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XHJD-1 Whirlaway and XH-20 Little Henry on St. Louis Flight Ramp

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XH-20 "Little Henry" Hovers on McDonnell Flight Ramp

Sponsored by the U.S. Army Air Forces/U.S. Air Force, the McDonnell XH-20 Little Henry proved that helicopters could fly using ramjets located in the tips of their rotor blades. The tip-driven rotor eliminated the need for a torque-compensating tail rotor. It did not need a transmission and was controlled with a rudder. The XH-20 was a low-cost research prototype employing open-frame, steel-tube construction. Little Henry was not a success because ramjets were too noisy and used too much fuel, so only two test models were built. One of the XH-20s is on display at the National Museum of the U.S. Air Force at Wright-Patterson Air Force Base, Ohio.

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Unique identifier BI41753

Boeing ID D4E-11169

Type Image

Size 4000px × 3145px 12MB

License type RM