Encyclopedia Astronautica

Aerojet Nitric acid/Amine rocket engine. GAPA. Launch thrust 4.41 kN. Development begun March 1947. Boeing surface-to-air missile, which would evolve into Bomarc and reach IOC in 1959.

Application: GAPA.

Thrust (sl): 4.410 kN (991 lbf). Thrust (sl): 450 kgf. Propellant Formulation: Nitric acid/Aniline.

Thrust: 4.41 kN (991 lbf).
First Launch: March 1947.

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Associated Countries
See also
Associated Launch Vehicles
  • Bomarc USAF Mach 3 ramjet surface-to-air missile; later converted to target missiles and launched from Vandenberg AFB. More...

Associated Manufacturers and Agencies
  • Aerojet American manufacturer of rockets, spacecraft, and rocket engines. Aerojet, Sacramento, CA, USA. More...

Associated Propellants
  • Nitric acid/Amine Drawing on the German World War II Wasserfall rocket, nitric acid (HNO3) became the early storable oxidiser of choice for missiles and upper stages of the 1950's. To overcome various problems with its use, it was necessary to combine the nitric acid with N2O4 and passivation compounds. These formulae were considered extremely secret at the time. By the late 1950's it was apparent that N2O4 by itself was a better oxidiser. Therefore nitric acid was almost entirely replaced by pure N2O4 in storable liquid fuel rocket engines developed after 1960. Early storable rocket systems sought to improve ignition characteristics and perforamance by eliminating the kerosene portion of the fuel. An amine is an organic compound produced when one or more hydrogen atoms of ammonia is replaced with organic groups. Mixed amine fuels were first developed by the Germans in World War II. TONKA-250, developed for the Wasserfall rocket, was used by the Russians after the war in various engines under the specification TG-02. More...

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