RD-119
The RD-119 (from Russian Реактивный двигатель , "Reaktiwnyj Dwigatel", German rocket engine, GRAU index 8D710) was a Soviet upper stage engine for liquid rockets .
Development and use
The RD-119 was developed by the Soviet chief designer for rocket motors Valentin Gluschko in the period between 1958 and 1963 at the Leningrad Gas-Dynamics Laboratory on the basis of the RD-109 . In the Kosmos-2 rocket, it served as a drive for the second rocket stage and is optimized for operation in a vacuum. The first flight took place in the spring of 1962 and it was used until 1977.
technology
The RD-119 single-chamber engine was operated with UDMH and liquid oxygen (LOX). The unusually large expansion ratio of 1350 to 1 and the high specific impulse were characteristic of the engine . It included three pairs of control nozzles to control the missile's orbit.
Technical specifications
| RD-119 | |
|---|---|
| Mixing ratio kerosene / LOX | 1.5 |
| Total height | 2.17 m |
| diameter | 1.02 m |
| Dry matter | 168 kg |
| Mass / thrust ratio (vacuum) | 63.8 |
| Fuel throughput | 32 kg / s |
| Combustion chamber diameter | 210 mm |
| Nozzle throat diameter | 93 mm |
| Combustion chamber pressure | 79 bar |
| Vacuum thrust | 105 kN |
| Specific impulse (soil / vacuum) | 3450 Ns / kg |
Web links
Individual evidence
- ↑ RD-119 in the Encyclopedia Astronautica (English)
- ↑ Peter Stache: Russian missiles . ISBN 3-327-00302-5 .