Problems in airway lighting are taken up, and methods of research which are being applied to their solution are described; study of distance at which beacon is visible; lower candlepower beacons placed at more frequent spacings; longer flash periods; color research.
Controlling the effectiveness of airway beacons
Airports
Airports ; 2 , n 6
1929
1 Fig.
Article (Journal)
English
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Engineering Index Backfile | 1929
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