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The RD-856 (Russian: Ракетный Двигатель-856, romanized: Raketnyy Dvigatel-856, lit. 'Rocket Engine 856', GRAU index: 8D69M), also known as the RD-69M, is a four-nozzle liquid-fuel rocket vernier engine, burning a hypergolic mixture of unsymmetrical dimethylhydrazine (UDMH) fuel with dinitrogen tetroxide (N2O4) oxidizer in a gas generator cycle. It was…
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engine r-36 tsyklon-3 soviet tsyklon-2 rocket structure 1965 udmh also tsyklon-4 design bureau vernier mixture n2o4 gas generator cycle second
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| RD-856 | Application | Vernier | 1.00 | infobox |
| RD-856 | Associated LV | R-36, Tsyklon-2 and Tsyklon-3 | 1.00 | infobox |
| RD-856 | Burn time | Up to 163 s | 1.00 | infobox |
| RD-856 | Chamber | 4 | 1.00 | infobox |
| RD-856 | Chamber pressure | 7.160 MPa (1,038.5 psi) | 1.00 | infobox |
| RD-856 | Country of origin | Soviet Union | 1.00 | infobox |
| RD-856 | Cycle | Gas generator | 1.00 | infobox |
| RD-856 | Designer | Yuzhnoye Design Bureau | 1.00 | infobox |
| RD-856 | Diameter | 3.35 m (11.0 ft) | 1.00 | infobox |
| RD-856 | Dry mass | 112.5 kg (248 lb) | 1.00 | infobox |
| RD-856 | First flight | December 16, 1965 | 1.00 | infobox |
| RD-856 | Gimbal range | ±30° | 1.00 | infobox |
| RD-856 | Last flight | January 30, 2009 | 1.00 | infobox |
| RD-856 | Length | 0.9 m (2 ft 11 in) | 1.00 | infobox |
| RD-856 | Manufacturer | Yuzhmash | 1.00 | infobox |
| RD-856 | Mixture ratio | 1.98 | 1.00 | infobox |
| RD-856 | Propellant | .mw-parser-output .template-chem2-su{display:inline-block;font-size:80%;line-height:1;vertical-align:-0.35em}.mw-parser-output .template-chem2-su>span{display:block;text-align:l… | 1.00 | infobox |
| RD-856 | Restarts | 1 | 1.00 | infobox |
| RD-856 | Specific impulse, vacuum | 280.5 s (2.751 km/s) | 1.00 | infobox |
| RD-856 | Status | Out of production | 1.00 | infobox |
| RD-856 | Thrust, vacuum | 54.23 kN (12,190 lbf) | 1.00 | infobox |
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