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2 034 257

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C1

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IPC

(21) (22)

Application

4947295/23, 1991-06-24

(22)

Actual filing date

1991-06-24

(45)

Published

1995-04-30

(72)

Inventor

Voronkov A.Z.Sobol' S.B.

(73)

Holder

Vertoletnyj Nauchno-Tekhnicheskij Kompleks Im.N.I.Kamova

METHOD OF TESTING THE HELICOPTER ROTOR MEMBERS AND TEST STAND FOR ITS REALIZATION Russian patent published in 1995 - IPC

Abstract RU 2034257 C1

FIELD: aeronautical engineering. SUBSTANCE: method of testing the helicopter rotor members for "ground resonance" consists in subsequent loading first at frequency of rotation of rotor and then at frequency of "ground resonance" and rotation of rotor and determination of frequency of natural oscillations of blades, moments in lag hinge of hose of helicopter rotor hub and stiffness of composite bearing from relationship given in formulae of invention. Loading the blade is effected on stand which makes it possible to model loads acting on real blade fitted on helicopter. EFFECT: determination of stiffness of composite bearing of lag hinge of helicopter rotor hub. 3 cl, 3 dwg

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RU 2 034 257 C1

Authors

Voronkov A.Z.

Sobol' S.B.

Dates

1995-04-30—Published

1991-06-24—Filed

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