The Effects of Flight Hours and Sorties on Failure Rates
Abstract
This thesis focuses on the modeling of F-14A component failure rates. Current methodology employs the Exponential distribution to model component failures and the associated Poisson distribution to determine expected demand. Three other failure rate distributions are explored as alternatives: a Weibull flight hour model, a Geometric sortie-dependent model, and a Mixed sortie-flight hour model. The expected number of component failures is calculated for each model and a comparison is made between the current model and these alternatives. The specific results pertain to aircraft of this type but the concepts employed can be applied to other aircraft as well. the Geometric model provided a better fit for components which were not operated continuously, and the Weibull performed better when the components were operated continuously. Overall, the Exponential was the least effective model for the nine components studied. Keywords: Aircraft failure rate models; Reliability; Maximum likelihood estimators; Theses.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1987
- Accession Number
- ADA182084
Entities
People
- Steven J. Phillips
Organizations
- Naval Postgraduate School