Rocketdyne A-7
E1023208
The Rocketdyne A-7 was a liquid-fueled rocket engine developed in the 1950s that powered early U.S. Redstone-based launch vehicles used in missile tests and pioneering space missions.
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
liquid-fueled rocket engine
ⓘ
rocket engine ⓘ |
| chamberPressure | approximately 4.1 MPa ⓘ |
| coolingMethod | regenerative cooling ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| cycleType | gas-generator cycle ⓘ |
| developedFor | Redstone missile program NERFINISHED ⓘ |
| developmentStartDate | 1950s ⓘ |
| diameter | approximately 1.5 m ⓘ |
| firstCrewedFlightPowered | Mercury-Redstone 3 Freedom 7 GENERATED ⓘ |
| fuel |
alcohol-water mixture
ⓘ
ethyl alcohol ⓘ |
| gimbalCapability | engine could be gimbaled for thrust vector control ⓘ |
| heritage | derived from German V-2 engine technology ⓘ |
| ignitionSystem | pyrotechnic ignition ⓘ |
| length | approximately 3.4 m ⓘ |
| manufacturer | Rocketdyne NERFINISHED ⓘ |
| mass | approximately 1,000 kg ⓘ |
| mountingLocation | first stage of Redstone-based launch vehicles ⓘ |
| notableAchievement | powered first American in space ⓘ |
| oxidizer | liquid oxygen ⓘ |
| powered |
Freedom 7 mission
NERFINISHED
ⓘ
Liberty Bell 7 mission NERFINISHED ⓘ early Redstone test flights ⓘ early U.S. suborbital crewed flights ⓘ |
| propellantFeedSystem | turbopump-fed ⓘ |
| propellantType | liquid propellant ⓘ |
| serviceEntryDate | mid-1950s ⓘ |
| specificImpulseSeaLevel | approximately 216 s ⓘ |
| specificImpulseVacuum | approximately 247 s ⓘ |
| status | retired ⓘ |
| thrustSeaLevel |
approximately 334 kN
ⓘ
approximately 75,000 lbf ⓘ |
| thrustVacuum |
approximately 350 kN
ⓘ
approximately 78,000 lbf ⓘ |
| usedBy |
NASA
NERFINISHED
ⓘ
U.S. Army NERFINISHED ⓘ |
| usedFor |
ballistic missile tests
ⓘ
launch vehicle first stages ⓘ suborbital space missions ⓘ |
| usedIn |
Juno I launch vehicle
NERFINISHED
ⓘ
Jupiter-C launch vehicle NERFINISHED ⓘ Mercury-Redstone 3 NERFINISHED ⓘ Mercury-Redstone 4 NERFINISHED ⓘ Mercury-Redstone launch vehicle NERFINISHED ⓘ PGM-11 Redstone NERFINISHED ⓘ Redstone missile NERFINISHED ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Jupiter-C