Misplaced Pages

#595404

62-561: In 1970, the Mitsubishi Group established the Mitsubishi Foundation to commemorate the centennial anniversary of the founding of the first Mitsubishi company. That foundation donates large sums of money annually to support scientific research and public-interest activities. This article about an aspect of Japanese education is a stub . You can help Misplaced Pages by expanding it . This article about an education organization

124-404: A combustion chamber , and accelerate the exhaust rearwards to provide thrust. Different jet engine configurations include the turbojet and turbofan , sometimes with the addition of an afterburner . Those with no rotating turbomachinery include the pulsejet and ramjet . These mechanically simple engines produce no thrust when stationary, so the aircraft must be launched to flying speed using

186-433: A lifting gas such as helium , hydrogen or hot air , which is less dense than the surrounding air. When the weight of the lifting gas is added to the weight of the aircraft itself, it is same or less than the mass of the air that the craft displaces. Small hot-air balloons, called sky lanterns , were first invented in ancient China prior to the 3rd century BC and used primarily in cultural celebrations, and were only

248-452: A business district. Hisaya was succeeded by his cousin Koyata in 1916, and during his time as president the group saw a significant expansion. In 1917, he funded the establishment of an optics company and became the majority shareholder, which later became Nikon . During this era, Mitsubishi Heavy Industries was at the forefront of Japan's aircraft development. He reorganised the group into

310-557: A catapult, like the V-1 flying bomb , or a rocket, for example. Other engine types include the motorjet and the dual-cycle Pratt & Whitney J58 . Compared to engines using propellers, jet engines can provide much higher thrust, higher speeds and, above about 40,000 ft (12,000 m), greater efficiency. They are also much more fuel-efficient than rockets . As a consequence nearly all large, high-speed or high-altitude aircraft use jet engines. Some rotorcraft, such as helicopters , have

372-458: A form similar to what it is now, and he spun off each department into a subsidiary. Most of them later went public, as he thought that for the sake of the expansion of business, more core capital was needed. The group was organised as follows: The firm's prime real estate holdings in the Marunouchi district of Tokyo, acquired in 1890, were spun off in 1937 to form Mitsubishi Estate , now one of

434-617: A greater wingspan (94m/260 ft) than any current aircraft and a tail height equal to the tallest (Airbus A380-800 at 24.1m/78 ft) — flew only one short hop in the late 1940s and never flew out of ground effect . The largest civilian airplanes, apart from the above-noted An-225 and An-124, are the Airbus Beluga cargo transport derivative of the Airbus A300 jet airliner, the Boeing Dreamlifter cargo transport derivative of

496-670: A marginal case. The forerunner of the fixed-wing aircraft is the kite . Whereas a fixed-wing aircraft relies on its forward speed to create airflow over the wings, a kite is tethered to the ground and relies on the wind blowing over its wings to provide lift. Kites were the first kind of aircraft to fly and were invented in China around 500 BC. Much aerodynamic research was done with kites before test aircraft, wind tunnels , and computer modelling programs became available. The first heavier-than-air craft capable of controlled free-flight were gliders . A glider designed by George Cayley carried out

558-772: A maximum loaded weight of 550–700 t (1,210,000–1,540,000 lb), it was also the heaviest aircraft built to date. It could cruise at 500 mph (800 km/h; 430 kn). The aircraft was destroyed during the Russo-Ukrainian War . The largest military airplanes are the Ukrainian Antonov An-124 Ruslan (world's second-largest airplane, also used as a civilian transport), and American Lockheed C-5 Galaxy transport, weighing, loaded, over 380 t (840,000 lb). The 8-engine, piston/propeller Hughes H-4 Hercules "Spruce Goose" — an American World War II wooden flying boat transport with

620-560: A payload of up to 22,050 lb (10,000 kg). The largest aircraft by weight and largest regular fixed-wing aircraft ever built, as of 2016 , was the Antonov An-225 Mriya . That Soviet-built ( Ukrainian SSR ) six-engine transport of the 1980s was 84 m (276 ft) long, with an 88 m (289 ft) wingspan. It holds the world payload record, after transporting 428,834 lb (194,516 kg) of goods, and has flown 100 t (220,000 lb) loads commercially. With

