscapes vary significantly across its vast territory. In
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4896-511: Is capable of housing both long-range air-to-air missiles (AAM; PL-15 – PL-21 ) and precision-guided munitions ( PGM ; LS-6/50 , LS-6/100, FT-7 ), while the two smaller lateral weapon bays behind the air inlets are intended for short-range AAMs ( PL-10 ). These side bays allow closure of the bay doors prior to firing the missile, enhancing stealth and allowing the missile to be fired in the shortest possible time. The main bay may carry four medium/long-range AAMs, with each lateral bay carrying
5049-569: Is commonly agreed that pre-modern China's population experienced two growth spurts, one during the Northern Song period (960–1127), and other during the Qing period (around 1700–1830). By the High Qing era China was possibly the most commercialized country in the world, and imperial China experienced a second commercial revolution by the end of the 18th century. On the other hand, the centralized autocracy
5202-415: Is divided into 33 province-level divisions : 22 provinces , five autonomous regions , four municipalities , and two semi-autonomous special administrative regions . Beijing is the country's capital, while Shanghai is its most populous city by urban area and largest financial center . China is considered one of the cradles of civilization : the first human inhabitants in the region arrived during
5355-410: Is equipped with a new variant of WS-10 Taihang engines with serrated afterburner nozzles to enhance stealth. Report indicated Chengdu Aerospace Corporation terminated the manufacturing of J-20 with Russian engines in mid-2019. Chinese media reported that a new variant of the J-20 was unveiled on July 8, 2020, and entered mass production the same day. The only change mentioned was that the new J-20
5508-461: Is home to a variety of forest types. Cold coniferous forests predominate in the north of the country, supporting animal species such as moose and Asian black bear , along with over 120 bird species. The understory of moist conifer forests may contain thickets of bamboo . In higher montane stands of juniper and yew , the bamboo is replaced by rhododendrons . Subtropical forests, which are predominate in central and southern China, support
5661-463: Is not designed for thrust vectoring, unlike the WS-10 TVC demonstrated on a J-10 in 2018 China International Aviation & Aerospace Exhibition . Analyst Jamie Hunter believed the new engine type is what he called WS-10B-3, a Chinese-made thrust-vectoring engine demonstrated on the 2018 Zhuhai Airshow . In January 2021, South China Morning Post reported that the J-20 would replace its engines with
5814-451: Is protected by law, and as of 2005 , the country has over 2,349 nature reserves , covering a total area of 149.95 million hectares, 15 percent of China's total land area. Most wild animals have been eliminated from the core agricultural regions of east and central China, but they have fared better in the mountainous south and west. The Baiji was confirmed extinct on 12 December 2006. China has over 32,000 species of vascular plants, and
5967-665: Is said to represent the initial pre-serial standard. By the end of 2014, three more pre-serial prototypes were flown, each with incremental improvements to the design. The fourth prototype "2012" was tested on 26 July 2014, sharing many similarities with the "2011". This pair of aircraft was reportedly powered by AL-31FM2 engines. The fifth prototype, numbered "2013", took off on 29 November 2014. Three weeks later, number "2015" made its maiden flight on 19 December 2014, indicating rapid construction capability. Both prototypes featured retractable aerial refueling probes and infrared-suppression engine nozzles. The sixth prototype "2015" featured
6120-447: Is the direct ancestor of modern Chinese characters . The Shang were overthrown by the Zhou , who ruled between the 11th and 5th centuries BCE, though the centralized authority of Son of Heaven was slowly eroded by fengjian lords. Some principalities eventually emerged from the weakened Zhou and continually waged war with each other during the 300-year Spring and Autumn period . By
6273-401: Is the leadership of the Chinese Communist Party." The PRC officially terms itself as a democracy , using terms such as "socialist consultative democracy", and " whole-process people's democracy ". However, the country is commonly described as an authoritarian one-party state and a dictatorship , with among the heaviest restrictions worldwide in many areas, most notably against freedom of
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6426-559: Is the world's leading investor in renewable energy and its commercialization , with $ 546 billion invested in 2022; it is a major manufacturer of renewable energy technologies and invests heavily in local-scale renewable energy projects. Long heavily relying on non-renewable energy sources such as coal, China's adaptation of renewable energy has increased significantly in recent years, with their share increasing from 26.3 percent in 2016 to 31.9 percent in 2022. In 2023, 60.5% of China's electricity came from coal (largest producer in
6579-506: Is very close to the final J-20 production configuration. Since '2017' was likely the last J-20 prototype, the low rate initial production (LRIP) of the J-20 is likely to begin in 2016. Chinese media reported that the design of the J-20 was frozen and finalized, as formal ceremonies were held for the prototype "2017" after completing the flight testing. The LRIP version later appeared in December 2015. In March 2017, Chinese media reported that
6732-672: The Encyclopædia Britannica , to 9,596,961 km (3,705,407 sq mi) according to the UN Demographic Yearbook , and The World Factbook . China has the longest combined land border in the world , measuring 22,117 km (13,743 mi) and its coastline covers approximately 14,500 km (9,000 mi) from the mouth of the Yalu River (Amnok River) to the Gulf of Tonkin . China borders 14 nations and covers
6885-452: The 18th CCP National Congress in 2012. Shortly after his ascension to power, Xi launched a vast anti-corruption crackdown , that prosecuted more than 2 million officials by 2022. During his tenure , Xi has consolidated power unseen since the initiation of economic and political reforms. China's landscape is vast and diverse, ranging from the Gobi and Taklamakan Deserts in the arid north to
7038-738: The Cultural Revolution , sparking a decade of political recrimination and social upheaval that lasted until Mao's death in 1976. In October 1971, the PRC replaced the ROC in the United Nations, and took its seat as a permanent member of the Security Council. After Mao's death, the Gang of Four was arrested by Hua Guofeng and held responsible for the Cultural Revolution. The Cultural Revolution
