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Name of Image:
LR87
Full Description: The LR87is a liquid rocket engine, similar in
concept to the XLR99 and S-3D, but with significant differences. It is a
fixed thrust engine that cannot be throttled, and it is not restartable
in flight. The propellants are storable; they do not boil at normal
temperatures as liquid oxygen does so they can remain in their tanks for
extended periods of time. The engine delivers approximately 430,000 lbs.
of thrust using Aerozine-50 (fuel) that ignites on contact with nitrogen
tetroxide (oxidizer). Propellants such as these are termed "hypergolic."
The LR87 is essentially two engines working together because there are
two turbopumps and two thrust chambers, but it was often considered a
single engine that has two thrust chambers. This type of engine was used
on the Titan series of intercontinental ballistic missiles (ICBMs) and
space boosters. the Titan II, for example, was the launch vehicle for
the Gemini manned spacecraft program that followed Project Mercury.
Improved versions of the LR87 continued to be used in later Titan III,
Titan 34D, and Titan IV series of launch vehicles.
Source:
http://www.wpafb.af.mil/museum/engines/engine.htm
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