682-583: A powered "tug" aircraft. For a glider to maintain its forward air speed and lift, it must descend in relation to the air (but not necessarily in relation to the ground). Many gliders can "soar", i.e. , gain height from updrafts such as thermal currents. The first practical, controllable example was designed and built by the British scientist and pioneer George Cayley , whom many recognise as the first aeronautical engineer. Common examples of gliders are sailplanes , hang gliders and paragliders . Balloons drift with

SECTION 10

#1732852500596

744-491: A powered rotary wing or rotor , where the rotor disc can be angled slightly forward so that a proportion of its lift is directed forwards. The rotor may, like a propeller, be powered by a variety of methods such as a piston engine or turbine. Experiments have also used jet nozzles at the rotor blade tips . Aircraft are designed according to many factors such as customer and manufacturer demand, safety protocols and physical and economic constraints. For many types of aircraft

806-577: A rigid basket or gondola slung below it to carry its payload. Early aircraft, including airships , often employed flexible doped aircraft fabric covering to give a reasonably smooth aeroshell stretched over a rigid frame. Later aircraft employed semi- monocoque techniques, where the skin of the aircraft is stiff enough to share much of the flight loads. In a true monocoque design there is no internal structure left. The key structural parts of an aircraft depend on what type it is. Lighter-than-air types are characterised by one or more gasbags, typically with

868-420: A supporting structure of flexible cables or a rigid framework called its hull. Other elements such as engines or a gondola may also be attached to the supporting structure. Heavier-than-air types are characterised by one or more wings and a central fuselage . The fuselage typically also carries a tail or empennage for stability and control, and an undercarriage for takeoff and landing. Engines may be located on

930-517: Is a lifting body , which has no wings, though it may have small stabilizing and control surfaces. Wing-in-ground-effect vehicles are generally not considered aircraft. They "fly" efficiently close to the surface of the ground or water, like conventional aircraft during takeoff. An example is the Russian ekranoplan nicknamed the " Caspian Sea Monster ". Man-powered aircraft also rely on ground effect to remain airborne with minimal pilot power, but this

992-550: Is a stub . You can help Misplaced Pages by expanding it . Mitsubishi Group The Mitsubishi Group ( 三菱グループ , Mitsubishi Gurūpu ) is a group of autonomous Japanese multinational companies in a variety of industries. Founded by Yatarō Iwasaki in 1870, the Mitsubishi Group traces its origins to the Mitsubishi zaibatsu , a unified company that existed from 1870 to 1946. The company, along with other major zaibatsu,

1054-429: Is a vehicle that is able to fly by gaining support from the air . It counters the force of gravity by using either static lift or the dynamic lift of an airfoil , or, in a few cases, direct downward thrust from its engines. Common examples of aircraft include airplanes , helicopters , airships (including blimps ), gliders , paramotors , and hot air balloons . The human activity that surrounds aircraft

1116-437: Is a powered one. A powered, steerable aerostat is called a dirigible . Sometimes this term is applied only to non-rigid balloons, and sometimes dirigible balloon is regarded as the definition of an airship (which may then be rigid or non-rigid). Non-rigid dirigibles are characterized by a moderately aerodynamic gasbag with stabilizing fins at the back. These soon became known as blimps . During World War II , this shape

1178-478: Is called aviation . The science of aviation, including designing and building aircraft, is called aeronautics . Crewed aircraft are flown by an onboard pilot , whereas unmanned aerial vehicles may be remotely controlled or self-controlled by onboard computers . Aircraft may be classified by different criteria, such as lift type, aircraft propulsion (if any), usage and others. Flying model craft and stories of manned flight go back many centuries; however,

1240-452: Is only because they are so underpowered—in fact, the airframe is capable of flying higher. Rotorcraft, or rotary-wing aircraft, use a spinning rotor with aerofoil cross-section blades (a rotary wing ) to provide lift. Types include helicopters , autogyros , and various hybrids such as gyrodynes and compound rotorcraft. Helicopters have a rotor turned by an engine-driven shaft. The rotor pushes air downward to create lift. By tilting

