Reaction Motors XLR99

E106917 UNEXPLORED

The Reaction Motors XLR99 was a pioneering throttleable, restartable liquid-fuel rocket engine that powered the North American X-15 research aircraft to record-breaking speeds and altitudes during the early space age.


Referenced by (2)
Subject (surface form when different) Predicate
North American X-15
engineModel
Reaction Motors XLR11
successor

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