EntityQ640087· pop 11· linked from 280 articlesXB-30Sign in to saveproposed heavy bomber aircraftConnectionsLockheed AH-56 CheyenneEntityLockheed A-12EntityLockheed VenturaEntityNazi GermanyConceptmachine gunEntityBoeingEntityCharles LindberghEntityUnited States Air ForceEntityGeneral Dynamics F-16 Fighting FalconEntityLockheed Martin F-22 RaptorEntityLockheed Martin F-35 Lightning IIConceptNorthrop B-2 SpiritConceptBoeing B-52 StratofortressConceptLockheed MartinEntityLockheed C-130 HerculesEntityBoeing B-17 Flying FortressEntityLockheed F-117 NighthawkEntityBoeing B-29 SuperfortressEntityRockwell B-1 LancerConceptLockheed SR-71 BlackbirdEntityCategoriesAircraft with retractable tricycle landing gearCancelled military aircraft projects of the United StatesFour-engined piston aircraftFour-engined tractor aircraftLockheed aircraftLockheed ConstellationLow-wing aircraftTriple-tail aircraft