🌐EnglishEnglishFrançaisItalianoNederlandsالعربيةفارسی中文日本語EntityQ3878577· pop 5· linked from 75 articlesNorthrop Grumman Switchbladetype of aircraftConnectionsUnited StatesCountryUnited States dollarEntityNASACategoriesAbandoned military aircraft engine projects of the United StatesDARPANorthrop Grumman aircraftOblique-wing aircraftTailless aircraftTwinjetsUnmanned aerial vehicles of the United StatesVariable-sweep-wing aircraft