METHOD OF DETERMINATION OF UNBALANCE OF HELICOPTER MAIN ROTORS Russian patent published in 2002 - IPC

Abstract RU 2194959 C1

FIELD: aeronautical engineering; estimation of unbalance of helicopter main rotors secured on fuselage at different height. SUBSTANCE: unbalance of each main rotor is determined through successive measurement of fuselage vibration amplitude in hovering mode due to unbalance of main rotors and setting on one of rotors longitudinal and transversal test unbalance in turn; unbalance is determined by mathematical expression given in Specification. EFFECT: possibility of estimating unbalance for each main rotor. 3 dwg

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RU 2 194 959 C1

Authors

Voronkov A.Z.

Petukhov B.A.

Dates

2002-12-20—Published

2001-08-24—Filed