Soyuz 1 (Russian Союз 1, Union 1 ) belonged to the space program of the Soviet Union and was placed on orbit the April 23rd 1967, with a cosmonaut, Colonel Vladimir Mikhailovich Komarov, which was killed during crushing during the return on Ground.

The planners of the mission had originally envisaged to launch a second Soyuz 2 orbits the day following of it while carrying 3 cosmonauts - Valeri Bykovski, Yevgeny Vassilyevich Khrunov and Aleksei Stanislavovich Yeliseyev - and two of them were planned for an external exit towards Soyuz 1 . Shortly after launching, the problems started when one of the solar panels refused to be unfolded, causing a lack of power for the system of the vessel. In the same way, of the problems with the detectors of orientation complicated its maneuverability. The crew of the second Soyuz was involved to repair the solar panel of the Soyuz 1 but an important rain with Baikonur made launching impossible. That had as a result of désorbiter Soyuz 1 as of its passage above the the USSR. The principal parachute did not open due to a pressure pick-up and the parachute of help, deployed manually, was twisted not slowing down the fall of the vessel. Komarov was killed by the impact of landing. The mission of Soyuz 1 and 2 was carried out later by the Soyuz 4 and Soyuz 5.

The crew of help was Youri Gagarine.

Crew

• Vladimir Komarov

Parameters of the mission

• Mass: 6450 kg
• Perigee: 197 km
• Apogee: 223 km
• Slope: 50.8°
• Period: 88.7 minutes