Contribution to experimental study of acoustical sounding by echos aboard noisy airplanes, for altitude finding. (See also - discussion p 322-9)
Contribution a l'etude experimentale du sondage acoustique par echos a bord d'aeronefs bruyants
Contribution a l'etude experimentale du sondage acoustique par echos a bord d'aeronefs bruyants
1932
7 pages
Report
French
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