Lights for western half of transcontinental and other western airways purchased by Department of Commerce, Aeronautics Branch; intermediate landing fields 30 mi. apart and beacon lights approximately 10 mi. apart; searchlight beacons fitted with 24-in. parabolic mirror and 1000-watt airway lamps developing 2,000,000 cp.; revolving mechanism motor driven.
Airway lighting
Popular Aviation
Popular Aviation and Aeronautics ; 3 , n 1
1928
Aufsatz (Zeitschrift)
Englisch
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Engineering Index Backfile | 1928
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