1302-623: Is stored in tanks, usually in the wings but larger aircraft also have additional fuel tanks in the fuselage . Propeller aircraft use one or more propellers (airscrews) to create thrust in a forward direction. The propeller is usually mounted in front of the power source in tractor configuration but can be mounted behind in pusher configuration . Variations of propeller layout include contra-rotating propellers and ducted fans . Many kinds of power plant have been used to drive propellers. Early airships used man power or steam engines . The more practical internal combustion piston engine

SECTION 20

#1732852500596

1364-465: Is the Lockheed SR-71 Blackbird , a U.S. reconnaissance jet fixed-wing aircraft, having reached 3,530 km/h (2,193 mph) on 28 July 1976. Gliders are heavier-than-air aircraft that do not employ propulsion once airborne. Take-off may be by launching forward and downward from a high location, or by pulling into the air on a tow-line, either by a ground-based winch or vehicle, or by

1426-619: The Bell Boeing V-22 Osprey ), tiltwing , tail-sitter , and coleopter aircraft have their rotors/ propellers horizontal for vertical flight and vertical for forward flight. The smallest aircraft are toys/recreational items, and nano aircraft . The largest aircraft by dimensions and volume (as of 2016) is the 302 ft (92 m) long British Airlander 10 , a hybrid blimp, with helicopter and fixed-wing features, and reportedly capable of speeds up to 90 mph (140 km/h; 78 kn), and an airborne endurance of two weeks with

1488-682: The Boeing 747 jet airliner/transport (the 747-200B was, at its creation in the 1960s, the heaviest aircraft ever built, with a maximum weight of over 400 t (880,000 lb)), and the double-decker Airbus A380 "super-jumbo" jet airliner (the world's largest passenger airliner). The fastest fixed-wing aircraft and fastest glider, is the Space Shuttle , which re-entered the atmosphere at nearly Mach 25 or 17,500 mph (28,200 km/h) The fastest recorded powered aircraft flight and fastest recorded aircraft flight of an air-breathing powered aircraft

1550-819: The Cold War made the Eastern Bloc more menacing than the possible revival of a strong Japan and Germany , the occupation forces’ initial aim, just like in Germany, was to weaken the Japanese economy so that the country could never wage war against them. Under this policy, Mitsubishi as a group was dissolved. Mitsubishi Heavy Industries and Mitsubishi Chemical were split into three separate entities. On his deathbed, Koyata Iwasaki staunchly defended his actions, asserting that he had done his utmost for his country and had nothing to be ashamed of. Despite his resistance, he could not defy

1612-628: The Harrier jump jet and Lockheed Martin F-35B take off and land vertically using powered lift and transfer to aerodynamic lift in steady flight. A pure rocket is not usually regarded as an aerodyne because its flight does not depend on interaction with the air at all (and thus can even fly in the vacuum of outer space ); however, many aerodynamic lift vehicles have been powered or assisted by rocket motors. Rocket-powered missiles that obtain aerodynamic lift at very high speed due to airflow over their bodies are

1674-435: The 1930s, large intercontinental flying boats were also sometimes referred to as "ships of the air" or "flying-ships".  — though none had yet been built. The advent of powered balloons, called dirigible balloons, and later of rigid hulls allowing a great increase in size, began to change the way these words were used. Huge powered aerostats, characterized by a rigid outer framework and separate aerodynamic skin surrounding

1736-445: The Japanese distribution representative. Three of the group companies are informally known as the "Three Great Houses" ( 御三家 , Gosanke ) and hold a separate coordinating meeting prior to each Friday Conference: Ten other "major" group companies participate in the coordinating meeting on a rotating basis (with six of the ten companies participating in any given month): Aircraft An aircraft ( pl. : aircraft)

1798-500: The Mitsubishi companies combined generate 7.7% of the total revenue of all publicly traded companies in Japan, and the group's assets amount to 433 trillion yen. The Mitsubishi company was established as a shipping firm by Iwasaki Yatarō (1834–1885) in 1870 under the name "Tsukumo Shokai" ( 九十九商会 ) . In 1873, its name was changed to Mitsubishi Shokai ; Mitsubishi ( 三菱 ) consists of two parts: " mitsu " (三) meaning "three" (as in

1860-470: The aircraft's weight. There are two ways to produce dynamic upthrust — aerodynamic lift by having air flowing past an aerofoil (such dynamic interaction of aerofoils with air is the origin of the term "aerodyne"), or powered lift in the form of reactional lift from downward engine thrust . Aerodynamic lift involving wings is the most common, and can be achieved via two methods. Fixed-wing aircraft ( airplanes and gliders ) achieve airflow past

