S5.92
| Country of origin | USSR |
|---|---|
| First flight | 1988-07-07 |
| Designer | KB KhIMMASH |
| Application | Upper Stage |
| Associated LV | Soyuz, Zenit |
| Status | In Production |
| Liquid-fuel engine | |
| Propellant | N2O4 / UDMH |
| Mixture ratio | 2.0 |
| Cycle | Gas Generator |
| Configuration | |
| Chamber | 1 |
| Performance | |
| Thrust, vacuum | 19.61 kilonewtons (4,410 lbf) |
| Chamber pressure | 9.61 megapascals (1,394 psi) |
| Specific impulse, vacuum | 327 seconds |
| Burn time | 2,000 seconds |
| Dimensions | |
| Length | 1,028 millimetres (40.5 in) |
| Diameter | 838 millimetres (33.0 in)(max) |
| Dry mass | 75 kilograms (165 lb) |
| Used in | |
| Fregat and Phobos program | |
| References | |
| References | |
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 the gas-generator cycle.