The uncrewed spacecraft was destroyed on its third
orbit around
Earth. Two
ground stations, one in Klyuchi and the other in
Yelizovo, sent simultaneous commands, instead of sequentially as planned, instructing the craft to depressurize its airlock. The craft interpreted this as an order to begin the descent and a
propulsion error put the craft into a tumble. Approximately twenty-nine minutes later, the craft's automatic self-destruct function activated. The craft was completely destroyed to prevent sensitive information from literally falling into enemy hands. Over 100 pieces of the spacecraft were tracked, falling into the ocean between 31 March and 6 April 1965. No other test or backup spacecraft was built with an EVA port. The decision was made to go ahead with Voskhod 2 anyway, due to a one-year lead time to construct a replacement. Planned follow-on Voskhod missions were cancelled, including the Soviet Air Force version, long-duration one-man flight. File:Vostok_spacecraft.jpg|Vostok spacecraft File:Voskhod_1_and_2.svg|Voskhod 1 and Voskhod 2 spacecraft File:Voskhod-2_airlock_and_spacesuit.jpg|Volga airlock and Berkut spacesuit like those used for the spacewalk of Alexey Leonov on the Voskhod 2 mission, Memorial Museum of Cosmonautics, Moscow. == See also ==