Vostok programme

The world's first artificial satellite, Sputnik 1, had been put into orbit by the Soviets in 1957. The next milestone in the history of space exploration would be to put a human in space, and both the Soviets and the Americans wanted to be the first. ==Cosmonaut selection and training==

By January 1959, the Soviets had begun preparations for human spaceflight. Physicians from the Soviet Air Force insisted that the potential cosmonaut candidates be qualified Air Force pilots, arguing that they would have relevant skills such as exposure to higher g-forces, as well as ejection seat experience; also the Americans had chosen the Mercury Seven in April 1959, all of whom had aviation backgrounds. Chief designer of the Soviet space program, Sergei Korolev, decided that the cosmonauts must be male, between 25 and 30 years old, no taller than 1.75 meters, and weigh no more than 72 kilograms. The final specifications for cosmonauts were approved in June 1959. By September, interviews with potential cosmonauts had begun. Although the pilots were not told they might be flying into space, one of the physicians in charge of the selection process believed that some pilots had deduced this. By the end of 1959, 20 men had been selected. Korolev insisted on having a larger group than NASA's astronaut team of seven. On January 11, 1960, Soviet Chief Marshal of Aviation Konstantin Vershinin approved plans to establish the Cosmonaut Training Center, whose exclusive purpose would be to prepare the cosmonauts for their upcoming flights; initially the facility would have about 250 staff. Vanguard Six At the Gromov Flight Research Institute, a spacecraft simulator had been built, called the TDK-1. Owing to the inefficiency of training all 20 cosmonauts in the simulator, it was decided they would select six men who would go through accelerated training. This group, which would be known as The Vanguard Six, was decided on May 30, 1960, and initially consisted of Gagarin, Kartashov, Nikolayev, Popovich, Titov, and Varlamov. In July, shortly after relocation to Star City, two of the six were replaced on medical grounds. Firstly, during a centrifuge test of 8 g, Kartashov experienced some internal damage, causing minor hemorrhaging on his back. Despite Gagarin's requests for him to stay, the doctors decided to remove Kartashov from the group of six. Later in July, Varlamov was involved in a swimming accident. During a dive into a lake near the training center, he hit his head on the bottom, displacing a cervical vertebra. So by the end of July, the Vanguard Six were: Gagarin, Bykovskiy, Nelyubov, Nikolayev, Popovich, and Titov. On January 17, the six participated in their final exams, including time spent in a simulator, and a written test. Based on these results, a commission, supervised by Kamanin, recommended the use of the cosmonauts in the following order: Gagarin, Titov, Nelyubov, Nikolayev, Bykovskiy, Popovich. ==Missions==

