Impact simulation test device for engine double-rotor system

CN121720731APending Publication Date: 2026-03-24CHINESE FLIGHT TEST ESTAB
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-27
Publication Date
2026-03-24

AI Technical Summary

Technical Problem

The existing engine rotor system is difficult to assemble and dynamically balance, which leads to significant safety risks in impact simulation tests.

Method used

Design an impact simulation test device for a dual-rotor engine system. The low-pressure rotor shaft is supported by a 1-2-0 bearing, and the high-pressure rotor shaft is supported by a 1-0-1 bearing. A special "C"-shaped rear support structure is adopted. Combined with a non-coaxial brushless motor drive and a multi-section sensor arrangement, the dynamic characteristics are coupled and simulated.

Benefits of technology

It enables the study of the dynamic characteristics of a dual-rotor system under impact loads, has the ability to transmit external impact loads and rotor dynamic response, supports the selection of flight test measurement points and engine structure optimization design, and provides comprehensive data acquisition and recording.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses an impact simulation test device for an engine double-rotor system. The impact simulation test device comprises a low-pressure rotor shaft and a high-pressure rotor shaft nested outside the low-pressure rotor shaft in a non-contact manner, the low-pressure rotor shaft is installed in the casing in a 1-2-0 bearing supporting mode, and a low-pressure rotor rear bearing is installed between the rear end of the low-pressure rotor shaft and a bearing seat arranged in the casing through a reverse C-shaped rear supporting structure fixedly installed at the rear end of the low-pressure rotor shaft. The high-pressure rotor shaft is installed in the casing in a 1-0-1 bearing supporting mode, and an intermediate bearing installed at the rear end of the high-pressure rotor shaft and a low-pressure rotor rear bearing installed at the rear end of the low-pressure rotor shaft through an inverted-C-shaped rear supporting structure are located on the same section. According to the invention, the problem that large safety risks exist in the impact simulation test due to large assembly difficulty and difficult dynamic balance adjustment of the engine rotor system in the existing mode for carrying out the impact simulation test on the engine rotor system is solved.
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