Download or read book An Analysis of the Aircraft Engine Component Improvement Program CIP A Life Cycle Cost Approach written by and published by . This book was released on 1990 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increasing budgetary constraints have prompted actions to reduce the maintenance cost of current naval aircraft. This thesis examines the Aircraft Engine Component Improvement Program (CIP), its impact on these cost at the organizational and intermediate levels of maintenance, and savings from these improvements. The objectives of the research were to identify current life cycle cost (LCC) models used by the Navy and/or the other services to determine CIP benefits, to validate on-going LCC-oriented computer program. This thesis is organized into areas covering CIP objectives and considerations, system effectiveness, reliability, LCC and related data and models, aircraft data used for LCC, CIP/LCC computer models, return on investment (ROI) analysis program of the F-14A TF30-P-414A engine improvement, conclusions and recommendations. Based on the ROI analysis and ECIFR reports, the engine improvement program has been cost effective.
Download or read book An Appraisal of Cost Effectiveness Models Used in the Air Force and Navy Aircraft Engine Component Improvement Programs written by and published by . This book was released on 1991 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis examines the cost-effectiveness models used by the Air Force and Navy to assist with the decision-making process of their Component Improvement Programs (CIP). The focus on the elements of the two models and the reasonableness of each model's results. A sensitivity analysis was performed on significant input parameters to determine what effect errors in these parameters would have on the predicted return-on-investment (ROI) results. The author concluded that, although the models provide insight into life cycle costs (LCC) of aircraft engines, they are extremely sensitive to errors in certain input variables and should not be relied upon for CIP budget justification.
Download or read book An Analysis of the Costs and Benefit in Improving the T56 A 427 Interconnector Harness End and Mating Thermocouple End Connector Under the Aircraft Engine Component Improvement Program CIP written by Thomas Joseph Murphy and published by . This book was released on 1994 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis is a study validating the cost effectiveness of the Component Improvement Program for aircraft engines. It determines the costs and benefits derived from the Navy incorporating Power Plant Change 111 which improved the interconnector harness end and mating thermocouple end connector of the T56-A-427 engine. Useful maintenance data pertaining to this component was extracted from the Naval Logistics Data Analysis (NALDA) system. Cost data pertaining to the Power Plant Change was taken from two sources, the Manufacturer's Engineering Program Description (EPD) and the Naval Air System Command's Configuration Change Control Board (CCCB) document. Based on the author's analysis, the improvement to the interconnector harness end and mating thermocouple end connector was cost-effective from both a financial break-even point in that the cost to produce the improvement will be recovered after three years, and from a Net Present Value analysis on this improvement which shows that the U.S. Navy will save more than $400,000 during the expected fifteen-year life cycle of the engine.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preliminary Analysis of the J 52 Aircraft Engine Component Improvement Program written by Randall S. Butler and published by . This book was released on 1992 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Analysis of Information Sources for the Estimation of Life Cycle Operating and Maintenance Costs of Turbine Engines written by Michael D. Baker and published by . This book was released on 1977 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study is an attempt to locate, analyze and evaluate data bases which contain operation and support (O and S) cost data for aircraft engines. The search for these data bases was primarily conducted at Headquarters, Air Force Logistics Command. The study focused upon the Increase Reliability of Systems (IROS) data base, the HO36B DOD Cost and Production Report, the AFM 400-1 actuarial data system, the cost and planning factors in AFR 173-10, aerospace ground equipment data located in the Tables of Allowance, and Component Improvement Program data located at the Deputy for Propulsion, Aeronautical Systems Division. The study of these data bases led to the conclusion that data bases in the Air Force are not well designed for cost data collection and that many data bases are necessary to obtain the total operation and support cost of an aircraft engine. (Author).
Download or read book Application of the Weibull Distribution to the Cost Effectiveness Analysis Spreadsheet Model CEAMOD for the Aircraft Engine Component Improvement Program CIP written by Glenn R. Cook and published by . This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis explores the application of the Weibull distribution to the Cost Effectiveness Analysis Spreadsheet Model (CEAMOD) for the Aircraft Engine Component Improvement Program (CIP). The current model assumes the exponential distribution for all unscheduled failures. This thesis explores whether the Weibull distribution can be used in the CEAMOD. This process is performed through the use of a simulation program and spreadsheet analysis. The thesis first examines past concerns that the use of the Weibull will create cyclic annual numbers of failures of a component over an engine's life. It then examines the empirical distributions of the number of failures per year generated from simulations for a range of Weibull parameters and compares these with the Poisson distribution resulting from the current CEAMOD assumption of exponential times between failures. Finally, it considers how life cycle costs considered by the CEAMOD will change if the Weibull distribution is assumed. The conclusion is that the nature of the distribution of the annual number of failures should be studied further before the Weibull is incorporated in the CEAMOD.
