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astronautix.com Venera 1V (V-67)

Venera 4
Venera 4 -

Credit: NASA. 16,024 bytes. 338 x 217 pixels.



Manufacturer's Designation: 1V (V-67). Class: Planetary. Type: Venus. Nation: USSR. Manufacturer: Lavochkin.

Venus probe with the announced mission of direct atmospheric studies. The descent vehicle carried two thermometers, a barometer, a radio altimeter, an atmospheric density gauge, 11 gas analyzers, and two radio transmitters operating in the DM waveband. The main bus, which carried the capsule to Venus, had a magnetometer, cosmic ray detectors, hydrogen and oxygen indicators, and charged particle traps. Signals were returned by the spacecraft, which braked and then deployed a parachute system after entering the Venusian atmosphere, until it reached an altitude of 24.96 km.


Specification

Total Mass: 1,105 kg.


Venera 1V (V-67) Chronology


12 June 1967 Venera 4 Program: Venera. Launch Site: Baikonur . Launch Vehicle: Molniya 8K78M. Mass: 1,104 kg.

Venera 4 was successfully launched towards the planet Venus with the announced mission of direct atmospheric studies. On October 18, 1967, the descent vehicle entered the Venusian atmosphere. Signals were returned by the spacecraft, which deployed a parachute after braking to subsonic velocity in the Venusian atmosphere, until it reached an altitude of 24.96 km.


17 June 1967 Cosmos 167 Program: Venera. Launch Site: Baikonur . Launch Vehicle: Molniya 8K78M. FAILURE: Stage 4's engine 11D33 failed to ignite because the turbopump had not been cooled before ignition. Mass: 1,106 kg. Perigee: 211 km. Apogee: 264 km. Inclination: 51.8 deg.

Suggestions for the cause of the failure included incorrect soldering of wires in multiple pin plugs, wrong attachments of the plugs to the pyrotechnic connectors, or a mix-up of the pyrotechnic connectors during assembly.. Investigation of the upper atmosphere and outer space.



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Last update 12 March 2001.
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