1922-501: The autogyro moves forward, air blows upward across the rotor, making it spin. This spinning increases the speed of airflow over the rotor, to provide lift. Rotor kites are unpowered autogyros, which are towed to give them forward speed or tethered to a static anchor in high-wind for kited flight. Compound rotorcraft have wings that provide some or all of the lift in forward flight. They are nowadays classified as powered lift types and not as rotorcraft. Tiltrotor aircraft (such as

Mitsubishi Foundation - Misplaced Pages Continue

1984-407: The chairpersons and presidents of major Mitsubishi companies. By 1964, Mitsubishi Heavy Industries also remerged. The Friday Club symbolised the formation of an equal group of companies, rather than the revival of the pre-war Mitsubishi zaibatsu with Mitsubishi Headquarters at the apex. In 1970, Mitsubishi companies established the Mitsubishi Foundation to commemorate the centennial anniversary of

2046-603: The country had decided to wage a war with the United States and the British Empire , each member of the company ought to serve the country in fulfilling its only goal, but the company should not forget what it owed to people in these countries. Arguably, one of the most tangible ways in which Mitsubishi was involved in the war was through its supply of ships, aircraft and other arms by Mitsubishi Heavy Industries. The Mitsubishi A6M Zero fighter, designed by Dr. Jiro Horikoshi

2108-435: The design process is regulated by national airworthiness authorities. The key parts of an aircraft are generally divided into three categories: The approach to structural design varies widely between different types of aircraft. Some, such as paragliders, comprise only flexible materials that act in tension and rely on aerodynamic pressure to hold their shape. A balloon similarly relies on internal gas pressure, but may have

2170-477: The first manned ascent — and safe descent — in modern times took place by larger hot-air balloons developed in the 18th century. Each of the two World Wars led to great technical advances. Consequently, the history of aircraft can be divided into five eras: Lighter-than-air aircraft or aerostats use buoyancy to float in the air in much the same way that ships float on the water. They are characterized by one or more large cells or canopies, filled with

2232-532: The first true manned, controlled flight in 1853. The first powered and controllable fixed-wing aircraft (the airplane or aeroplane) was invented by Wilbur and Orville Wright . Besides the method of propulsion (if any), fixed-wing aircraft are in general characterized by their wing configuration . The most important wing characteristics are: A variable geometry aircraft can change its wing configuration during flight. A flying wing has no fuselage, though it may have small blisters or pods. The opposite of this

2294-467: The founding of the first Mitsubishi company. The companies also individually maintain charitable foundations. Mitsubishi pavilions have been highlights of expositions in Japan since EXPO'70 in Osaka in the 1970s to 1980s. The Mitsubishi Group is made up of about 40 individual companies without a controlling parent company. Each of the Mitsubishi companies owns substantial (but usually not controlling) portions of

2356-418: The fuselage or wings. On a fixed-wing aircraft the wings are rigidly attached to the fuselage, while on a rotorcraft the wings are attached to a rotating vertical shaft. Smaller designs sometimes use flexible materials for part or all of the structure, held in place either by a rigid frame or by air pressure. The fixed parts of the structure comprise the airframe . The source of motive power for an aircraft

2418-503: The gas bags, were produced, the Zeppelins being the largest and most famous. There were still no fixed-wing aircraft or non-rigid balloons large enough to be called airships, so "airship" came to be synonymous with these aircraft. Then several accidents, such as the Hindenburg disaster in 1937, led to the demise of these airships. Nowadays a "balloon" is an unpowered aerostat and an "airship"

2480-647: The largest real estate development companies in Japan. During the Second World War , which was often advertised in government propaganda as a total war, Mitsubishi was a key player in the nation's wartime economy. Educated in England and having many business friends and partners in the Anglosphere , Koyata was opposed to fighting a war against the Allies. However, he famously stated in his speech on 10 December 1941 that once

2542-472: The market capitalisation of the company was significantly less than its real estate holdings. They greenmailed , and other Mitsubishi companies had to buy the shares from them at an unjustly high price. This incident accelerated Mitsubishi's reintegration. In 1954, Mitsubishi Corporation was reformed, and the Mitsubishi Friday Club was established to foster camaraderie and information exchange among

