EntityQ749370· pop 13· linked from 316 articlesLockheed Martin X-55Sign in to saveexperimental twinjet transport aircraftConnectionsLockheed AH-56 CheyenneEntityLockheed A-12Entitylist of X-planesEntityLockheed VenturaEntityUnited States Air ForceEntityGeneral Dynamics F-16 Fighting FalconEntityLockheed Martin F-22 RaptorEntitychief executive officerEntityLockheed Martin F-35 Lightning IIConceptLockheed MartinEntityLockheed C-130 HerculesEntityPalmdaleEntityBoeing B-17 Flying FortressEntityLockheed F-117 NighthawkEntityOrion (spacecraft)ConceptLockheed SR-71 BlackbirdEntitycomposite materialEntityLockheed U-2EntityheadquartersEntityBethesdaEntityCategories2000s United States experimental aircraftAircraft first flown in 2009Aircraft with retractable tricycle landing gearAir Force Research Laboratory projectsHigh-wing aircraftLockheed Martin aircraftT-tail aircraftTwinjets