Navigation set AN/APN-130 developed by Ryan Electronics Div permits sustained precise automatic hovering and accurate navigation under all conditions in flight; continuous wave doppler system is designed as all-weather ground velocity indicator for helicopters, airships, and aircraft having hovering and negative speed capabilities and operating in frequency band at 13,300 Mc; set embodies advanced transistorization and etched wiring techniques.
Navigation and hovering system for helicopters
Am Helicopter
American Helicopter ; 54 , n 7
1960
Article (Journal)
English
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