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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2014, Vol. 35 ›› Issue (2): 391-399.doi: 10.7527/S1000-6893.2013.0266

• Fluid Mechanics and Flight Mechanics • Previous Articles     Next Articles

Construction and Application of Synchronized Test System of Multi-dynamic Parameters

WU Hui, YANG Mingsui, WANG Deyou, GAO Feilong, MEI Fan   

  1. AVIC Shenyang Engine Design and Research Institute, Shenyang 110015, China
  • Received:2013-04-22 Revised:2013-05-24 Online:2014-02-25 Published:2013-06-03
  • Supported by:

    National Level Project

Abstract:

Dynamical signal testing and analysis of multi-physical fields need to be conducted in the process of a compressor test, such as the aerodynamics field, vibration field and noise field. But those are isolatedly conducted tests and there are difficulties in realizing a synchronized test and unified analysis of signals. Many multi-physical field couplings cannot be described in detail because of the lack of a proper research method. In this paper, a new test method of multi-field dynamical signal synchronization is proposed, which provides a way to study coupling and it can be directly applied to engineering projects. The dynamical test technology concerning the study of dynamic and structure instability due to dynamic unsteadiness of a compressor is described briefly, which reveals the necessity of carrying out an investigation on multi-physical field dynamical signal synchronization testing and analysis for compressor unsteady phenomena. A schematic design of multi-physical field dynamical signal synchronization test and analysis is accomplished, and the key issues, such as time synchronism, phase angle modification and synchronization test and analysis are dealt with. This design is applied to the unsteady failure mechanism study of an aero-engine compressor and demonstrates satisfactory effect, which shows there may be a broad prospect for this dynamical test platform to be applied to the research of compressor unsteady performances.

Key words: compressor, dynamics test, aerodynamics instability, rotating stall, blade non-synchronous vibration, noise

CLC Number: