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2 768 292

(13)

(51)

IPC

B63H1/15(2006-01-01)

F16F7/10(2006-01-01)

(21) (22)

Application

2020138566, 2020-11-24

(24)

Start date

2020-11-24

(22)

Actual filing date

2020-11-24

(45)

Published

2022-03-23

(72)

Inventor

Grushetskij Igor ViktorovichShlemov Yurij FedorovichSavenko Valentin ViktorovichPetrov Aleksandr AleksandrovichMalinin Ivan OlegovichYakovleva Elena VladimirovnaDobrynin Dmitrij GennadevichSemkin Vasilij Georgievich

(73)

Holder

Rossijskaya Federatsiya, Ot Imeni Kotoroj Vystupaet Ministerstvo Promyshlennosti I Torgovli Rossijskoj Federatsii

SCREW PROPELLER WITH MULTI-RESONANT DAMPING DEVICE FOR REDUCING OSCILLATIONS AND RESONANT SOUND EMISSION OF SCREW PROPELLER Russian patent published in 2022 - IPC B63H1/15 F16F7/10

Abstract RU 2768292 C1

FIELD: shipbuilding.

SUBSTANCE: screw propeller contains a damping device consisting of layered plates separated by free gaps. The lowest resonant frequency of each of plates coincides with one of resonant frequencies of the screw propeller. Plates include layers of metal and vibration damping material between them. Plates are installed coaxially on a single rod support. The damping device is installed in a cylindrical cavity in a blade of the screw propeller. The rod support is fixed in the cylindrical cavity between the blade and the cover of the cylindrical cavity. Layered plates have the same diameter, but different thickness.

EFFECT: increase in the efficiency of the damping device on several resonant frequencies of high-order oscillation modes of the screw propeller.

3 cl, 3 dwg

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RU 2 768 292 C1

Authors

Grushetskij Igor Viktorovich

Shlemov Yurij Fedorovich

Savenko Valentin Viktorovich

Petrov Aleksandr Aleksandrovich

Malinin Ivan Olegovich

Yakovleva Elena Vladimirovna

Dobrynin Dmitrij Gennadevich

Semkin Vasilij Georgievich

Dates

2022-03-23—Published

2020-11-24—Filed