HM7B
European rocket engine / From Wikipedia, the free encyclopedia
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The HM7B was a European cryogenic upper stage rocket engine used on the vehicles in the Ariane rocket family.[3] It will be replaced by Vinci, which will act as the new upper stage engine on Ariane 6.[4] Nearly 300 engines have been produced to date.[3]
Quick Facts Country of origin, First flight ...
Country of origin | France |
---|---|
First flight | 24 December 1979 |
Designer | Snecma |
Manufacturer | Snecma |
Application | Upper stage engine |
Associated LV | ESA |
Predecessor | HM4 |
Successor | Vinci |
Status | Retired |
Liquid-fuel engine | |
Propellant | Liquid oxygen / Liquid hydrogen |
Mixture ratio | 5.0 |
Cycle | Gas-generator |
Configuration | |
Chamber | 1 |
Nozzle ratio | 83.1 |
Performance | |
Thrust, vacuum | 62.2 kN (13,980 lbf)[1] |
Chamber pressure | 3.7 MPa (37 bar) |
Specific impulse, vacuum | 4.36 km/s (444.6 s) |
Dimensions | |
Length | 2.01 m |
Diameter | 0.992 m |
Dry weight | 165 kg |
Used in | |
References | |
References | [1][2] [3] |
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