Object Details
- Manufacturer
- Aerojet General Corp.
- Summary
- The LR91 was the second stage engine for the two-stage Titan I, which was a U.S. Air Force Intercontinental Ballistic Missile (ICBM). Titan I was conceived in 1954 to close the "missile gap" between the U.S. and Soviet Union. Although the Atlas ICBM was already under development, the USAF authorized Titan as a backup.
- Developed by Aerojet-General, the LR91-AJ-1 engine produced 80,000 pounds of thrust and had a burn time of 160 seconds. Its propellants were liquid oxygen and RP-1, a type of kerosene. The LR91 featured a turbopump, a regeneratively-cooled thrust chamber assembly, and an asbestos-based ablative skirt. LR91 testing began in 1956.
- The first successful flight of Titan I was in 1959 from Cape Canaveral. It became operational in 1962 and was deployed in five U.S. states. Because Titan II was more advanced, Titan I was deactivated in 1965.
- The U.S. Air Force transferred this engine to the Smithsonian in 1969.
- Credit Line
- Transferred from the U.S. Air Force
- Inventory Number
- A19721010000
- Restrictions & Rights
- Usage conditions apply
- Type
- PROPULSION-Rocket Engines
- Materials
- Aluminum, Steel, Fiberglass, Rubber (Silicone), Stainless Steel, Plastic, Paper, Paint, Magnesium, Adhesive
- Dimensions
- Overall: 4ft 8 1/2in. x 4ft 9in. x 5ft 9in. x 2ft 11 1/2in., 4700lb. (143.51 x 144.78 x 175.26 x 90.17cm, 2131.9kg)
- Country of Origin
- United States of America
- See more items in
- National Air and Space Museum Collection
- Location
- National Air and Space Museum in Washington, DC
- Exhibition
- Nation of Speed
- National Air and Space Museum
- Record ID
- nasm_A19721010000
- GUID (Link to Original Record)
- http://n2t.net/ark:/65665/nv9bd92f846-69e9-4002-a5d2-ef3a94fd191e
