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astronautix.com Mars 1M


Manufacturer's Designation: 1M. Class: Planetary. Type: Mars. Nation: USSR. Manufacturer: Korolev.

Mars probe intended to photograph Mars on a flyby trajectory. The Mars probe had a mass of about 640 kg and carried a magnetometer, cosmic ray counter, plasma-ion trap, and micrometeorite detector.


Specification

Total Mass: 640 kg.


Mars 1M Chronology


10 December 1959 Further development of Soviet Lunar and Planetary probes approved.

Central Committee of the Communist Party and Council of Soviet Ministers Decree 1386-618 'On the Creation of AMS for Landing on the Moon. and Flights to Venus and Mars-- approving automated lunar and interplanetary spacecraft' was issued.


10 October 1960 Mars probe 1M s/n 1 failure. Program: Mars. Launch Site: Baikonur . Launch Vehicle: Molniya 8K78. FAILURE: At T+300.9 sec, the launcher went out of control and the destruct command was given at T+324.2 sec - the engine of Stage 3 cut off after 13.32 s of burning. Mass: 640 kg.

This was the Soviet Union's first attempt at a planetary probe. Mars probe intended to photograph Mars on a flyby trajectory. The possible cause lay in resonance vibrations of upper stages during Stage 2 burning, which led to break of contact in the command potentiometer of the gyrohorizon. As a result a pitch control malfunctioned and the launcher began to veer off the desired ascent profile. On exceeding 7 degrees of veering in pitch, the control system failed. The upper stage with the payload reached an altitude of 120 km before burning up on re-entry into the atmosphere above East Siberia.


14 October 1960 Mars probe 1M s/n 2 failure. Program: Mars. Launch Site: Baikonur . Launch Vehicle: Molniya 8K78. FAILURE: At T+290 sec Stage 3's engine 8D715K failed to ignite because a LOX leak froze kerosene in the fuel inlet to the pump on the launch pad due to a faulty LOX valve seal.

Mars probe intended to photograph Mars on a flyby trajectory. This was the Soviet Union's second attempt at a planetary probe. The upper stages and payload broke up on re-entry into the atmosphere.



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Last update 12 March 2001.
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