On August 29, 1947, the McDonnell XH-20 "Little Henry" made its first flight, becoming the world’s first helicopter powered by tip-mounted ramjet engines. The tip jets were incredibly loud, so it's a shame this old MD newsreel footage doesn't have any sound. ☹️🔇 Designed as an experimental rotorcraft for the United States Army Air Forces (it would not become the USAF for another three weeks), the XH-20 featured a distinctive approach to vertical flight: rather than relying on a central engine a
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On August 29, 1947, the McDonnell XH-20 "Little Henry" made its first flight, becoming the world’s first helicopter powered by tip-mounted ramjet engines. The tip jets were incredibly loud, so it's a shame this old MD newsreel footage doesn't have any sound. ☹️🔇 Designed as an experimental rotorcraft for the United States Army Air Forces (it would not become the USAF for another three weeks), the XH-20 featured a distinctive approach to vertical flight: rather than relying on a central engine a
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