7191-471: The Eurofighter . Similarly, Chinese aerospace researchers also concluded that, in terms of stealth, the canard delta configuration is comparable with the conventional arrangement. Composite materials are applied to minimize the J-20's RCS. The DSI enables an aircraft to reach Mach 2.0 with a simpler intake than traditionally required, and improves stealth performance by eliminating radar reflections between
7344-682: The Great Leap Forward was largely responsible for the Great Chinese Famine that ended with millions of Chinese people having died, and the subsequent Cultural Revolution was a period of social turmoil and persecution characterized by Maoist populism. Following the Sino-Soviet split , the Shanghai Communiqué in 1972 would precipitate the normalization of relations with the United States . Economic reforms that began in 1978 moved
7497-507: The Jiahu symbols (7th millennium BCE) constituted the earliest Chinese writing system. According to traditional Chinese historiography , the Xia dynasty was established during the late 3rd millennium BCE, marking the beginning of the dynastic cycle that was understood to underpin China's entire political history. In the modern era, the Xia's historicity came under increasing scrutiny, in part due to
7650-618: The Kuomintang and the Communists led to the resumption of civil war. Constitutional rule was established in 1947, but because of the ongoing unrest, many provisions of the ROC constitution were never implemented in mainland China. Afterwards, the CCP took control of most of mainland China, and the ROC government retreated offshore to Taiwan . On 1 October 1949, CCP Chairman Mao Zedong formally proclaimed
7803-628: The Lockheed Martin F-35 Lightning II 's avionic suite, including the AN/AAQ-37 Distributed Aperture System . According to Chinese media in February 2024, the J-20 is equipped to perform airborne early warning and control (AEW&C) operations. The aircraft features a fully-digital glass cockpit with one primary large color liquid-crystal display (LCD) touchscreen , three smaller auxiliary displays, and
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#17328516048677956-549: The Northern Chinese Famine of 1876–1879 , in which between 9 and 13 million people died. The Guangxu Emperor drafted a reform plan in 1898 to establish a modern constitutional monarchy , but these plans were thwarted by the Empress Dowager Cixi . The ill-fated anti-foreign Boxer Rebellion of 1899–1901 further weakened the dynasty. Although Cixi sponsored a program of reforms known as the late Qing reforms ,
8109-602: The Palearctic and the Indomalayan . By one measure, China has over 34,687 species of animals and vascular plants, making it the third-most biodiverse country in the world, after Brazil and Colombia . The country is a party to the Convention on Biological Diversity ; its National Biodiversity Strategy and Action Plan was received by the convention in 2010. China is home to at least 551 species of mammals (the third-highest in
8262-566: The Paleolithic . By the late 2nd millennium BCE, the earliest dynastic states had emerged in the Yellow River basin. The 8th–3rd centuries BCE saw a breakdown in the authority of the Zhou dynasty , accompanied by the emergence of administrative and military techniques, literature , philosophy , and historiography . In 221 BCE, China was unified under an emperor , ushering in more than two millennia of imperial dynasties including
8415-548: The Qin , Han , Tang , Yuan , Ming , and Qing . With the invention of gunpowder and paper , the establishment of the Silk Road , and the building of the Great Wall , Chinese culture flourished and has heavily influenced both its neighbors and lands further afield. However, China began to cede parts of the country in the late 19th century to various European powers by a series of unequal treaties . After decades of Qing China on
8568-469: The State Council , China's cabinet, composed of four vice premiers, state councilors , and the heads of ministries and commissions. The Chinese People's Political Consultative Conference (CPPCC) is a political advisory body that is critical in China's " united front " system, which aims to gather non-CCP voices to support the CCP. Similar to the people's congresses, CPPCC's exist at various division, with
8721-497: The Turpan Depression . China's climate is mainly dominated by dry seasons and wet monsoons , which lead to pronounced temperature differences between winter and summer. In the winter, northern winds coming from high-latitude areas are cold and dry; in summer, southern winds from coastal areas at lower latitudes are warm and moist. A major environmental issue in China is the continued expansion of its deserts , particularly
8874-584: The U.S. Navy's Advanced Tactical Fighter (ATF) incorporated canards on a stealthy airframe. Lockheed Martin employed canards on a stealth airframe for the Joint Advanced Strike Technology (JAST) program during early development before dropping them due to complications with aircraft carrier recovery. McDonnell Douglas and NASA's X-36 featured canards and was considered to be extremely stealthy. RCS can be further reduced by controlling canard deflection through flight-control software, as on
9027-604: The World Trade Organization in 2001. At the 16th CCP National Congress in 2002, Hu Jintao succeeded Jiang as the general secretary. Under Hu, China maintained its high rate of economic growth, overtaking the United Kingdom, France, Germany and Japan to become the world's second-largest economy. However, the growth also severely impacted the country's resources and environment, and caused major social displacement. Xi Jinping succeeded Hu as paramount leader at
9180-692: The Xi , Mekong , Brahmaputra and Amur . To the west sit major mountain ranges, most notably the Himalayas. High plateaus feature among the more arid landscapes of the north, such as the Taklamakan and the Gobi Desert. The world's highest point, Mount Everest (8,848 m), lies on the Sino-Nepalese border. The country's lowest point, and the world's third-lowest, is the dried lake bed of Ayding Lake (−154 m) in
9333-536: The Xinhai Revolution of 1911–1912 ended the Qing dynasty and established the Republic of China . Puyi , the last Emperor, abdicated in 1912 . On 1 January 1912, the Republic of China was established, and Sun Yat-sen of the Kuomintang (KMT) was proclaimed provisional president. In March 1912, the presidency was given to Yuan Shikai , a former Qing general who in 1915 proclaimed himself Emperor of China . In
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#17328516048679486-564: The campaigns against Western Xia by Genghis Khan , who also invaded Jin territories . In 1271, the Mongol leader Kublai Khan established the Yuan dynasty , which conquered the last remnant of the Song dynasty in 1279. Before the Mongol invasion, the population of Song China was 120 million citizens; this was reduced to 60 million by the time of the census in 1300. A peasant named Zhu Yuanzhang overthrew
