VI ATIO April 6, 1925 376 AVIATION April 6, 1925 building their flying machines. Surely the wind tunnel should approach to such a type. A machine is conceivable with, say, now be called upon for investigating stability, windmill ac- si* small independent power units. On descent, reliance could … The future of the helicopter, unless it undergoes radical prove disappointing. In spite of these difficulties, it may be development, therefore lies not in competition with the air- developed because it does not involve the disadvantage of plane, but in its ability to perform certain functions…
Aviation Week
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