in Moscow Vostok 1, the first human spaceflight in April 1961, was preceded by several preparatory flights. In mid-1960, the Soviets learned that the Americans could launch a sub-orbital human spaceflight as early as January 1961. Korolev saw this as an important deadline, and was determined to launch a crewed orbital mission before the Americans launched their human suborbital mission. By April 1960, designers at Sergei Korolev's design bureau, then known as OKB-1, had completed a draft plan for the first Vostok spacecraft, called Vostok 1K. This design would be used for testing purposes; also in their plan was Vostok 2K, a spy satellite that would later become known as Zenit 2, and Vostok 3K, which would be used for all six crewed Vostok missions. Despite the very large geographical size of the Soviet Union, there were obvious limitations to monitoring orbital spaceflights from ground stations within the country. To remedy this, the Soviets stationed about seven naval vessels, or tracking ships, around the world. For each ground station or tracking ship, the duration of communications with an orbiting spacecraft was limited to between five and ten minutes. At Korolev's suggestion, the media would call the spacecraft Korabl-Sputnik, ("Satellite-ship"); the name Vostok was still a secret codename at this point. Vostok 1K The next six launches were all of the Vostok 1K design, equipped with life-support facilities, and planned to be recovered after orbit. The first spacecraft launched on July 28, 1960 carried two space dogs named Chayka and Lisichka. An explosion destroyed the spacecraft shortly after launch, killing both dogs, and the mission was not given a name. This mission was successful, and Belka and Strelka became the first living beings recovered from orbit. This represented a significant success for the Vostok programme. A major setback occurred on October 24, when a rocket explosion killed over 100 people, including Chief Marshal of Artillery Mitrofan Nedelin, in what is now called the Nedelin catastrophe. This was one of the worst disasters in the history of spaceflight. It involved a rocket that was not designed by Korolev, and was not necessary for the Vostok programme; the rocket was by rival designer Mikhail Yangel, intended to be a new generation of intercontinental ballistic missiles. It would be two weeks before work on the Vostok programme continued, and it was realised that the original target of a December crewed launch was unrealistic. At the time, the press reported that an incorrect altitude caused the cabin to be destroyed upon re-entry. Despite Korolev's desire to announce this failure to the press, the State Commission vetoed the idea. Vostok 3KA The two uncrewed missions immediately preceding the first human flight used the same spacecraft design as in the crewed missions, a design called Vostok 3KA (or 3A). The only differences were that they would carry a single dog into orbit, a life-size mannequin would be strapped into the main ejection seat, and (unlike the crewed missions) they had a self-destruct system. The recent failures of Vostok 1K were not encouraging, but it was decided to proceed with launches of an automated variant of Vostok 3KA, the spacecraft design that would conduct a human spaceflight. The approval of a crewed mission was contingent upon the success of the two automated Vostok 3KA missions. Unlike the previous Vostok 1K flights, the two uncrewed Vostok 3KA flights were planned to last only a single orbit, to imitate the plan for the first human flight. The first of these uncrewed flights, Korabl-Sputnik 4, was launched on March 9, 1961. It carried the dog Chernushka into orbit, as well as a mannequin called Ivan Ivanovich, who wore a functioning SK-1 spacesuit. The dog was contained in a small pressurized sphere, which also contained 80 mice, several guinea pigs, and other biological specimens. The spaceflight lasted 106 minutes, and the dog was recovered alive after landing. The mission was a complete success. Unsubstantiated reports of other cosmonaut deaths created the myth of the lost cosmonaut. The next uncrewed flight, Korabl-Sputnik 5, was launched on March 25, two days after Bondarenko's death. Like the previous Vostok 3KA flight, it lasted for only a single orbit, carried a mannequin and many animals, which included frogs, plants, mice, rats, and a dog, Zvezdochka ("Starlet", or "Little star"). This mission was also a complete success, which was the final step required to get approval for a crewed mission. The re-entry module of the Korabl-Sputnik 5 spacecraft, also called Vostok 3KA-2, was auctioned at Sotheby's on April 12, 2011, the 50th anniversary of the first human spaceflight, Vostok 1. Evgeny Yurchenko, a Russian investment banker, paid $2,882,500 for the capsule. Crewed flights Cancelled missions One different (1963) and seven original (going through to April 1966) Vostok flights were originally planned: • Vostok 6A - pair to Vostok 5 group flight with female cosmonaut instead fulfilled Vostok 6 flight *Vostok 7 - 8-days high-altitude flight for radiological-biological studies with natural re-entry from orbit [https://web.archive.org/web/20020629001212/http://www.astronautix.com/flights/vostok7.htm • Vostok 8 - pair to Vostok 9 10-days group high-altitude flight for extended scientific studies with natural re-entry from orbit *Vostok 9 - pair to Vostok 8 10-days group high-altitude flight for extended scientific studies with natural re-entry from orbit [https://web.archive.org/web/20020330111452/http://www.astronautix.com/flights/vostok9.htm • Vostok 10 - 10-days high-altitude flight for extended scientific studies with natural re-entry from orbit *Vostok 11 - supplemental flight for extra-vehicular activity tests [https://web.archive.org/web/20020827225021/http://astronautix.com/flights/vostok11.htm • Vostok 12 - supplemental flight for extra-vehicular activity tests *Vostok 13 - 10-days high-altitude flight for extended scientific studies with natural re-entry from orbit [https://web.archive.org/web/20020628233751/http://www.astronautix.com/flights/vostok13.htm All these original missions were cancelled in early 1964 and the components recycled into the Voskhod programme, which was intended to achieve more Soviet firsts in space. ==Notes==