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Lox/Hydyne

Redstone engine

Redstone engine
Credit: NASA

Lox/Hydyne propellant. Liquid oxygen was the earliest, cheapest, safest, and eventually the preferred oxidizer for large space launchers.Hydyne was a propellant blend pushed rather vigorously by the Redstone arsenal in the late 1950's, but it found little application. Hydyne was a 60 per cent, by weight, mixture of UDMH and 40 weight percent diethyltrianine (DETA).

Specific impulse: 359 s. Specific impulse sea level: 306 s.

Optimum Oxidizer to Fuel Ratio: 1.73. Temperature of Combustion: 3,585 deg K. Density: 1.02 g/cc. Oxidizer Density: 1.140 g/cc. Oxidizer Freezing Point: -219 deg C. Oxidizer Boiling Point: -183 deg C. Fuel Density: 0.860 g/cc. Fuel Freezing Point: -84 deg C. Fuel Boiling Point: 64 deg C.



Subtopics

A-7 Rocketdyne LOx/Hydyne rocket engine. Out of Production. Version of Redstone engine for Jupiter-C test vehicle, with Hydyne fuel and 140 seconds burn time. Flew 1956-1959. Gas generator, pump-fed. Thrust 370 kN at sea level.

Jupiter C stage LOx/Hydyne propellant rocket stage. Redstone missile, stretched, modified with different propellants to serve as first stage of IRBM nose cone/orbital test vehicle.

Engines: A-7. Stages: Jupiter C stage.

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