9639-534: The subtropical forests in the wetter south. The Himalaya , Karakoram , Pamir and Tian Shan mountain ranges separate China from much of South and Central Asia . The Yangtze and Yellow Rivers, the third- and sixth-longest in the world, respectively, run from the Tibetan Plateau to the densely populated eastern seaboard. China's coastline along the Pacific Ocean is 14,500 km (9,000 mi) long and
9792-440: The 1979 Environmental Protection Law are fairly stringent, though they are poorly enforced, frequently disregarded in favor of rapid economic development. China has the second-highest death toll because of air pollution, after India , with approximately 1 million deaths. Although China ranks as the highest CO 2 emitting country, it only emits 8 tons of CO 2 per capita , significantly lower than developed countries such as
9945-406: The 2010s. In 2020, the Chinese government announced its aims for the country to reach its peak emissions levels before 2030, and achieve carbon neutrality by 2060 in line with the Paris Agreement , which, according to Climate Action Tracker , would lower the expected rise in global temperature by 0.2–0.3 degrees – "the biggest single reduction ever estimated by the Climate Action Tracker". China
10098-568: The AL-31 would be fitted with the WS-15. In April 2023, China reported that the WS-15 was ready for mass production. The aircraft is equipped with a retractable refueling probe embedded on the right side of the cockpit, to help the fighter to maintain stealth while flying greater distances. Analysts noted that the J-20's airframe employs a holistic approach to reduce its Radar cross-section (RCS), uniquely combining canard wings with leading edge root extensions (LERX). The chined forebody, modified radar radome , and electroconductive canopy use
10251-416: The British under the 1842 Treaty of Nanking , the first of what have been termed as the " unequal treaties ". The First Sino-Japanese War (1894–1895) resulted in Qing China's loss of influence in the Korean Peninsula , as well as the cession of Taiwan to Japan . The Qing dynasty also began experiencing internal unrest in which tens of millions of people died, especially in the White Lotus Rebellion ,
10404-400: The CCP. The NPC is dominated by the CCP, with another eight minor parties having nominal representation under the condition of upholding CCP leadership. The president is elected by the NPC. The presidency is the ceremonial state representative, but not the constitutional head of state. The incumbent president is Xi Jinping, who is also the general secretary of the CCP and the chairman of
10557-413: The Central Military Commission , making him China's paramount leader and supreme commander of the Armed Forces. The premier is the head of government , with Li Qiang being the incumbent. The premier is officially nominated by the president and then elected by the NPC, and has generally been either the second- or third-ranking member of the Politburo Standing Committee (PSC). The premier presides over
10710-442: The Chengdu Aircraft Design Institute (CADI) facilities before the maiden flight. On 11 January 2011, the first J-20 prototype (numbered "2001") made its first flight, lasting about 15 minutes, with a Chengdu J-10B serving as the chase aircraft . After the successful flight, a ceremony was held, attended by the pilot, Li Gang, Chief Designer Yang Wei and General Li Andong, Deputy-Director of General Armaments. On 17 April 2011,
10863-450: The Gobi Desert. Although barrier tree lines planted since the 1970s have reduced the frequency of sandstorms , prolonged drought and poor agricultural practices have resulted in dust storms plaguing northern China each spring, which then spread to other parts of East Asia, including Japan and Korea. Water quality, erosion , and pollution control have become important issues in China's relations with other countries. Melting glaciers in
11016-714: The Himalayas could potentially lead to water shortages for hundreds of millions of people. According to academics, in order to limit climate change in China to 1.5 °C (2.7 °F) electricity generation from coal in China without carbon capture must be phased out by 2045. With current policies, the GHG emissions of China will probably peak in 2025, and by 2030 they will return to 2022 levels. However, such pathway still leads to three-degree temperature rise. Official government statistics about Chinese agricultural productivity are considered unreliable, due to exaggeration of production at subsidiary government levels. Much of China has
11169-481: The J-20 is high instability . This requires sustained pitch authority at a high angle of attack, in which a conventional tail-plane would lose effectiveness due to stalling . On the other hand, a canard can deflect opposite to the angle of attack, avoiding stall and thereby maintaining control. A canard design is also known to provide good supersonic performance, excellent supersonic and transonic turn performance, and improved short-field landing performance compared to
11322-448: The J-20 more thrust than the F-22 and F-35. The engine's extra power and cooling could also be used by future directed energy weapons and sensors. The WS-15 development was reportedly ongoing in 2019. In March 2022, Chinese state media reported that the J-20 had performed flight trials with the engine and experienced significantly improved performance. It was also reported that eventually, new production and existing aircraft powered by
11475-495: The J-20 platform were being developed. In January 2019, Chinese media reported that a twin-seat variant of the J-20 is rumored to be in development for use in tactical bombing , electronic warfare and carrier strike roles. In November 2019, a J-20 painted in yellow primer coating was spotted during its flight testing by defense observers at the Chengdu Aerospace Corporation manufacturing facility. The aircraft
11628-485: The J-20 prototype "2052" equipped with two distinguishable WS-15 engines took flight in Chengdu, captured by Chinese military enthusiasts and spread throughout social media. Another prototype with serial number "2053" also reportedly conducted a test flight in the same period with WS-15 engines. Despite the lack of clear pictures, circumstantial evidence such as a photo of the engine installation ceremony, lack of censorship by
11781-449: The J-20 with radar reflectors during peacetime for safety and training purposes due to the potential for accidents and identification from other aircraft or ground installations. In a more recent report, Bronk also states that even with limited stealth, J-20 could hide and strike enemy critical platforms in an airspace with background clutter caused by non-stealth fighters and other electromagnetic noise. According to Aviation Week in 2021,