Mitsubishi Foundation - Misplaced Pages Continue

2604-488: The mid-2000s. In addition to the Friday Conference, the group companies' heads of general affairs hold a meeting on the third Monday of each month, and the group companies' legal and IP departments hold a trademark policy coordination meeting on the first Friday of each month. The company briefly dabbled in television during the early 1990s, when it inked a deal with Westinghouse Broadcasting International to become

2666-562: The operation of shipbuilding were used to expand the business further into the manufacture of aircraft and equipment. The experience of overseas shipping led the firm to enter into a trading business. In 1881, the company bought into coal mining by acquiring the Takashima Mine, followed by Hashima Island in 1890, using the production to fuel their extensive steamship fleet. They also diversified into shipbuilding, banking , insurance , warehousing, and trade. Later diversification carried

2728-471: The organization into such sectors as paper , steel , glass , electrical equipment, aircraft , oil , and real estate . As Mitsubishi built a broadly based conglomerate , it played a central role in the modernization of Japanese industry. In 1894, Hisaya Iwasaki succeeded his uncle Yanosuke as president. During his tenure until 1916, he modernised the Nagasaki Shipyard and developed Marunouchi as

2790-411: The rotor forward, the downward flow is tilted backward, producing thrust for forward flight. Some helicopters have more than one rotor and a few have rotors turned by gas jets at the tips. Some have a tail rotor to counteract the rotation of the main rotor, and to aid directional control. Autogyros have unpowered rotors, with a separate power plant to provide thrust. The rotor is tilted backward. As

2852-436: The second type of aircraft to fly, the first being kites , which were also first invented in ancient China over two thousand years ago (see Han Dynasty ). A balloon was originally any aerostat, while the term airship was used for large, powered aircraft designs — usually fixed-wing. In 1919, Frederick Handley Page was reported as referring to "ships of the air," with smaller passenger types as "Air yachts." In

2914-412: The shares of the others. Twenty-nine of the group companies participate in the Friday Conference ( 金曜会 , Kinyō-kai ) , a luncheon meeting of their most senior executives held on the second Friday of each month. The group began its tradition of monthly executive meetings in 1952, and over time the meetings became a venue for coordinating policy between the group companies. By the 1990s, this practice

2976-530: The tether or kite line ; they rely on virtual or real wind blowing over and under them to generate lift and drag. Kytoons are balloon-kite hybrids that are shaped and tethered to obtain kiting deflections, and can be lighter-than-air, neutrally buoyant, or heavier-than-air. Powered aircraft have one or more onboard sources of mechanical power, typically aircraft engines although rubber and manpower have also been used. Most aircraft engines are either lightweight reciprocating engines or gas turbines . Engine fuel

3038-565: The three oak leaves from the crest of the Yamauchi or Tosa family that ruled over Yatarō's birthplace and employed him) and " hishi " (菱, which becomes " bishi " under rendaku ) meaning " water caltrop ", and hence " rhombus ", which is reflected in the company's logo . It is also translated as "three diamonds". Mitsubishi was established in 1870, two years after the Meiji Restoration , with shipping as its core business. Its diversification

3100-614: The tide of the times. His cousin, Hisaya Iwasaki , president of Mitsubishi Partnership Company at the time, expressed his frustration with the situation, noting that the company had been stripped bare, leaving only his ancestral land in Tosa and a mausoleum in Tokyo. His main residence in Shitaya was requisitioned by the American military, and Hisaya had to temporarily rent rooms in his former house. Due to

3162-563: The war. In 2015, Mitsubishi Materials (formerly Mitsubishi Mining) compensated 3,765 Chinese labourers who were conscripted to the company during the war and apologised to ex-American prisoners of war. Mitsubishi was involved in the opium trade in China during this period. After the Second World War, under the Allied Occupation's policy to dissolve zaibatsu , the Mitsubishi conglomerate underwent significant restructuring. Until

SECTION 50

#1732852500596

3224-460: The wind, though normally the pilot can control the altitude, either by heating the air or by releasing ballast, giving some directional control (since the wind direction changes with altitude). A wing-shaped hybrid balloon can glide directionally when rising or falling; but a spherically shaped balloon does not have such directional control. Kites are aircraft that are tethered to the ground or other object (fixed or mobile) that maintains tension in