Download or read book An Approach to the Life cycle Analysis of Aircraft Turbine Engines written by J. R. Nelson and published by . This book was released on 1979 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: Application to military aircraft.
Download or read book An Analysis of Non integerizing the Aircraft Engines Cost Effectiveness Analysis Spreadsheet Model CEAMOD Version 2 0 written by Karl F. Rau and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis investigated the effect of integerization in the Cost Effectiveness Analysis Spreadsheet Model (CEAMOD Version 2.0) used by the Navy and the Air Force for decision-making in their aircraft engine Component Improvement Programs (CIP). A non-integerized model was developed and sensitivity analysis was performed to determine the cost drivers of the revised model. Three major cost drivers were then utilized as sensitivity analysis tools for comparing the decision values obtained from the current model with those obtained from the revised model. The author concluded that while the non- integerized CEAMOD is more theoretically correct, it would not lead to different decisions than CEAMOD Version 2.0.
Download or read book Quarterly Supplement to the Annual Department of Defense Bibliography of Logistics Studies and Related Documents written by United States. Defense Logistics Studies Information Exchange and published by . This book was released on 1992 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA SP written by and published by . This book was released on 1992 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Summary of Research 1995 written by United States. Naval Postgraduate School, Monterey, CA. and published by . This book was released on 1995 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1992-04 with total page 1522 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book AIRCRAFT ENGINE LIFE CYCLE COST GUIDE written by LCLS Life Cycle Logistics Supportability and published by . This book was released on 1986 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: AIR 1939 addresses communication of LCC data between equipment suppliers, aircraft engine producers, aircraft manufacturers, and users, as illustrated in Figure 1. The LCC data categories addressed include: research, development, test and evaluation (RDT&E); acquisition (initial procurement and investment); and operating and support (O&S) costs. While input and output formats are suggested, calculation procedures and cost methodology are specifically excluded since many LCC models preferred by the industry are company sensitive or proprietary (Figure 1). The relationship of LCC input data to program phase is described. Ground rules and assumptions are addressed. A glossary of LCC terms is provided. The LCC impact of propulsion systems on other aircraft systems is considered.This document was specifically developed for military propulsion system cost analysis. However, it is believed that a functional relationship exists between military and commercial Life Cycle Cost analysis and that with some interpretation, sections of AIR 1939 might be applicable to commercial propulsion systems as well.In summary, AIR 1939 provides a basis for LCC calculations, for monitoring of LCC status resulting from trade studies, and for tracking status against LCC goals in a consistent manner, thus permitting quantitative, comparable assessment. AIR 1939 guidelines recommend that a Life Cycle Cost presentation include consideration of overall cost rather than a sub-optimization of just one or a few cost elements.
Download or read book An Appraisal of Models Used in Life Cycle Cost Estimation for USAF Aircraft Systems written by Kenneth E. Marks and published by . This book was released on 1978 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although life cycle analysis is widely used as a management tool, considerable uncertainty still exists about its effectiveness with respect to economic tradeoffs, funding decisions, and resource allocations. This report evaluates some of the most widely used life cycle cost models: AFR l73-10 models (BACE and CACE); the Logistics Support Cost model; the Logistics Composite model; the MOD-METRIC model; AFM 26-3 Manpower Standards; Air Force Logistics Command Depot Maintenance Cost Equations; the DAPCA model; and the PRICE model. The models are rated within a framework incorporating a set of cycle cost elements and a set of cost driving factors. Color-coded illustrations summarize the results. The models are shown to have many shortcomings that limit their usefulness for life cycle analyses in which estimates of absolute, incremental cost are required. Specific areas are identified where driving factor/cost element combinations are not adequately addressed.
Download or read book Government Reports Annual Index written by and published by . This book was released on 1992 with total page 1728 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Application of the Weibull Distribution to the Cost Effectiveness Analysis Spreadsheet Model CEAMOD for the Aircraft Engine Component Improvement Program CIP written by Glenn R. Cook and published by . This book was released on 1994 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis explores the application of the Weibull distribution to the Cost Effectiveness Analysis Spreadsheet Model (CEAMOD) for the Aircraft Engine Component Improvement Program (CIP). The current model assumes the exponential distribution for all unscheduled failures. This thesis explores whether the Weibull distribution can be used in the CEAMOD. This process is performed through the use of a simulation program and spreadsheet analysis. The thesis first examines past concerns that the use of the Weibull will create cyclic annual numbers of failures of a component over an engine's life. It then examines the empirical distributions of the number of failures per year generated from simulations for a range of Weibull parameters and compares these with the Poisson distribution resulting from the current CEAMOD assumption of exponential times between failures. Finally, it considers how life cycle costs considered by the CEAMOD will change if the Weibull distribution is assumed. The conclusion is that the nature of the distribution of the annual number of failures should be studied further before the Weibull is incorporated in the CEAMOD.
