 The third stage rocket for the Europa II satellite launcher | |
| Country of origin | Germany |
|---|---|
| First flight | 1969-07-31 |
| Last flight | 1971-11-05 |
| Designer | ERNO Raumfahrttechnik GmbH |
| Manufacturer | Snecma |
| Application | Upper stage engine |
| AssociatedLV | Europa (rocket) |
| Status | Retired |
| Liquid-fuel engine | |
| Propellant | N2O4 /Aerozine 50 |
| Cycle | pressure fed[1] |
| Configuration | |
| Chamber | 1 |
| Performance | |
| Thrust, vacuum | 23.3 kilonewtons (5,200 lbf) |
| Thrust, sea-level | 19.6 kilonewtons (4,400 lbf) |
| Specific impulse, vacuum | 310 s (3.0 km/s) |
| Specific impulse, sea-level | 260 s (2.5 km/s) |
| Burn time | 330 seconds |
| Dimensions | |
| Dry mass | 68 kg (150 lb) |
| Used in | |
| Astris (rocket stage) | |
| References | |
| References | [2][3][4][5] |
TheAstris was aliquidrocket engine burning thehypergolic propellant combination ofAerozine 50 andN2O4.[2] A single engine poweredAstris third stage of the failedEuropa rocket.[6][3]
On November 29, 1968, its inaugural flight, the Astris third stage exploded. On the second attempt in July 1969, the Astris engine failed to start. On the third attempt on June 11, 1970, the stage performed correctly, but the fairing failed to separate.[3] On November 5, 1971, theEuropa II launched fromCSGELA-1, had a mishap due to structural failure of the third stage. After this last failure the project was definitely cancelled.[7]
| Liquid fuel |
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| Solid fuel |
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