Accession Number:

ADA045670

Title:

Reliability Prediction for Combustors and Turbines. Volume I.

Descriptive Note:

Final rept. 15 Jun 75-30 Nov 76,

Corporate Author:

PRATT AND WHITNEY AIRCRAFT GROUP WEST PALM BEACH FLA GOVERNMENT PRODUCTS DIV

Personal Author(s):

Report Date:

1977-06-01

Pagination or Media Count:

86.0

Abstract:

Creep - low cycle fatigue and louver lip collapse have been established as primary gas turbine combustion chamber failure modes by observation of field service and in-house endurance test hardware. Analytical models for these two failure modes have been developed an incorporated into a mission analysis program. The mission analysis program relates component environment temperature, pressure and flow to the aircraft engine and flight characteristics and thereby provides the forcing functions for the turbine and combustor failure models. The combined mission analysis - failure model program was used to predict component lives for transport and fighterattack aircraft over representative missions. The sensitivity of the prediction system was established by perturbations to the mission and input parameters.

Subject Categories:

  • Manufacturing and Industrial Engineering and Control of Production Systems
  • Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE