Accession Number : ADA289330

Title :   Recirculating Cavity Casing Treatment Failure.

Descriptive Note : Final rept. Apr 93-Feb 94,

Corporate Author : WRIGHT LAB WRIGHT-PATTERSON AFB OH

Personal Author(s) : Kerney, Paul T.

PDF Url : ADA289330

Report Date : AUG 1994

Pagination or Media Count : 22

Abstract : As part of the Augmented Damping of Low Aspect Ratio Fans (ADLARF) program at the Compressor Research Facility (CRF), the Recirculating Cavity Casing Treatment was in test operation. The casing treatment was made of 6061-T6 aluminum alloy and was specially instrumented for the exploration of stall margin, performance data, and thermal effects. In addition to obtaining stall margin data, this casing treatment was part of a detailed test program to study the effects of five different casing treatments. After thermal cycling the casing treatment between ambient temperature and 650 deg F, the casing treatment failed after seven hours of test time. The casing treatment was removed and a failure analysis was performed. This paper will summarize the study findings and conclude with recommended actions.

Descriptors :   *FAILURE, *CAVITIES, *COMPRESSORS, TEST AND EVALUATION, THERMAL PROPERTIES, ALUMINUM ALLOYS, TEMPERATURE, AIRCRAFT ENGINES, AUGMENTATION, DAMPING, RESEARCH FACILITIES, CYCLES, TIME, STALLING, HEATING, LOW LEVEL, ENGINES, FANS, ASPECT RATIO, TURBINE COMPONENTS .

Subject Categories : Aircraft
      Aircraft
      Hydraulic and Pneumatic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE