Altitude measurement and direction finding by acoustical methods; inadequacy of barometric altimeter; different methods of measuring altitude; causes of errors in acoustical methods; various systems discussed; new type of acoustical apparatus consisting of transmitter, receiver and chronograph; results of tests on airships, seaplanes and airplanes; utilization at airports for guidance of pilots. (See also - discussion p 490)
Sondage aerien et balisage des aeroports par signaux acoustiques
Sondage aerien et balisage des aeroports par signaux acoustiques
1933
21 pages
Report
French
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