Accession Number:

ADA052411

Title:

Replacement Process Analysis, an Interim Report on Replacement Models.

Descriptive Note:

Rept. for 1 Oct 77-1 Feb 78,

Corporate Author:

TEXAS A AND M UNIV COLLEGE STATION DEPT OF INDUSTRIAL ENGINEERING

Personal Author(s):

Report Date:

1978-01-30

Pagination or Media Count:

37.0

Abstract:

This report describes models for the aircraft engine replacement processes and models for the probability distribution of engine ages at failure. Potential uses of these models for predicting replacement requirements are discussed. Also models for the randomness of flying hours on different aircraft are proposed for the study of the effect on replacement models which assume each aircraft flies an equal share of a flying hour program. The first section briefly describes the problem of computing replacement requirements for a fleet of aircraft. The second section describes several models of engine lives, ages at replacement, or times between replacement. These models are fundamental to the computation of replacement requirements because replacement requirements are computed based on engine life data. The third section describes models for a problem that is not usually recognized either theoretically or in practice not all aircraft fly the same share of a flying hour program. The future work is to incorporate the models of engine lives in section 2 and the models for aircraft flying times in section 3 into a procedure for computing replacement requirements. Author

Subject Categories:

  • Statistics and Probability
  • Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE