This one-quarter scale model represents the second generation, or "Block II" of satellites that make up the Navstar Global Positioning System, known as GPS. GPS is a US Defense-Department system designed to provide world wide, three-dimensional positioning information, 24 hours a day. Civil customers may also access the system at no charge.
The first generation, Block I, satellites were used as research vehicles to test the feasibility of the concept. A constellation of 24 Block II satellites make up the space segment of a fully operational system. The satellites were built by Rockwell International, which also built this scale model for exhibit purposes. Launches of Block II satellites began in 1989, and the Defense Department declared GPS fully operational in 1995. New generation systems are being developed and launched as GPS continues to evolve rapidly.
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
Country of Origin
United States of America
Type
MODELS-Uncrewed Spacecraft & Parts
Manufacturer
Rockwell International Corporation
Dimensions
Other: 1 ft. 6 in. tall x 2 ft. 1 in. long x 1 ft. 4 in. wide (45.7 x 63.5 x 40.6cm)
Other (solar panel): 1 ft. 5 in. long x 1 ft. 6 in. wide (43.2 x 45.7cm)
Materials
Covering - Gold-colored Foil
Structure - Wood
Inventory Number
A19970067000
Credit Line
Gift of the Rockwell International Corporation
Data Source
National Air and Space Museum
Restrictions & Rights
Usage conditions apply
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