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Post Info TOPIC: Mars 7


L

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RE: Mars 7 spacecraaft
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TheMars 7spacecraaftsuccessfully lifted off on August 9, 1973, into an intermediate Earth orbit on a Proton SL-12/D-1-e booster and then launched into a Mars transfer trajectory.



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L

Posts: 131433
Date:
Mars 7
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The Mars program was a series of unmanned spacecraft launched by the Soviet Union between 1960 and 1973. The spacecraft were intended to explore Mars, and included flyby probes, landers and orbiters.
Mars 7 successfully lifted off on August 9, 1973, into an intermediate Earth orbit on a Proton SL-12/D-1-e booster and then launched into a Mars transfer trajectory. Total fueled launch mass of the lander and bus was 3260 kg. It reached Mars on March 9, 1974. Due to a problem in the operation of one of the on-board systems (attitude control or retro-rockets) the landing probe separated prematurely (4 hours before encounter) and missed the planet by 1300 km. The early separation was probably due to a computer chip error which resulted from degradation of the systems during the trip to Mars. The intended landing site was 50S 28W. The lander and bus continued on into heliocentric orbits.

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