ly ;ight of 150 meters, Mr. Sperrymade two demonstrations ofautomatic volplaning. It iswell known that in order toexecute a volplane, the avia-tor must allow his aeroplaneto dive abruptly so as toregain the speed that thestopping of the motor hascaused him to lose. Wouldthe Sperry apparatus be… … never fail to bring back the machine to a hori-zontal plane. The entire outfit weighs about 40pounds. The tests I have described indicate re-markable progress towards the solution of one ofthe most wonderful problems of the age, that ofsafe human flight. They prove that we now havethe means of…
Aeronautics
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