Accession Number : AD0477704


Title :   MAXIMUM TIME POLICIES. SUMMARY EDITION.


Descriptive Note : Operations analysis rept.,


Corporate Author : AIR FORCE LOGISTICS COMMAND WRIGHT-PATTERSON AFB OH OPERATIONS ANALYSIS OFFIC E


Personal Author(s) : Madden, John L


Report Date : Jan 1966


Pagination or Media Count : 11


Abstract : A cost-effective mathematical model to determine optimal (least long run cost) maximum allowable operating times for aircraft engines is described. The model uses actuarial failure rates to forecast future engine repairs under different maximum time policies and then determines the costs for each policy by using average costs per engine repair. All significant logistics costs associated with each repair action are included, such as estimates of average removal and reinstallation costs, costs of transporting engines to and from the repair facility, and repair costs. Costs are also used for the extra spare engines required to support given maximum time policies, for the penalty associated with aircraft downtime, and for the risks associated with unscheduled engine failures. (Author)


Descriptors :   *AIRCRAFT ENGINES , MAINTAINABILITY , COST EFFECTIVENESS , OPERATIONS RESEARCH , TIME STUDIES , PERFORMANCE(ENGINEERING) , FAILURE(MECHANICS) , MATHEMATICAL MODELS , ECONOMICS , LIFE EXPECTANCY(SERVICE LIFE) , MAINTENANCE , LOGISTICS , SCHEDULING


Subject Categories : Economics and Cost Analysis
      Jet and Gas Turbine Engines


Distribution Statement : APPROVED FOR PUBLIC RELEASE