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astronautix.com Luna E-6LS

Luna 10 / E-6S
Luna 10 / E-6S - E-6S lunar orbiter spacecraft. The E-6LF and E-6LS spacecraft may have been similar.

Credit: NASA. 24,484 bytes. 218 x 410 pixels.



Manufacturer's Designation: E-6LS. Class: Planetary. Type: Lunar. Nation: USSR. Manufacturer: OKB-1.

The E-6LS was a radio-equipped version of the E-6 used to test tracking and communications networks for the Soviet manned lunar program. Otherwise the spacecraft instrumentation was similar to that of the E-6LF and provided data for studies of the interaction of the earth and lunar masses, the lunar gravitational field, the propagation and stability of radio communications to the spacecraft at different orbital positions, solar charged particles and cosmic rays, and the motion of the Moon.


Specification

Total Mass: 1,700 kg.


Luna E-6LS Chronology


17 May 1967 Cosmos 159 Program: Lunar L1. Launch Site: Baikonur . Launch Vehicle: Molniya 8K78M. Mass: 4,490 kg. Perigee: 350 km. Apogee: 60,637 km. Inclination: 51.6 deg.

The E-6LS was a radio-equipped version of the E-6 used to test tracking and communications networks for the Soviet manned lunar program. The payload entered the desired orbit as Kosmos-159.


07 February 1968 E-6LS s/n 112 Program: Lunar L1. Launch Site: Baikonur . Launch Vehicle: Molniya 8K78M. FAILURE: At T+524.6 sec Stage 3's engine 11D55 cut off prematurely because it ran out of fuel due to an excessive fuel consumption rate through the gas-generator.

Failed launch of an E-6LS radio-equipped version of the E-6 used to test tracking and communications networks for the Soviet manned lunar program. Suggestions for the abnormal consumption included the seizing up of a pintle valve for controlling fuel supply into the regulator or the seizing up of the fuel inlet control. The upper stages broke up in the atmosphere.


07 April 1968 Luna 14 Program: Lunar L3. Launch Site: Baikonur . Launch Vehicle: Molniya 8K78M. Mass: 1,700 kg.

Lunar Orbiter; studied lunar gravitational field, Earth-Moon gravitational relationship, and conducted further scientific experiments in circumlunar space. Not revealed until years later was that the E-6LS was primarily intended to test tracking and communications networks for the Soviet manned lunar program. The Luna 14 spacecraft entered a 140 x 870 km x 42 degree lunar orbit on April 10, 1966. The spacecraft instrumentation was similar to that of Luna 10 and provided data for studies of the interaction of the earth and lunar masses, the lunar gravitational field, the propagation and stability of radio communications to the spacecraft at different orbital positions, solar charged particles and cosmic rays, and the motion of the Moon. This flight was the final flight of the second generation of the Luna series.



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Last update 12 March 2001.
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