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A retrorocket (short for retrograde rocket) is a rocket engine providing thrust opposing the motion of a vehicle, thereby causing it to decelerate. They have mostly been used in spacecraft, with more limited use in short-runway aircraft landing. New uses are emerging since 2010 for retro-thrust rockets in reusable launch systems.
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rockets spacecraft used orbit vehicle uses retrorockets project reusable launch systems stage engine aircraft slow landing new apollo space war
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| the Titan II | instance of | multistage rockets | 0.80 | text |
| Saturn I | instance of | multistage rockets | 0.80 | text |
| Saturn IB | instance of | multistage rockets | 0.80 | text |
| and Saturn V may have small retrorockets on lower stages | instance of | multistage rockets | 0.80 | text |
| which ignite upon stage separation | instance of | multistage rockets | 0.80 | text |
| Retrorocket | related to Deorbit maneuvers | When | 0.60 | section |
| Retrorocket | related to Deorbit maneuvers | Without | 0.60 | section |
| Retrorocket | related to Deorbit maneuvers | Therefore | 0.60 | section |
| Retrorocket | related to Landers | Retrorockets | 0.60 | section |
| Retrorocket | related to Landers | Moon | 0.60 | section |
| Retrorocket | related to Landers | Mars | 0.60 | section |
| Retrorocket | related to Landers | As | 0.60 | section |
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