20 Feet

Short flights of more than 20 feet in altitude were made at McCook Field, Dayton, by the De Bothezat helicopter, an airplane that rises vertically without a running start.

2,000 Feet

Provided any British helicopter (with pilot) attains an altitude of 2,000 feet--and, in addition, shows ability to hover and to remain stationary in the air for half an hour in a 20 mile wind--its inventor will receive a -L-50,000 prize, the British Air Ministry announced. A man in the British Royal Air Force walked slowly into a revolving airplane propeller and was instantaneously killed. Medical opinion attributes the accident to a curious form of hypnotism.