S5.92
Sign in to saveThe S5.92 is a Russian rocket engine, currently used on the Fregat upper stage. It burns a hypergolic mixture of unsymmetrical dimethylhydrazine (UDMH) fuel with dinitrogen tetroxide (N2O4) oxidizer in a gas-generator cycle.
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- Design
- History
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The S5.92 is a Russian rocket engine, currently used on the Fregat upper stage. It burns a hypergolic mixture of unsymmetrical dimethylhydrazine (UDMH) fuel with dinitrogen tetroxide (N2O4) oxidizer in a gas-generator cycle.
==Design== The S5.92 has two throttle settings. The highest produces of thrust, a specific impulse of 327 seconds, and a 3-second ignition transient. The lower throttle level produces of thrust, specific impulse of 316 seconds, and a 2.5 second ignition transient. It is rated for 50 ignitions, and 300 days between ignitions.
Excerpted from Wikipedia’s “S5.92” article, available under the CC BY-SA 4.0 licence.