Notes on application of sonic methods to air; successful application to sea depth sounding described.
Echo altimeter
Flight
Flight ; 37 , n 1620
1940
2 pages
Aufsatz (Zeitschrift)
Englisch
© Metadata Copyright Elsevier B. V. All rights reserved.
Wireless altimeter -- "Echo sounding" for aircraft
Engineering Index Backfile | 1939
Radio-echo altimeter protects and guides aviator
Engineering Index Backfile | 1929
NTRS | 1972