3286-431: The wing. A flexible wing is a wing made of fabric or thin sheet material, often stretched over a rigid frame, similar to the flight membranes on many flying and gliding animals . A kite is tethered to the ground and relies on the speed of the wind over its wings, which may be flexible or rigid, fixed, or rotary. With powered lift, the aircraft directs its engine thrust vertically downward. V/STOL aircraft, such as

3348-402: The wings by having the entire aircraft moving forward through the air, while rotorcraft ( helicopters and autogyros ) do so by having mobile, elongated wings spinning rapidly around a mast in an assembly known as the rotor . As aerofoils, there must be air flowing over the wing to create pressure difference between above and below, thus generating upward lift over the entire wetted area of

3410-587: The zaibatsu dissolution, Mitsubishi Estate was split into two companies, Kanto Real Estate and Yowa Real Estate. Yowa Real Estate owned a significant portion of the land between the Imperial Palace and Tokyo Station , including the Marunouchi Building . In 1952, an incident occurred where two men, Kuniichiro Fujiami and Shomitsu Tajima, who were closely linked to infamous yakuza , attempted to take over Yowa Real Estate by becoming majority shareholders, as

3472-432: Was criticized (particularly by non-Japanese investors) as a possible violation of antitrust law . Since 1993, the Friday Conference has officially been held as a social function, and not for the purpose of discussing or coordinating business strategy. Despite this, the Friday Conference has been a venue for informal cooperation and coordination between the group companies, most notably in bailing out Mitsubishi Motors during

3534-784: Was disbanded during the occupation of Japan following World War II by the order of the Allies . Despite the dissolution, the former constituent companies continue to share the Mitsubishi brand and trademark . While the group of companies engages in limited business cooperation, most notably through monthly “Friday Conference” executive meetings, they remain formally independent and are not under common control. The three main entities ( gosanke ) are Mitsubishi UFJ Financial Group (the largest bank in Japan), Mitsubishi Corporation (a general trading company), and Mitsubishi Heavy Industries (diversified manufacturing companies). A 2020 estimate concluded that all

3596-400: Was mostly into related fields. It entered into coal-mining to gain the coal needed for ships, bought a shipbuilding yard from the government to repair the ships it used, founded an iron mill to supply iron to the shipbuilding yard, started a marine insurance business to cater for its shipping business, and so forth. Later, the managerial resources and technological capabilities acquired through

3658-657: Was of the NASA X-43 A Pegasus , a scramjet -powered, hypersonic , lifting body experimental research aircraft, at Mach 9.68 or 6,755 mph (10,870 km/h) on 16 November 2004. Prior to the X-43A, the fastest recorded powered airplane flight, and still the record for the fastest manned powered airplane, was the North American X-15 , rocket-powered airplane at Mach 6.7 or 7,274 km/h (4,520 mph) on 3 October 1967. The fastest manned, air-breathing powered airplane

3720-534: Was the primary fighter of the Imperial Navy . Production of these equipments made Mistubishi factories one of the main targets for allies attack, and in one factory the death toll among its workers amounted to 494 in just a week. Mitsubishi Mining was involved in the forced labour of Allied prisoners of war and people from Japan's colonies and occupied territories such as Korea and parts of China. The company's Iizuka mine counted 19 deaths of Chinese labourers during

3782-490: Was used for virtually all fixed-wing aircraft until World War II and is still used in many smaller aircraft. Some types use turbine engines to drive a propeller in the form of a turboprop or propfan . Human-powered flight has been achieved, but has not become a practical means of transport. Unmanned aircraft and models have also used power sources such as electric motors and rubber bands. Jet aircraft use airbreathing jet engines , which take in air, burn fuel with it in

SECTION 60

#1732852500596

3844-439: Was widely adopted for tethered balloons ; in windy weather, this both reduces the strain on the tether and stabilizes the balloon. The nickname blimp was adopted along with the shape. In modern times, any small dirigible or airship is called a blimp, though a blimp may be unpowered as well as powered. Heavier-than-air aircraft or aerodynes are denser than air and thus must find some way to obtain enough lift that can overcome

#595404