11934-503: The J-20's stealth characteristics were superior to the Sukhoi Su-57 in the frontal aspect but inferior overall - particularly in the rear - to the F-35 . As the program matures with each batch, recently produced models have seen constant and significant enhancement in their stealth profile. On 10 December 2010, the first J-20 prototype was observed undertaking high-speed taxiing tests around
12087-732: The Kuomintang and the CCP. Japanese forces committed numerous war atrocities against the civilian population; as many as 20 million Chinese civilians died. An estimated 40,000 to 300,000 Chinese were massacred in Nanjing alone during the Japanese occupation. China, along with the UK, the United States, and the Soviet Union , were recognized as the Allied " Big Four " in the Declaration by United Nations . Along with
12240-580: The PRC initially allied closely with the Soviet Union , the relations between the two communist nations gradually deteriorated , leading China to develop an independent industrial system and its own nuclear weapons . The Chinese population increased from 550 million in 1950 to 900 million in 1974. However, the Great Leap Forward , an idealistic massive industrialization project, resulted in an estimated 15 to 55 million deaths between 1959 and 1961, mostly from starvation. In 1964, China detonated its first atomic bomb. In 1966, Mao and his allies launched
12393-793: The Pentagon reported that PLAAF was upgrading the J-20, with enhancements such as extended weapon-carrying capability, thrust vectoring nozzles, control systems for unmanned aircraft teaming, and WS-15 high-thrust engines. In November 2024, the Aviation Industry Corporation of China (AVIC) officially announced the twin-seat variant of the J-20, designated the J-20S. Functions of the variant include long-range operations with multi-role capabilities, including air superiority, precision strikes, manned-unmanned teaming, battlefield surveillance , electronic warfare , and command and control . The J-20 has
12546-947: The People program for transforming China into a modern democratic state. The Kuomintang briefly allied with the Chinese Communist Party (CCP) during the Northern Expedition, though the alliance broke down in 1927 after Chiang violently suppressed the CCP and other leftists in Shanghai, marking the beginning of the Chinese Civil War . The CCP declared areas of the country as the Chinese Soviet Republic (Jiangxi Soviet) in November 1931 in Ruijin , Jiangxi . The Jiangxi Soviet
12699-526: The People's Republic of China in Tiananmen Square , Beijing . In 1950, the PRC captured Hainan from the ROC and annexed Tibet . However, remaining Kuomintang forces continued to wage an insurgency in western China throughout the 1950s. The CCP consolidated its popularity among the peasants through the Land Reform Movement , which included the state-tolerated executions of between 1 and 2 million landlords by peasants and former tenants. Though
12852-525: The Russian AL-31 or Chinese Shenyang WS-10 turbofan engines. By 2020, the J-20 is scheduled to use the 18–19 ton WS-15 engine, enabling the jet to supercruise without using afterburners. The trapezoidal flight booms around the engines were further enlarged, possibly to accommodate rearwards-facing radars, electronic countermeasures, and jamming equipment. The fuselage was extended to the engine's exhaust nozzles. Compared to its "2014" and "2015" predecessors,
13005-899: The UN representative for China was changed from the ROC to the PRC in 1971. It is a founding member of several multilateral and regional organizations such as the AIIB , the Silk Road Fund , the New Development Bank , and the RCEP . It is a member of the BRICS , the G20 , APEC , the SCO , and the East Asia Summit . Making up around one-fifth of the world economy, the Chinese economy is
13158-495: The US military reported that the J-20 was gradually receiving upgrades. In the same month, new J-20 two-seater variant began flight testing. In December 2022, the prototype "2051" in yellow premier coat took flight. The new prototype had a redesigned canopy section and was speculated for engine and thrust-vectoring testing In March 2023, J-20 fitted with one Shenyang WS-15 engine reportedly performed experimental flights. On 29 June 2023,
13311-483: The United States (16.1), Australia (16.8) and South Korea (13.6). Greenhouse gas emissions by China are the world's largest . The country has significant water pollution problems; only 89.4% of China's national surface water was graded suitable for human consumption by the Ministry of Ecology and Environment in 2023. China has prioritized clamping down on pollution, bringing a significant decrease in air pollution in
13464-506: The WS-10C were underway by November 2020. The PLAAF began receiving WS-10C powered aircraft by 2021. In January 2022, it was reported that aircraft powered by the WS-10C would be upgraded with TVC. Erportedly, the WS-10C enabled supercruise . The intended powerplant is the Shenyang WS-15 with a thrust of 180 kN. The WS-15 enables supercruise , enhances maneuverability, and gives
13617-480: The WS-10C. The WS-10C is considered an interim solution before Shenyang WS-15 passes evaluations. Moreover, WS-10C will not be equipped with the thrust-vectoring version of the J-20 that entered mass production in 2019, which still required further testing. Overall, Chinese engineers believe WS-10C is comparable with AL-31F in performance, and the replacement would also reduce China's dependency on Russian engines. The WS-10C-powered J-20 has officially showcased to
13770-410: The WS-15 was undertaking the last stage of testing and development. In late December, a prototype of the new J-20 variant was observed at Chengdu Aerospace Corporation facilities. The new variant was painted in yellow primer and different from previous J-20 aircraft in airframe design, with a low-profile blended canopy, aiming to optimize transonic flight performance and maneuverability. The new prototype
13923-473: The WS-15, and the engine approached the final stage of testing before serial production. Analyst Rick Joe speculated the initial production batch of the revised J-20 model might enter service with WS-10 or WS-15 engine, depending on the circumstances surrounding the development. In late December 2015, a new J-20 numbered 2101 was spotted; it is believed to be the LRIP version of the aircraft. Chinese media suggested
14076-656: The Yuan in 1368 and founded the Ming dynasty as the Hongwu Emperor . Under the Ming dynasty, China enjoyed another golden age, developing one of the strongest navies in the world and a rich and prosperous economy amid a flourishing of art and culture. It was during this period that admiral Zheng He led the Ming treasure voyages throughout the Indian Ocean, reaching as far as East Africa. In
