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.
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This article is an automated import of the Wikipedia article "S5.92", available at https://en.wikipedia.org/wiki/S5.92 . Text is licensed under CC BY-SA 4.0.