The Lockheed XV-4 Hummingbird was one of America’s most ambitious VTOL aircraft projects of the 1960s. Built to test vertical take-off and landing technology, it promised innovation but ended in tragedy after both prototypes were destroyed. In this video, we uncover the full history of the XV-4 Hummingbird, its experimental design, test flights, crashes, and its legacy in modern jets like the F-35B. Discover how this forgotten aircraft shaped the future of aviation.00:00 – Intro Retro Transport00:05 – Lockheed XV-4 Hummingbird History02:57 – Outro Retro Transport#RetroTransport #LockheedXV4 #Lockheed #Hummingbird #VTOL #Aircraft #Aviation #ExperimentalAircraft #AviationHistory #Harrier #JetAircraft #Aerospace