SOYUZ 21 Soviet (USSR) 1976 eary ended mission crew RARE official portraights for Sale

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SOYUZ 21 Soviet (USSR) 1976 eary ended mission crew RARE official portraights For Sale

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SOYUZ 21 Soviet (USSR) 1976 eary ended mission crew RARE official portraights:
$19.99

You are offerding SOYUZ 21 Soviet (USSR) early ended space mission crew
RARE official portraights Soyuz 21(Russian:Союз 21,Union 21) was a 1976Sovietcrewed mission to theSalyut 5space station, the first of three flights to the station.[4]The mission\'s objectives were mainly military in scope, but included other scientific work. The mission ended abruptly with cosmonautsBoris VolynovandVitaly Zholobovreturning toEarthafter 49 days in orbit. The precise reason for the early end of the mission was the subject of much speculation, but was reported to be an emergency evacuation after the Salyut atmosphere developed an acrid odor.

Salyut 5, the last dedicatedmilitaryspace stationin theSovietspace program,[5]was launched 22 June 1976. Its first crew was launched 14 days later on 6 July 1976, with Commander Volynov and Flight Engineer Zholobov aboard Soyuz 21. Based on landing opportunities, observers estimated the mission was intended to last 54 to 66 days.[5]They docked with the station the next day, and gave a televised tour 8 July 1976.[5]

Their stay coincided with the start of the Siber military exercise inSiberia, which they observed as part of an assessment of the station\'s military surveillance capabilities. They conducted only a few scientific experiments, including the first use of the Kristall furnace forcrystalgrowth. Engineering experiments included propellant transfer system tests with implications for future operation of the freight-carryingProgress spacecraft.

Experiments conducted during the mission were mainly of amilitary natureas part of theAlmazprogram. Various purely scientific tasks were also carried out, includingsolar observationsandbiological observationsof anaquarium of fishcarried into orbit.[5]A television link-up with school children on 17 August 1976 was also undertaken.[5]

On 24 August 1976, it was announced the mission was to end in only 10 hours, a development which caught even the reporters ofRadio Moscowby surprise.[5]The reason for the sudden termination of the mission was reported at the time to have been an acrid odor that developed in the environmental control system. The problem was said to have begun as early as 17 August 1976.[5]The Soviets made no comments at the time, but the next crew to board the station wore breathing masks.[6]Later reports indicate that the mission may have ended owing to a deterioration in the health of Zholobov. The mission was to last two months but was cut short by a gradually worsening illness of Zholobov.[1]

Thecosmonautsboarded Soyuz 21 but as Volynov tried to undock from the station, the docking latches failed to release properly. As he fired the jets to move the spacecraft away, the docking mechanism jammed, resulting in the Soyuz being undocked but still linked to Salyut. As the two spacecraft moved out of range of ground communications, the cosmonauts received only the first set of emergency procedures. Volynov tried a second time to undock but only managed slightly to loosen the latches. The situation persisted for an entire orbit, 90 minutes, when the final set of emergency procedures were received and the crew finally disengaged the latches.

Because Soyuz 21 was returning early, it was outside the normal recovery window. It then encountered strong winds as it descended, which caused uneven firing of the retrorockets. It made a hard landing around midnight 200km (120mi) at the southwest ofKokchetav,Kazakhstan.[1]

Zholobov\'s illness was apparently caused bynitric acidfumes leaking from the Salyut\'s propellant tanks; other reports, however, indicate that the crew failed to follow their physical exercise program and suffered from lack of sleep.[7]Sources atNASAhave reported that psychologists with theRussian Aviation and Space Agencycited Soyuz 21 as ending prematurely due to unspecified \"interpersonal issues\" with the crew.[8]The next mission to successfully dock with the station,Soyuz 24, would vent Salyut 5\'s air to space and replace it due to concerns the air had become toxic.

You will receive :1) CommanderBoris Valentinovich Volynovofficial photo as a colonel of Soviet Air Forces with brief russian language biography printed on backward side. He is pictured with two Hero of the Soviet Union,Pilot-cosmonaut of USSR, pilot class, military high education and many Soviet orders and medals signson his uniform. Size is 20x15 cm. ( 8\"x6\")2)Flight EngineerVitaly Mikhaylovich Zholobovofficial photo as a civilian with brief russian language biography printed on backward side. .Size is 20x15 cm. ( 8\"x6\")3) Flight EngineerVitaly Mikhaylovich Zholobovofficial drawing portraight with brief russian language biography printed onbackward side. He is pictured as aas acolonel of Soviet Air Forceswith Hero of the Soviet Union, Pilot-cosmonaut of USSR,pilot class, military high educationsigns. Size is 15 x10cm. (6\"x 4\")
4) Postal stam, issued in 1976 in Soviet Union to commemorate this mission flightYou\'ll also receive a FREE BONUS:MIR space station Kristall module 1990 launch document copy with mission briefing, module schemes, mission specialists autographs etc.FREE shipping worldwide!Please, observe my other items.Happy offerding and Have a nice day!