14229-610: The adoption of the AL-31. There are conflicting reports concerning the powerplant of the TVC-equipped J-20, dubbed J-20B. The powerplant has been identified as the AL-31FM2, or a variant of the WS-10; "WS-10C" by Andreas Rupprecht, or "WS-10B-3" by Jamie Hunter. The TVC-equipped WS-10B-3 was demonstrated at the 2018 China International Aviation & Aerospace Exhibition. The Shenyang WS-10C
14382-430: The adoption of the more powerful Shenyang WS-15 . During the prototype and initial service period, the fighter was powered by an improved Lyulka-Saturn AL-31 variant, reportedly the AL-31FM2 developed by Salyut. The engine has a "special power setting" thrust of 145 kN (32,600 lbf). The Shenyang WS-10B reportedly powered low rate initial production aircraft in 2015, and was used as an interim engine before
14535-490: The aircraft's turn performance. The use of a bubble canopy, extensive flight-control surfaces, and canard configuration for angle-of-attack control indicates J-20's intention to operate in air-superiority missions and within-visual-range engagements. Chief test pilot Li Gang describes the J-20 as having comparable manoeuvrability to the Chengdu J-10 while being significantly better at low-observable (LO) performance. The J-20
14688-502: The aircraft-teaming capable twin-seat variant. Descending from the J-XX program of the 1990s, the aircraft made its maiden flight on 11 January 2011, and was officially revealed at the 2016 China International Aviation & Aerospace Exhibition . The aircraft entered service in March 2017 with the first J-20 combat unit formed in February 2018, making China the second country in the world and
14841-528: The aircraft. In December 2015, the low rate initial production (LRIP) version of the J-20 was spotted by military observers. The LRIP aircraft revealed dielectric surfaces that were previously painted for prototypes, potentially containing various sensors or baked-in radar absorbing materials. In October 2017, Chinese state media reported that the designs of the J-20 had been finalized, and were ready for mass production as well as being combat-ready. In March 2018, Chinese military revealed other versions of
14994-472: The authorities, and modified airframe suggested the WS-15 was evidently mounted, though Janes Information Services noted the engines on trial apparently lacks the thrust vectoring control (TVC) paddles, which could be added later. According to editor of Beijing-based Aerospace Knowledge magazine, vector thrust control and variable cycle engines were "likely under development". In 2024, clear photo evidence confirmed that J-20 prototypes took flight with
15147-573: The base of the vertical tails, embedded antennas, and radar-absorbent coating materials. While the aircraft's fins/strakes and axisymmetric rear areas may expose the aircraft to radar, the overall stealth shaping of the J-20 is robust and considerably more capable than the Russian PAK-FA . Improvements regarding stealth were subsequently introduced - one prototype in 2014 was powered by WS-10 engines equipped with different jagged-edge nozzles and tiles for greater stealth. The J-20 production model with
15300-801: The bulk of East Asia, bordering Vietnam , Laos , and Myanmar in Southeast Asia; India , Bhutan , Nepal , Pakistan and Afghanistan in South Asia; Tajikistan , Kyrgyzstan and Kazakhstan in Central Asia; and Russia, Mongolia , and North Korea in Inner Asia and Northeast Asia . It is narrowly separated from Bangladesh and Thailand to the southwest and south, and has several maritime neighbors such as Japan , Philippines , Malaysia , and Indonesia . China has resolved its land borders with 12 out of 14 neighboring countries, having pursued substantial compromises in most of them. China currently has
15453-495: The conventional delta-wing design. Leading edge extensions and body lift are incorporated to enhance performance in a canard layout. This combination is said by the designer to generate 1.2 times the lift of an ordinary canard delta, and 1.8 times more lift than an equivalent-sized pure delta configuration. The designer claims such a combination allows the use of a smaller wing, reducing supersonic drag without compromising transonic lift-to-drag characteristics that are crucial to
15606-483: The country away from a socialist planned economy towards an increasingly capitalist market economy , spurring significant economic growth. The corresponding movement for increased democracy and liberalization stalled after the Tiananmen Square protests and massacre in 1989. China is a unitary one-party socialist republic led by the CCP. It is one of the five permanent members of the UN Security Council ;
15759-499: The decline, the 1911 Revolution overthrew the Qing dynasty and the monarchy and the Republic of China (ROC) was established the following year. The country under the nascent Beiyang government was unstable and ultimately fragmented during the Warlord Era , which was ended upon the Northern Expedition conducted by the Kuomintang (KMT) to reunify the country. The Chinese Civil War began in 1927, when KMT forces purged members of
15912-503: The diverter and the aircraft's skin. Analysts have also noted that the J-20 DSI reduces the need for the application of radar-absorbent materials . A removable radar reflectors ( Luneburg lens ) is mounted on the underside of the J-20 to amplify its radar returns, concealing the real radar signature. In the 2021 production model, the emitter is re-engineered to be retractable. In May 2018, Indian Air Chief Marshal B.S. Dhanoa claimed at
16065-599: The earlier path over the Himalayas to India. Han China gradually became the largest economy of the ancient world. Despite the Han's initial decentralization and the official abandonment of the Qin philosophy of Legalism in favor of Confucianism , Qin's legalist institutions and policies continued to be employed by the Han government and its successors. After the end of the Han dynasty , a period of strife known as Three Kingdoms followed, at
16218-436: The earliest for which there are both contemporary written records and undisputed archaeological evidence. The Shang ruled much of the Yellow River valley until the 11th century BCE, with the earliest hard evidence dated c. 1300 BCE . The oracle bone script , attested from c. 1250 BCE but generally assumed to be considerably older, represents the oldest known form of written Chinese , and
16371-450: The earliest known attestation of the Xia being written millennia after the date given for their collapse. In 1958, archaeologists discovered sites belonging to the Erlitou culture that existed during the early Bronze Age ; they have since been characterized as the remains of the historical Xia, but this conception is often rejected. The Shang dynasty that traditionally succeeded the Xia is
