Luna 17

Luna 17
Missing image
Lunakod_landing_bus.jpg
Luna 17

Organization:Soviet Union
Major Contractors: GSMZ Lavochkin
Mission Type: Planetary Science
Lunar roving vehicle
Satellite of: Moon
Launch: November 10, 1970 at 14:44:01 UTC
Launch Vehicle: Proton 8K82K + Blok D
Mission Highlight: Landed lunar roving vehicle
November 17, 1970, 03:46:50 UTC
at 38°17' N, - 35° W.
Mission Duration: 322-days. Last contact
September 14, 1971, 13:05 UTC
Mass: 5,700 kg
NSSDC ID: 1970-095A
Webpage: NASA NSSDC Master Catalog (http://nssdc.gsfc.nasa.gov/database/MasterCatalog?sc=1970-095A)
Orbital elements
Semimajor Axis: n/a
Eccentricity: n/a
Inclination: n/a
Orbital Period: n/a
Apogee: n/a
Perigee: n/a
Orbits: n/a
Lunar Landing: November 17, 1970, 03:46:50 UTC
Landing
coordinates:
38°17' N, - 35° W.
Distance traveled: 10,540 meters
Instruments
Imaging system : Lunar photography
X-ray spectrometer :
Penetrometer : Lunar surface strength
Laser reflector : Lunar - earth distance
Radiation detectors : Lunar radiation environment
X-ray telescope :
Odometer/Speedometer :

Luna 17 was an unmanned space mission of the Luna program, also called Lunik 17. Luna 17 was launched from an earth parking orbit towards the Moon and entered lunar orbit on November 15, 1970. The spacecraft softly landed on the Moon in the Sea of Rains. The spacecraft had dual ramps by which the payload, Lunokhod 1, descended to the lunar surface. Lunokhod 1 was a lunar vehicle formed of a tub-like compartment with a large convex lid on eight independently powered wheels. Lunokhod was equipped with a cone-shaped antenna, a highly directional helical antenna, four television cameras, and special extendable devices to impact the lunar soil for soil density and mechanical property tests. An x-ray spectrometer, an x-ray telescope, cosmic-ray detectors, and a laser device were also included. The vehicle was powered by a solar cell array mounted on the underside of the lid. Lunokhod was intended to operate through three lunar days but actually operated for eleven lunar days. The operations of Lunokhod officially ceased on 4 October 1971, the anniversary of Sputnik 1. Lunokhod had traveled 10,540 m and had transmitted more than 20,000 television pictures and more than 200 television panoramas. It had also conducted more than 500 lunar soil tests.

Luna 17 continued the spate of successes in Soviet lunar exploration begun by Luna 16 and Zond 8. Luna 17 carried Lunokhod 1, the first in a series of robot lunar roving vehicles whose conception had begun in the early 1960s, originally as part of the piloted lunar landing operations. This was the second attempt to land such a vehicle on the Moon after a failure in February 1969. The descent stage was equipped with two landing ramps for the “ascent stage,” that is, the rover, to disembark onto the Moon’s surface. The 756-kilogram rover stood about 1.35 meters high and was 2.15 meters across. Each of its eight wheels could be controlled independently for two forward and two reverse speeds. Its top speed was about 100 meters per hour, with commands issued by a five-man team of “drivers” on Earth who had to deal with the 5- second delay. The set of scientific instruments was powered by solar cells (installed on the inside of the hinged top lid of the rover) and chemical batteries. After two midcourse corrections en route to the Moon, Luna 17 entered lunar orbit and then landed on the lunar surface at 03:46:50 UT on 17 November 1970 at 38°17' north latitude and 35° west longitude, about 2,500 kilometers from the Luna 16 site in the Sea of Rains. The Lunokhod 1 rover rolled over the ramps and onto the lunar surface at 06:28 UT. The rover had an expected lifetime of three lunar days but operated for eleven. During its 322 Earth days of operation, the rover traveled 10.54 kilometers and returned more than 20,000 TV images and 206 high-resolution panoramas. In addition, Lunokhod 1 performed twenty-five soil analyses with its RIFMA x-ray fluorescence spectrometer and used its penetrometer at 500 different locations. Controllers finished the last communications session with Lunokhod 1 at 13:05 UT on 14 September 1971. Attempts to reestablish contact were finally discontinued on 4 October.

  • Launch Date/Time: 1970-11-10 at 14:44:01 UTC
  • On-orbit dry mass: 5600 kg

See also


Preceded by :
Luna 16
Luna program Followed by :
Luna 18
  1. REDIRECT Template:PD-USGov-NASA
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