Venera 2MV-1 No.2
Template:Short description Template:Infobox spaceflight
Venera 2MV-1 No.2,<ref name="LL"/><ref name="GSP"/> also known as Sputnik 20 in the Western world, was a Soviet spacecraft, which was launched in 1962 as part of the Venera programme. Due to a problem with its upper stage it failed to leave low Earth orbit, and reentered the atmosphere a few days later.<ref name="EA">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> It was the second of two Venera 2MV-1 spacecraft, both of which failed to leave Earth orbit. The previous mission, Venera 2MV-1 No.1, was launched several days earlier.<ref name="GSP">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
LaunchEdit
Venera 2MV-1 No.2 was launched at 02:12:30 UTC on 1 September 1962, atop a Molniya 8K78 carrier rocket flying from Site 1/5 at the Baikonur Cosmodrome.<ref name="LL">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> The lower stages of the rocket operated nominally, injecting the fourth stage and payload into a low Earth orbit. Following a coast phase, the upper stage was to have ignited around sixty-one minutes and thirty seconds after launch, in order to place the spacecraft into heliocentric orbit. The ignition command did not reach the engine, however, and the fuel valves did not open, so the upper stage failed to ignite leaving the payload in geocentric orbit.<ref name="EA-R7">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> It reentered the atmosphere on 6 September 1962, five days after it had been launched.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
Satellite designationEdit
The designations Sputnik 24,<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> and later Sputnik 20, were used by the United States Naval Space Command to identify the spacecraft in its Satellite Situation Summary documents, since the Soviet Union did not release the internal designations of its spacecraft at that time, and had not assigned it an official name due to its failure to depart Earth orbit.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>