Accession Number:

AD1173353

Title:

Predicting TF33-PW-100A Engine Failures Due to Oil Issues Using Survival Analysis

Descriptive Note:

[Technical Report, Master's Thesis]

Corporate Author:

AIR FORCE INSTITUTE OF TECHNOLOGY WRIGHT-PATTERSON AFB OH

Personal Author(s):

• Davis, Anna M

Report Date:

2022-03-01

Pagination or Media Count:

91

Abstract:

In 2007, the Office of the Assistant Secretary of Defense for Sustainment pushed for the need to transition to a Condition Based Maintenance Plus CBM initiative for weapon systems in the U.S. Department of Defense. The CBM initiative can help increase aircraft availability AA for the United States Air Force. There are many reasons where AA can be affected but one such issue is engine availability primarily due to oil issues. Within the CBM perspective, this study examines the risk of a jet engine failure due to an oil issue and attempts to predict an enginestime until next failure using survival analysis. Predicted engines failure could be used to help pilots, maintainers, repair shops, and system program offices become better equipped to handle an oil issue before it occurs. The results of this study showed that as the engines sorties on wing gradually increased, the risk of failure increased. In addition, this study found that a Weibull model with accelerated failure time was the most suitable model to predict the remaining life of the engine before it failed due to an oil issue. Based on the results, this study developed a field ready estimation tool that could be used by practitioners for predicting engine failures.

Descriptors:

Subject Categories:

• Jet and Gas Turbine Engines
• Aircraft

Distribution Statement:

[A, Approved For Public Release]