EntityQ522644· pop 9· linked from 41 articlesSABRESign in to saveHybrid ramjet and rocket engineConnectionsstaged combustion cycleEntityHOTOLEntityLAPCATEntityAviation Week & Space TechnologyEntityReaction Engines LimitedEntityUnited KingdomCountryEuropean UnionConceptcopperEntitygeometryEntityheliumEntitynickelEntityBBCConceptatmosphere of EarthEntityWayback MachineEntityEuropean Space AgencyEntityorbitEntitySpace ShuttleEntityentropyEntityEuropean CommissionEntityatmospheric pressureEntityCategoriesJet enginesPre-cooled air-breathing rocket enginesProposed enginesRamjet enginesRocket engines of the United KingdomRocket engines using hydrogen propellantRocket engines using the staged combustion cycle