EntityQ2908541· pop 8· linked from 34 articlesBoeing Model 360Sign in to saveAmerican experimental helicopterConnectionsBoeing CH-47 ChinookEntityBell/Boeing V-22 OspreyEntityRAH-66 ComancheEntityBoeing Vertol CH-46 Sea KnightEntityT55EntityNASAConceptInternational Standard Book NumberEntityhelicopterEntityHughes AH-64 ApacheEntityWest ChesterEntityturboshaftEntityglass cockpitEntityH-21 ShawneeEntityApache AH1EntityV speedEntityaerospace manufacturerEntitySB-1 DefiantEntityPiasecki HRP RescuerEntityPiasecki HUP RetrieverEntityBoeing Rotorcraft SystemsEntityCategories1980s United States experimental aircraft1980s United States helicoptersAircraft first flown in 1987Boeing aircraftTandem rotor helicoptersTwin-turbine helicopters