LR89

Rocketdyne LR89 at the Evergreen Aviation & Space Museum

The Rocketdyne LR89 was a liquid-fueled rocket engine developed in the 1950s by Rocketdyne, a division of North American Aviation. It was designed to serve as a booster engine the Atlas rocket family.[1][2][3][4] The LR89 was a liquid oxygen (LOX) and RP-1 (kerosene) engine.[5]

It was used in configurations where it worked alongside the LR105 sustainer engine to enhance thrust in the first stage of the Atlas, being jettisoned when the vehicle weight had been considerably reduced due to propellant consumption.[5][6]

  1. ^ "Rocket Engine Evolution". National Museum of the USAF.
  2. ^ "Technical Manual: Rocket Engine, USAF Model LR89-NA-5 (Rocketdyne)". National Air and Space Museum. Retrieved 2024-10-13.
  3. ^ "LR-89 (Atlas Booster) Engine". heroicrelics.org. Retrieved 2024-10-13.
  4. ^ Sutton, George P.; Biblarz, Oscar (2016). Rocket Propulsion Elements (9th ed.). John Wiley & Sons.
  5. ^ a b "Rocket Propulsion Evolution:5 - Atlas Missile". www.enginehistory.org. Retrieved 2024-10-13.
  6. ^ "LR-89 (Atlas Booster) Rocket Engine Injector". heroicrelics.org. Retrieved 2024-10-13.