Servo controlled system is designed to provide very low natural frequency of 2-3 cps; analyses conducted for helicopter equipped with this LF system at both rotors and for helicopter with standard rotor attachments; comparisons of predicted variation of 3/rev cockpit vibration with air speed for helicopter reveal that 2-3 cps active isolation of both rotors can result in reduction of between 6 and 10 to 1 in lateral, vertical and longitudinal in-flight cockpit vibration.
Active vibration isolation of helicopter rotors
Am Helicopter Soc -- J
American Helicopter Society -- Journal ; 7 , n 2
1962
14 pages
Aufsatz (Zeitschrift)
Englisch
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