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Vostok-2

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Vostok 2 ( Russian : Восток-2 , Orient 2 or East 2 ) was a Soviet space mission which carried cosmonaut Gherman Titov into orbit for a full day on August 6, 1961, to study the effects of a more prolonged period of weightlessness on the human body. Titov orbited the Earth over 17 times, exceeding the single orbit of Yuri Gagarin on Vostok 1 − as well as the suborbital spaceflights of American astronauts Alan Shepard and Gus Grissom aboard their respective Mercury-Redstone 3 and 4 missions. Titov's number of orbits and flight time would not be surpassed by an American astronaut until Gordon Cooper's Mercury-Atlas 9 spaceflight in May 1963.

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24-584: Vostok-2 may refer to: Vostok 2 , Soviet crewed spaceflight Vostok-2 (rocket) , Soviet rocket Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title Vostok-2 . 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=Vostok-2&oldid=1045898693 " Category : Disambiguation pages Hidden categories: Short description

48-514: A conical equipment module (mass 2.27 tonnes or 5,000 pounds, 2.25 m (7.4 ft) long, 2.43 m (8.0 ft) wide), which contained propellant and the engine system. Voskhod was superseded by the Soyuz spacecraft in 1967. The Voskhod spacecraft was, essentially, a Vostok spacecraft that had a backup solid fuel retrorocket added to the top of the descent module. The ejection seat was removed for more space and two or three crew couches were added to

72-418: A six orbit mission, during which the animals had experienced convulsions and thus all subsequent Vostok missions were limited to three orbits maximum. Although dogs and humans were very different physiologically, the doctors were worried about the risks posed on a longer flight. There was also the purely practical aspect of spacecraft recovery. If Vostok 2 flew three orbits, reentry and landing would take place in

96-520: A spacesuit as a precaution against accidental descent module depressurization. The airlock was jettisoned after use. The lack of ejection seats meant that the Voskhod crew would return to Earth inside their spacecraft, unlike the Vostok cosmonauts who ejected and parachuted down separately. Because of this, a new landing system was developed, which added a small solid-fuel rocket to the parachute lines. It fired as

120-462: Is 11.5 km South of Krasny Kut, Saratovskaya oblast in the Russian Federation. At the roadside site are two monuments dedicated to the Vostok 2 mission. The larger one is a 9 meter tall, silver painted stone sculpture, that resembles a single bird's wing pointed skyward. The center of the wing has a series of looping openings, one atop the next, that resemble a row of feathers. To the right of

144-512: Is different from Wikidata All article disambiguation pages All disambiguation pages Vostok 2 After the flight of Vostok 1, Sergei Korolev took a short vacation in Crimea where he began working out the flight plan for the next mission. There were considerable arguments over the duration of the mission as flight doctors argued for no more than three orbits. The flight of Korabl-Sputnik 2 nine months earlier had carried two dogs on

168-512: The Blok E equipped R-7 booster lacked sufficient lift capacity for a backup retrorocket. Since Voskhod was well below the maximum lift capacity of the larger Blok I equipped R-7, it would be put into a quite high orbit and not decay in ten days. Voskhod utilized the 11A57 booster, essentially the Molniya 8K78L with the Blok L stage removed to create a medium-lift LEO launcher, and later the launch vehicle for

192-472: The Soyuz program. The spacecraft lacked any launch escape system, meaning that the crew would not survive a booster failure that occurred in the first 2.5 minutes of launch (after payload shroud jettison, the descent module could be detached). Although work had begun on an LES in 1962, it was not ready yet and so the engineers and cosmonauts had to gamble that the booster functioned properly during ascent, as by 1964,

216-439: The capsule as planned and parachuted separately to land at 0718 UTC on 7 August 1961, near Krasny Kut, Saratov Oblast . Just prior to ejecting, Titov turned his head to look at something and so got his face rammed into his helmet at ejection, giving himself a bloody nose. The Vostok 2 landing site coordinates are 50°51′10″N 47°01′14″E  /  50.85276°N 47.02048°E  / 50.85276; 47.02048 , which

240-457: The condition. Titov took manual control of the capsule's attitude for a time as he passed over Africa on his first orbit and would again at the end of the seventh orbit; the controls were reported to function well. Titov exchanged greetings with Soviet Premier Nikita Khrushchev as he passed over the Soviet Union at the end of his first orbit, replicating Gagarin's feat. During his flight

264-716: The cosmonaut posed by prolonged weightlessness. Korolev argued that since it would still take an entire day for landing in southern Russia to be possible again, there was no reason not to go for it. Besides, he argued, missions of the future would inevitably require lengthy stays in space. The flight was targeted for somewhere between July 25 and August 5. To ensure safe radiation levels, balloons equipped with Geiger counters were flown aloft; in addition, similar equipment would be carried on Vostok 2. Several enhancements were made to Vostok 2, including an improved TV transmission system and better climate control systems. Liftoff took place August 6 at 8:57 AM Moscow time and booster performance