16524-537: The early Ming dynasty, China's capital was moved from Nanjing to Beijing. With the budding of capitalism, philosophers such as Wang Yangming critiqued and expanded Neo-Confucianism with concepts of individualism and equality of four occupations . The scholar-official stratum became a supporting force of industry and commerce in the tax boycott movements, which, together with the famines and defense against Japanese invasions of Korea (1592–1598) and Later Jin incursions led to an exhausted treasury. In 1644, Beijing
16677-704: The east, along the shores of the Yellow Sea and the East China Sea, there are extensive and densely populated alluvial plains , while on the edges of the Inner Mongolian plateau in the north, broad grasslands predominate. Southern China is dominated by hills and low mountain ranges, while the central-east hosts the deltas of China's two major rivers, the Yellow River and the Yangtze River. Other major rivers include
16830-633: The end of which Wei was swiftly overthrown by the Jin dynasty . The Jin fell to civil war upon the ascension of a developmentally disabled emperor ; the Five Barbarians then rebelled and ruled northern China as the Sixteen States . The Xianbei unified them as the Northern Wei , whose Emperor Xiaowen reversed his predecessors' apartheid policies and enforced a drastic sinification on his subjects . In
16983-404: The engine's surface area is further embedded inside the stealthy coating, providing greater rear-facing stealth against enemy detection. On 24 November 2015, a new J-20 prototype, numbered "2017", took to the sky. The most significant change in the new prototype was the reshaped cockpit canopy, which provides the pilot with greater visibility. The lack of other design changes suggested that "2017"
17136-468: The face of popular condemnation and opposition from his own Beiyang Army , he was forced to abdicate and re-establish the republic in 1916. After Yuan Shikai's death in 1916, China was politically fragmented. Its Beijing-based government was internationally recognized but virtually powerless; regional warlords controlled most of its territory. During this period , China participated in World War I and saw
17289-537: The failed Taiping Rebellion that ravaged southern China in the 1850s and 1860s and the Dungan Revolt (1862–1877) in the northwest. The initial success of the Self-Strengthening Movement of the 1860s was frustrated by a series of military defeats in the 1880s and 1890s. In the 19th century, the great Chinese diaspora began. Losses due to emigration were added to by conflicts and catastrophes such as
17442-641: The ferrying range and large weapons, like the PL-17 . The J-20 is unlikely to be the primary carrier of such large weapons as they compromise the aircraft's stealth. The J-20 reportedly lacks an internal autocannon or rotary cannon , suggesting a preference for long-range engagements with missiles rather than short-ranged dogfights . The J-20 is powered by Shenyang WS-10 , an afterburner turbofan engine manufactured by Shenyang Liming Aircraft Engine Company , which reportedly enables supercruise and high maneuverability . The WS-10C served as an interim engine before
17595-533: The fighter entered service. But it still faced a series of technical challenges that needed to be tackled, including the reliability of its WS-15 engines, the aircraft's flight control system, stealth coatings, hull materials, and infrared sensor. In September 2017, a newly built J-20 prototype (numbered "2021") was flight testing with Chinese-made WS-10 Taihang engines, featuring sawtoothed serration edge on its afterburning nozzles. The J-20 with indigenous WS-10C engines began production in 2019. In September 2018, it
17748-589: The first in Asia to field an operational stealth aircraft. The J-20 emerged from the late-1990s J-XX program. In 2008, the PLAAF endorsed Chengdu Aerospace Corporation 's proposal, Project 718. Chengdu had previously used the double-canard configuration in the J-9 , its first design and cancelled in the 1970s, and the J-10 . In 2009, a senior PLAAF official revealed that the first flight
17901-557: The growth of Buddhism during the Tang, and a flourishing of philosophy and the arts, as landscape art and porcelain were brought to new levels of complexity. However, the military weakness of the Song army was observed by the Jin dynasty . In 1127, Emperor Huizong of Song and the capital Bianjing were captured during the Jin–Song wars . The remnants of the Song retreated to southern China . The Mongol conquest of China began in 1205 with
18054-544: The inauguration of Donald Trump in January 2017 Elongated pentagonal cupola , a Johnson solid (J 20 ) January 20, 2005 counter-inaugural protest , held in Washington, D.C. and other American cities Nissan J20 , an automobile engine See also [ edit ] J 2 O , with a letter "O" instead of a zero [REDACTED] Topics referred to by the same term This disambiguation page lists articles associated with
18207-400: The informal paramount leader . The current general secretary is Xi Jinping , who took office on 15 November 2012. At the local level, the secretary of the CCP committee of a subdivision outranks the local government level; CCP committee secretary of a provincial division outranks the governor while the CCP committee secretary of a city outranks the mayor. The government in China is under
18360-409: The largest importer of Russian crude oil in 2022. China is the third-largest country in the world by land area after Russia , and the third- or fourth-largest country in the world by total area. China's total area is generally stated as being approximately 9,600,000 km (3,700,000 sq mi). Specific area figures range from 9,572,900 km (3,696,100 sq mi) according to
18513-691: The multiple consultation mechanisms that exist in Chinese government. According to the CCP constitution , its highest body is the National Congress held every five years. The National Congress elects the Central Committee , who then elects the party's Politburo , Politburo Standing Committee and the general secretary ( party leader ), the top leadership of the country. The general secretary holds ultimate power and authority over party and state and serves as
18666-468: The other three great powers, China was one of the four major Allies of World War II , and was later considered one of the primary victors in the war. After the surrender of Japan in 1945, Taiwan, including the Penghu , was handed over to Chinese control ; however, the validity of this handover is controversial. China emerged victorious but war-ravaged and financially drained. The continued distrust between
