Accession Number : ADP000370

Title :   Gas Turbine Rotor/Case Structural Response to Rotating Stall: Experimental Documentation and Analytical Approach,

Corporate Author : GENERAL MOTORS CORP INDIANAPOLIS IN DETROIT DIESEL ALLISON DIV

Personal Author(s) : Haley,Philip J.

Report Date : 1982

Pagination or Media Count : 16

Abstract : This work presents experimental data describing the forcing functions and structural responses characterizing gas turbine rotor/case system vibration due to rotating stall in an axial-flow compressor. Two data sets with fundamentally different response characteristics are presented; one is supersynchronous and the other subsynchronous. Conventional beam-element rotor dynamics analysis is shown to be severely limited in its ability to predict these responses. A new analytical approach, which significantly increases structural response predictive capability for these phenomena, is briefly discussed.

Descriptors :   *Turbomachinery, *Gas turbines, *Gas turbine rotors, *Structural response, *Stalling, *Workshops, Axial flow compressors, Rotation, Experimental data

Distribution Statement : APPROVED FOR PUBLIC RELEASE