Object Details
- Manufacturer
- Alleghany Ballistics Laboratory, Hercules Incorporated
- Summary
- This is the X248-A2 solid fuel rocket motor, also called Altair, that powered the third stage of the Vanguard III launch vehicle, launched in 1959. Altair was also used as the third stage of the Thor-Able-4 vehicle that launched the Pioneer V space probe and Tiros 1, the first weather satellite, and third stage for the Pioneer I, Explorer VI, and other launch vehicles.
- The motor, built by the Allegheny Ballistic Laboratory of Hercules Inc., produced 3,070 pounds of thrust and was made with a filament-wound fiber-reinforced epoxy resin. This very strong construction, plus the motor's high performance for its small weight, made it a pioneering development in solid fuel rocket technology. This object was donated to the Smithsonian in 1968 by the Alleghany Ballistics Lab.
- Credit Line
- Gift of Alleghany Ballistics Laboratory, Hercules Incorporated
- ca. 1956-1960 [for actual motor]; ca. mid-1960's
- Inventory Number
- A19680576000
- Restrictions & Rights
- Usage conditions apply
- Type
- PROPULSION-Rocket Engines
- Materials
- Casing, Spiralloy filament-wound fiberglass reinforced epoxy resin
- Dimensions
- Overall: 5 ft. long x 1 ft. 5 in. diameter, 203 lb. (152.4 x 43.18cm, 92.1kg)
- Country of Origin
- United States of America
- See more items in
- National Air and Space Museum Collection
- Location
- Steven F. Udvar-Hazy Center in Chantilly, VA
- Exhibit Station
- Rockets & Missiles
- National Air and Space Museum
- Record ID
- nasm_A19680576000
- GUID (Link to Original Record)
- http://n2t.net/ark:/65665/nv9163ec7d2-1383-4076-b5e1-2c66d77983ca
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