Helicopter with stabilator detuned in antisymmetric vibration mo

Details Helicopter with stabilator detuned in antisymmetric vibration mo Helicopter with stabilator detuned in antisymmetric vibration mo

1978-07-12

1981-01-27

Kelmachter, Barry L.

Aeronautics and astronautics

Aircraft, heavier-than-air

Helicopter or auto-rotating wing sustained, i.e., gyroplanes

244 1711, 244 87, B64C 2700, B64C 510

Patent

active

042470617

ABSTRACT:
A helicopter stabilator having naturally high response to the main rotor wake excitation frequency in roll and yaw stabilator vibratory modes is selectively mounted so as to be detuned therefrom in antisymmetric stabilator vibratory modes without adversely affecting symmetric stabilator vibratory modes, stabilator vertical stiffness, or stabilator pitch stiffness.

REFERENCES:
patent: 3717317 (1973-02-01), Certain
patent: 4103848 (1978-08-01), Johnson et al.

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