This is a cesium ion engine developed by the Electro-Optical Systems, Inc. as an experimental high-energy thruster for spacecraft. Ion engines produce extremely low thrusts over long periods of time, using electrically charged particles ejected out of the rear as a stream to provide thrust. This engine was successfully tested twice in space in flights of Air Force Blue Scout missiles in October and December 1964.
During the flights, each engine, weighing about five pounds, was carried to a maximum altitude of 1,200 nautical miles and produced thrusts of about .002 pounds (0.009 kilograms) for over two hours.
This engine was donated to the Smithsonian by Electro-Optical Systems in 1965.
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
1964
Country of Origin
United States of America
Type
PROPULSION-Rocket Engines
Manufacturer
Electro-Optical Systems, Inc.
Dimensions
3-D (Approximate, Diameter x Depth): 39.4 × 58.4cm (15 1/2 × 23 in.)
Storage (Wooden Crate): 105.4 × 125.7 × 157.5cm, 177.8kg (41 1/2 × 49 1/2 × 62 in., 392lb.)
Materials
Stainless Steel
Aluminum
Plastic
Gold Plating
Cadmium Plating
Steel
Copper Alloy
Inventory Number
A19650290000
Credit Line
Ellectro-Optical Systems, Inc.
Data Source
National Air and Space Museum
Restrictions & Rights
Usage conditions apply
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