18819-537: The press , freedom of assembly , free formation of social organizations , freedom of religion and free access to the Internet . China has consistently been ranked amongst the lowest as an "authoritarian regime" by the Economist Intelligence Unit 's Democracy Index , ranking at 148th out of 167 countries in 2023. Other sources suggest that terming China as "authoritarian" does not sufficiently account for
18972-417: The protests and was replaced by Jiang Zemin . Jiang continued economic reforms, closing many SOEs and trimming down " iron rice bowl " (life-tenure positions). China's economy grew sevenfold during this time. British Hong Kong and Portuguese Macau returned to China in 1997 and 1999 , respectively, as special administrative regions under the principle of one country, two systems . The country joined
19125-535: The prototype with open compartment doors and a modified pitot tube emerged, suggesting the possible inclusion of radar or sensors. In March 2013, images of the side weapon bays appeared, displaying a missile launch rail. On 16 January 2014, the third J-20 prototype was revealed, showing new intakes, embedded engine nozzles, and stealth coating, as well as redesigned vertical stabilizers, and an Electro-Optical Targeting System . This particular aircraft, numbered "2011", performed its maiden flight on 1 March 2014 and
19278-411: The public on 28 September 2021 at Zhuhai Airshow. The development of a twin-seater variant was hinted at by J-20's chief designer in 2019. In January 2021, Aviation Industry Corporation of China released computer renderings of the twin-seat variant of the J-20 fighter in celebration of the 10th anniversary of the jet's maiden flight. In February 2021, a South China Morning Post infographic depicted
19431-623: The rival Chinese Communist Party (CCP), who proceeded to engage in sporadic fighting against the KMT-led Nationalist government . Following the country's invasion by the Empire of Japan in 1937, the CCP and KMT formed the Second United Front to fight the Japanese. The Second Sino-Japanese War eventually ended in a Chinese victory; however, the CCP and the KMT resumed their civil war as soon as
19584-690: The same title formed as a letter–number combination. If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=J20&oldid=1188727066 " Category : Letter–number combination disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages Chengdu J-20 The Chengdu J-20 ( Chinese : 歼-20 ; pinyin : Jiān-Èrlíng ), also known as Mighty Dragon ( Chinese : 威龙 ; pinyin : Wēilóng , NATO reporting name : Fagin ),
19737-447: The serrated WS-10C engine is also capable of mitigating negative effects on rear-aspect stealth. Others have raised doubts about the use of canards on a low-observable design, stating that canards would guarantee radar detection and compromise stealth. However, these critiques with respect to the canard's RCS may be unfounded. Canards and low-observability are not necessarily mutually exclusive designs. Northrop Grumman's proposal for
19890-627: The sole control of the CCP. The CCP controls appointments in government bodies, with most senior government officials being CCP members. The National People's Congress (NPC), with nearly 3,000-members, is constitutionally the " highest organ of state power ", though it has been also described as a " rubber stamp " body. The NPC meets annually, while the NPC Standing Committee , around 150 members elected from NPC delegates, meets every couple of months. Elections are indirect and not pluralistic, with nominations at all levels being controlled by
20043-739: The south, the general Liu Yu secured the abdication of the Jin in favor of the Liu Song . The various successors of these states became known as the Northern and Southern dynasties , with the two areas finally reunited by the Sui in 581. The Sui restored the Han to power through China, reformed its agriculture, economy and imperial examination system, constructed the Grand Canal , and patronized Buddhism . However, they fell quickly when their conscription for public works and
20196-443: The standardization of Chinese characters, measurements , road widths, and currency . His dynasty also conquered the Yue tribes in Guangxi , Guangdong , and Northern Vietnam . The Qin dynasty lasted only fifteen years, falling soon after the First Emperor's death. Following widespread revolts during which the imperial library was burned , the Han dynasty emerged to rule China between 206 BCE and 220 CE, creating
20349-406: The stealth aircraft will enter production ahead of schedule. In July 2016, pre-production models with dark-grey paint and low visibility insignias were spotted inside a Chengdu Aerospace Corporation (CAC) facility. The production rate indicated an intended initial operational capability (IOC) date of around 2017–2018. China China , officially the People's Republic of China ( PRC ),
20502-589: The third J-20 prototype, numbered "2011", which made its maiden flight in March 2014. The new prototype showed increasing sophistication in design, including numerous subtle changes from the first two prototypes. The new airframe introduced modified diverterless supersonic inlet (DSI) intakes, stealth coating, streamlined underwing fairings, and redesigned vertical stabilizers. Analysts noted new equipment and devices for multi-role operations, such as integrated targeting pods for precision-guided munition, and six additional passive infrared sensors can also be spotted around
20655-458: The time of the Warring States period of the 5th–3rd centuries BCE, there were seven major powerful states left. The Warring States period ended in 221 BCE after the state of Qin conquered the other six states, reunited China and established the dominant order of autocracy . King Zheng of Qin proclaimed himself the Emperor of the Qin dynasty , becoming the first emperor of a unified China. He enacted Qin's legalist reforms, notably
20808-416: The type of radar that J-20s use has not yet been released publicly. Some analysts believed that J-20s used Type 1475 (KLJ-5) active electronically scanned array (AESA) radar with 1856 transmit/receive modules, but more recent information revealed that this radar was designed for upgraded versions of the J-11D. Other analysts point out that, based on the nose cross-section of the J-20 and known data about
20961-424: The war ended. In 1949, the resurgent Communists established control over most of the country, proclaiming the People's Republic of China and forcing the Nationalist government to retreat to the island of Taiwan . The country was split, with both sides claiming to be the sole legitimate government of China . Following the implementation of land reforms , further attempts by the PRC to realize communism failed:
