Rocket Engine, Liquid Fuel, Surveyor Vernier, also Designated TD-339
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This is a vernier rocket motor for the Surveyor unmanned lunar landing probe, America's first spacecraft to soft-land on the Moon. It provided small bursts of thrust for mid-course trajectory correction maneuvers and attitude and velocity control before and during the landing. It produced 30-104 pounds of thrust. For protection from solar radiation, exposed surfaces were coated with very thin gold plate.
The Reaction Motors Division of the Thiokol Chemical Corporation developed the vernier which was first used operationally on Suveyor 1 that soft-landed on the Moon in 1966. Five Surveyors out of seven launched were successfully landed on the Moon up to 1968.
The motor was donated to the Smithsonian by the Jet Propulsion Lab in 1970.
Display Status
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
Object Details
Date
ca. 1963-1968
Country of Origin
United States of America
Type
PROPULSION-Rocket Engines
Manufacturer
Reaction Motors Div., Thiokol Chemical Corp. Dimensions
3-D: 33.5 × 21.6 × 14cm, 2.9kg (1 ft. 1 3/16 in. × 8 1/2 in. × 5 1/2 in., 6.4lb.) Materials
Steel
Plastic
Aluminum
Synthetic
Inorganics
Glass
Copper Alloy
Coating
Unknown Metal
Textile Inventory Number
A19700233000
Credit Line
Transferred from the National Aeronautics and Space Administration
Data Source
National Air and Space Museum
Restrictions & Rights
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