The S5.98M, also known as the 14D30, is a Russian rocket engine, currently powering the Briz upper stages. It was designed by KB KhIMMASH, the famous Isaev designed bureau. 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 "S5.98M", available at https://en.wikipedia.org/wiki/S5.98M . Text is licensed under CC BY-SA 4.0.