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288-512: The craft. It was needed because the vehicle's electrical and environmental systems were air-cooled, and complete capsule depressurization would lead to overheating. The airlock weighed 250 kg (550 lb), was 70 cm (28 in) in diameter, 77 cm (30 in) high when collapsed for launch. When extended in orbit, it was 2.5 m (8.2 ft) long, had an internal diameter of 1 m (3 ft 3 in) and an external diameter of 1.2 m (3.9 ft). The second crew member wore

312-423: The descent module neared touchdown, providing a softer landing. A backup solid-fueled retrorocket was added to the top of the descent module in the event that the main retrorocket failed. This had not been necessary on Vostok as the orbit was low enough that the spacecraft's orbit would decay in ten days if the retrorocket failed, there being enough onboard consumables to sustain the cosmonaut that long. In any case,

336-460: The first manual photographs were taken from orbit, thus setting a record for first photos of Earth from space . He also was the first person to film the Earth using, for ten minutes, a professional quality Konvas-Avtomat movie camera. A camera aboard the capsule transmitted smiling pictures of Titov to the ground as he passed over Soviet territory on the fifth orbit. Titov settled down to sleep during

360-426: The flight at 07:45 UTC. Nausea set in after Titov achieved free fall in orbit, causing him to vomit when he tried to eat one of his planned meals. Soviet space program officials suspected disturbance of Titov's vestibular system was to blame, leading them to begin early investigations into what is now known as space adaptation syndrome , or space sickness. Titov is believed to be the first spacefarer to experience

384-416: The interior at a 90° angle to that of the Vostok crew position. There was no provision for crew escape in the event of a launch or landing emergency. Lack of space meant that the three crew members of Voskhod 1 did not wear space suits . Both crew members wore spacesuits on the Voskhod 2 mission, as it involved an EVA and used an inflatable airlock. This allowed cosmonaut Alexei Leonov to exit and re-enter

408-434: The seventh orbit; he awoke over eight hours later, 37 minutes after the scheduled end of his sleep period. Sleep did not relieve Titov's serious discomfort; he still felt very ill after awaking. After 12 orbits Titov suddenly began to recover, and became "completely functional and fully fit". Detailed information about the radio frequencies used by the spacecraft were made public before Titov's flight; listening posts around

432-507: The spacecraft for a short while. Another change came when the Soviets admitted that Titov did not land with his spacecraft. Titov would claim in an interview that he ejected from his capsule as a test of an alternative landing system; it is now known that all Vostok program landings were performed this way. The re-entry capsule was destroyed during development of the Voskhod spacecraft . Titov

456-609: The wide open steppes of southern Russia, the landing site moving steadily further west with each orbit. Orbits 8-13 would drop the capsule into the Pacific Ocean , after which landing would again occur in Soviet territory, but in the remote, frozen wastes of Siberia . Thus, it was necessary to spend a full 24 hours in space before it would be once again possible to land in the prime recovery area in southern Russia. The three orbit limit thus would not only make landing easy, but minimize risks to

480-562: The wing sculpture is a 2 meter high, silver painted square stone block, with a rounded corner on the front side. A portrait of Titov, wearing a space helmet, is on one side of the stone block, the other side contains red painted text commemorating the mission. In 1964, the Vostok 2 capsule was reused as a ballast weight in a test of an experimental parachute system planned for the Voskhod capsule. The prototype malfunctioned, shattering Vostok 2 into tiny pieces. Voskhod spacecraft The Voskhod ( Russian : Восход , "Sunrise" )

504-423: The world picked up voice and telemetry signals from Vostok 2, allaying suspicions that the spaceflight might have been faked. As on Vostok 1, the Vostok 2 service module failed to detach from the reentry module when commanded and reentry began with the former still attached; the conjoined modules gyrated violently until aerodynamic heating burned through the straps still holding them together. Titov ejected from

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528-509: Was a spacecraft built by the Soviet Union 's space program for human spaceflight as part of the Voskhod programme . It was a development of and a follow-on to the Vostok spacecraft . Voskhod 1 was used for a three-man flight whereas Voskhod 2 had a crew of two. They consisted of a spherical descent module (diameter 2.3 metres (7.5 ft)), which housed the cosmonauts , and instruments, and

552-522: Was a month short of 26 years old at launch. He was the youngest person to reach space until the launch of Blue Origin NS-16 in 2021. He remains the youngest person to orbit the Earth . Gherman Titov launched from Gagarin's Start at Baikonur Cosmodrome on 6 August 1961 at 06:00 UTC aboard the Vostok 2 space capsule . Radio personality Yuri Levitan interrupted Radio Moscow programming with an announcement of

576-471: Was almost flawless, placing the spacecraft into a 184x244 km orbit. The flight was an almost complete success, marred only by a heater that had inadvertently been turned off prior to liftoff and that allowed the inside temperature to drop to 50 °F (10 °C), a bout of space sickness , and a troublesome re-entry when the reentry module failed to separate cleanly from its service module . Unlike Yuri Gagarin on Vostok 1, Titov took manual control of

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