2000 / 6 / 25 New.

McDonnell Douglas	Hughes XH-17 Pressure-Jet Helicopter
McDonnell Douglas	McDonnell XH-20 Little Henry Small Ramjet Helicopter Length : 3.8m Rotor Diameter : 5.49m Width : 2.52m Hight : 2.13m Wing Area : 95.69 Square meter Crew : 1
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