Instrument, designed to provide vertical separation between aircraft in flight by relating flight altitude levels to compass directions, consists of aneroid barometer mechanism providing uniform measurement of pressure altitude from fixed standard reference pressure. (received Dec 1946)
Development of flight level indicator
U S Civ Aeronautics Administration -- Tech Development Report
1945
10 pages
Report
English
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Engineering Index Backfile | 1941
|Engineering Index Backfile | 1922
NTIS | 1965
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