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2 091 739

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C1

(51)

IPC

(21) (22)

Application

93030519/28, 1993-06-10

(22)

Actual filing date

1993-06-10

(45)

Published

1997-09-27

(72)

Inventor

Voronkov A.Z.Kolmakov V.V.Trifonova N.A.

(73)

Holder

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

SERVICE LIFE TEST STAND FOR POWER PLANT MEMBERS OF HELICOPTER WITH COAXIAL ROTORS Russian patent published in 1997 - IPC

Abstract RU 2091739 C1

FIELD: testing facilities. SUBSTANCE: cardan frame hinge connected with base and compartment of power plant with coaxial rotors and power plant compartment are connected with base through shock absorbers. Each pair of shock absorbers is connected with base and cardan frame (compartment) by means of hinge joints with two degrees of freedom. One of axes of pair of hinge joints connecting shock absorbers with base and cardan frame coincides with axis of hinged connections of frame and base, and one of axes of other pair of hinge joints with two degrees of freedom coincides with axis hinge connection of frame and compartment. EFFECT: improved stability of stand to ground resonance self-sustained oscillations, prevention of collision of power plant compartment and stand structural members. 1 dwg

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RU 2 091 739 C1

Authors

Voronkov A.Z.

Kolmakov V.V.

Trifonova N.A.

Dates

1997-09-27—Published

1993-06-10—Filed

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