21114-399: The world's largest economy by PPP-adjusted GDP , the second-largest economy by nominal GDP , and the second-wealthiest country , albeit ranking poorly in measures of democracy , human rights and religious freedom . The country has been one of the fastest-growing major economies and is the world's largest manufacturer and exporter , as well as the second-largest importer . China is
21267-485: The world), 1,221 species of birds (eighth), 424 species of reptiles (seventh) and 333 species of amphibians (seventh). Wildlife in China shares habitat with, and bears acute pressure from, one of the world's largest population of humans. At least 840 animal species are threatened, vulnerable or in danger of local extinction , due mainly to human activity such as habitat destruction, pollution and poaching for food, fur and traditional Chinese medicine . Endangered wildlife
21420-428: The world), 13.2% from hydroelectric power (largest), 9.4% from wind (largest), 6.2% from solar energy (largest), 4.6% from nuclear energy (second-largest), 3.3% from natural gas (fifth-largest), and 2.2% from bioenergy (largest); in total, 31% of China's energy came from renewable energy sources. Despite its emphasis on renewables, China remains deeply connected to global oil markets and next to India, has been
21573-453: Was wiped out by the KMT armies in 1934, leading the CCP to initiate the Long March and relocate to Yan'an in Shaanxi . It would be the base of the communists before major combat in the Chinese Civil War ended in 1949. In 1931, Japan invaded and occupied Manchuria . Japan invaded other parts of China in 1937, precipitating the Second Sino-Japanese War (1937–1945), a theater of World War II . The war forced an uneasy alliance between
21726-406: Was captured by a coalition of peasant rebel forces led by Li Zicheng . The Chongzhen Emperor committed suicide when the city fell. The Manchu Qing dynasty , then allied with Ming dynasty general Wu Sangui , overthrew Li's short-lived Shun dynasty and subsequently seized control of Beijing, which became the new capital of the Qing dynasty. The Qing dynasty, which lasted from 1644 until 1912,
21879-417: Was devastated and weakened by the An Lushan rebellion in the 8th century. In 907, the Tang disintegrated completely when the local military governors became ungovernable. The Song dynasty ended the separatist situation in 960, leading to a balance of power between the Song and the Liao dynasty . The Song was the first government in world history to issue paper money and the first Chinese polity to establish
22032-442: Was expected in 2010–11, with a service entry date by 2019. On 22 December 2010, the first J-20 prototype underwent high speed taxiing tests outside the Chengdu Aircraft Design Institute (CADI). Three months later, the first J-20 prototype made its maiden flight in Chengdu . The first prototype was painted with the number "2001". In May 2012, the second prototype took flight in the CADI facility. Several changes were made to
22185-414: Was first used in early Hindu scripture, including the Mahabharata (5th century BCE) and the Laws of Manu (2nd century BCE). In 1655, Martino Martini suggested that the word China is derived ultimately from the name of the Qin dynasty (221–206 BCE). Although use in Indian sources precedes this dynasty, this derivation is still given in various sources. The origin of the Sanskrit word
22338-448: Was not used by the Chinese themselves during this period. Its origin has been traced through Portuguese , Malay , and Persian back to the Sanskrit word Cīna , used in ancient India . "China" appears in Richard Eden 's 1555 translation of the 1516 journal of the Portuguese explorer Duarte Barbosa . Barbosa's usage was derived from Persian Chīn ( چین ), which in turn derived from Sanskrit Cīna ( चीन ). Cīna
22491-408: Was rebuked, with millions rehabilitated. Deng Xiaoping took power in 1978, and instituted large-scale political and economic reforms , together with the " Eight Elders ", most senior and influential members of the party. The government loosened its control and the communes were gradually disbanded. Agricultural collectivization was dismantled and farmlands privatized. While foreign trade became
22644-429: Was reported that issues with the development of the WS-15 engine, particularly the reliability of the turbine blades overheating at top speeds were fixed. The WS-15 reportedly required further development after failing final verification testing at the end of 2019. The COVID-19 pandemic imposed further delays. In March 2022, Chinese state media reported that the WS-15 engine completed final testing. In November 2021,
22797-425: Was selected as the replacement for AL-31 due to delays on the testing and production of the WS-15 engine. Aircraft powered by WS-10Cs were flying by September 2019. The engine has a thrust of 142-147 kN, a thrust-to-weight ratio of 9.5, providing necessary propulsion for J-20 to supercruise , and is fitted with serrated afterburner nozzles for enhanced rear-aspect stealth. Flights with prototypes powered by
22950-579: Was speculated to be used to test the WS-15 engine and thrust-vectoring. In March 2023, the executive of Aero Engine Corporation of China (AECC) announced the serial production of the WS-15 has started. FlightGlobal speculated that small-scale production and in-flight testing with the J-20 fighter was underway. On 29 June 2023, a J-20 fighter in yellow primer was observed taking off from Chengdu Aircraft Cooperation airfield fitted with reportedly two WS-15 engines. Clear photo of WS-15 equipped J-20A fighter taking flight appeared in 2024. In October 2023,
23103-492: Was strengthened in part to suppress anti-Qing sentiment with the policy of valuing agriculture and restraining commerce, like the Haijin during the early Qing period and ideological control as represented by the literary inquisition , causing some social and technological stagnation. In the mid-19th century, the Opium Wars with Britain and France forced China to pay compensation, open treaty ports, allow extraterritoriality for foreign nationals, and cede Hong Kong to
23256-422: Was the last imperial dynasty of China. The Ming-Qing transition (1618–1683) cost 25 million lives, but the Qing appeared to have restored China's imperial power and inaugurated another flowering of the arts. After the Southern Ming ended, the further conquest of the Dzungar Khanate added Mongolia, Tibet and Xinjiang to the empire. Meanwhile, China's population growth resumed and shortly began to accelerate. It
23409-403: Was to be equipped with thrust vectoring control. Conflicting reports emerged regarding the exact engine type. Analyst Andreas Rupprecht expressed skepticism regarding the use of Russian engines on the J-20, as he believes that the J-20 is using a variant of the WS-10, which he called the WS-10C. This engine has improved thrust, stealthier serrated afterburner nozzles, and higher reliability, but it
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