EntityQ6043136· pop 5· linked from 10 articlesIntegrated powerhead demonstratorSign in to saveU.S. Air Force project in the 1990s and early 2000sConnectionsstaged combustion cycleEntityAir Force Research LaboratoryEntityNASAConceptWikisourceEntityUnited States Air ForceEntityFederal Government of the United StatesEntityrocket engineEntityNorthrop Grumman CorporationEntityliquid hydrogenEntityMarshall Space Flight CenterEntityball bearingEntityfinancial capitalEntityAerojetCompanyAerojet RocketdyneCompanyfluid bearingEntityRocketdyneCompanyCategoriesRocketdyne enginesRocket engines of the United StatesRocket engines using full flow staged combustion cycleRocket engines using hydrogen propellant