Kosmos 434

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Kosmos 434
Soviet lunar lander drawing.svg
LK Lander
Mission typeSpacecraft test
OperatorSoviet space program
COSPAR ID 1971-069A OOjs UI icon edit-ltr-progressive.svg
SATCAT no. 5407
Mission duration10 years and 11 days
Spacecraft properties
Spacecraft T2K No.3
Manufacturer OKB-1
Launch mass7,000 kilograms (15,000 lb) [1]
Start of mission
Launch date12 August 1971, 09:30 (1971-08-12UTC09:30Z) UTC [2]
Rocket Soyuz-L
Launch site Baikonur 31/6
End of mission
Decay date23 August 1981
Orbital parameters
Reference system Geocentric
Regime Medium Earth
Semi-major axis 12,353.00 kilometres (7,675.80 mi)
Eccentricity 0.46911647
Perigee altitude 187 kilometres (116 mi)
Apogee altitude 11,777 kilometres (7,318 mi)
Inclination 51.5 degrees
Period 227.94 minutes
Epoch 11 September 1971 [3]
  T2K No.2

Kosmos 434 ( ‹See Tfd› Russian : Космос 434; meaning Cosmos 434), also known as T2K No.3, was the final uncrewed test flight of the Soviet LK Lander. It performed the longest burn of the four uncrewed LK Lander tests, validating the backup rocket engine of the LK's Blok E propulsion system. It finished in a 186 km by 11,804 km orbit. This test qualified the lander as flightworthy.

Contents

The LK was the only element of the Soviet human lunar programs that reached this status. In 1980-81 there were fears that it might carry nuclear fuel. When it reentered over Australia on August 22, 1981 the Soviet Foreign Ministry in Australia admitted that Kosmos 434 was an "experiment unit of a lunar cabin," or lunar lander.

See also

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References

  1. "Cosmos 434". nssdc.gsfc.nasa.gov. NASA . Retrieved 15 December 2013.
  2. Jonathan McDowell. "Launch Log". Jonathan's Space Page. Retrieved 15 December 2013.
  3. Jonathan McDowell. "Satellite Catalog". Jonathan's Space Page. Retrieved 15 December 2013.