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 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.
Download or read book Compilation of Theses Abstracts October 1994 September 1995 written by United States. Naval Postgraduate School, Monterey, CA. and published by . This book was released on 1995 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A User s Manual for the Cost Effectiveness Analysis Spreadsheet Model for Aircraft Engines CEAMOD Version 2 0 written by Ross R. Reeves and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis provides a comprehensive procedures manual and user's guide which will enable both current users and beginners to understand and employ Version 2.0 of the Cost Effectiveness Analysis model (CEAMOD), which is written in EXCEL spreadsheet software, in their service's aircraft engine Component Improvement Programs (CIP). The purpose of the CEAMOD is to project the possible savings which would be achieved from an Engineering Change Proposal's (ECP) implementation. The thesis begins by describing the model's background, basic assumptions, and format. Next, a detailed description of each page and the cell formulas used in each column of the spreadsheet are provided. A 'getting started' user's guide was also created to provide the user with the basic information necessary to actually use the CEA Deck/EXCEL spreadsheet software. An example of each page of the CEA model is provided as well as the Standard History File fleet input pages.
Download or read book A User s Manual for the Cost Effectiveness Analysis Spreadsheet Model for Aircraft Engines CEAMOD Version 2 0 written by Ross R. Reeves and published by . This book was released on 1993 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis provides a comprehensive procedures manual and user's guide which will enable both current users and beginners to understand and employ Version 2.0 of the Cost Effectiveness Analysis model (CEAMOD), which is written in EXCEL spreadsheet software, in their service's aircraft engine Component Improvement Programs (CIP). The purpose of the CEAMOD is to project the possible savings which would be achieved from an Engineering Change Proposal's (ECP) implementation. The thesis begins by describing the model's background, basic assumptions, and format. Next, a detailed description of each page and the cell formulas used in each column of the spreadsheet are provided. A 'getting started' user's guide was also created to provide the user with the basic information necessary to actually use the CEA Deck/EXCEL spreadsheet software. An example of each page of the CEA model is provided as well as the Standard History File fleet input pages.
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 Government Reports Announcements Index written by and published by . This book was released on 1995 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A User s Manual for the Cost Effectiveness Analysis Model CEAMOD Version 3 0 written by Mario Mifsud and published by . This book was released on 1996-09-01 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis develops a comprehensive procedures manual for Version 3. 0 of the Cost Effectiveness Analysis (CEA) Model. The CEA Model is used in each service's Component Improvement Program (CIP) as a means of doing cost effectiveness analysis on Engineering Change Proposals (ECPs) for aircraft engines. The model uses expected values to calculate changes in life cycle costs that result from implementation of the ECP. A detailed analysis of the spreadsheet's calculations is provided to explain to users the model's logic. This comprehensive manual covers the model's history, assumptions, limitations, and format. Each worksheet of the model is described in detail including its purpose, explanations of each column, associated cell formulas and the logic behind them. The appendix provides a sample of each page of the CEA Model printout.
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 105 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 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 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 Evaluation of the Cost Effectiveness Analysis Model Being Developed for the Component Improvement Programs of the Air Force and the Navy written by and published by . This book was released on 1992 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis examines the Cost Effectiveness Analysis (CEA) model used by the Air Force to assist with the decision making process of their Cost Improvement Program (CIP). The emphasis was on studying the model for its use in the Naval Component Improvement Program. With an example provided by General Electric, a sensitivity analysis was performed to determine the cost drivers of the model. For the example, the major cost drivers were found to be the Incorporation Style, Kit Hardware Cost, and the Spare Part Factor. Next a simple simulation was conducted to determine how random component failures affect the life cycle cost variability of the CEA model. The author concluded that additional simulation studies should be conducted for other causes of variation. A detailed analysis of the model formulas and assumptions are needed as part of a users' manual.
Download or read book An Appraisal of Cost effectiveneess i e Effectiveness Models Used in the Air Force and Navy Aircraft Engine Component Improvement Programs written by James D. Davis and published by . This book was released on 1991 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A U S Air Force Cost Analysis Cost Estimating Model Program for Use with the TI Programmable 59 Handheld Calculator written by Joe M. Balding and published by . This book was released on 1978 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper documents a Texas Instruments 'TI Programmable 59' calculator program that uses the U.S. Air Force Cost Analysis Cost Estimating (CACE) model described in Air Force Regulation 173-10, Volume I, USAF Cost and Planning Factors, dated 6 February 1975. The CACE model was designed with a 'building block' approach to estimate annual operating costs of aircraft weapon systems. The model is useful to Air Force organizations, other Government agencies, and government contractors for cost analysis, life cycle cost exercises, or studies concerned with cost effectiveness comparisons between weapon systems. The program described in this paper provides the user with a means of using the CACE model with a hand-held programmable calculator, eliminating lengthy manual computation or the necessity of using a computer. With its calculator connected to the Texas Instruments 'PC-100A Print Cradle, ' the program allows the user to select among several cost factor input methods, estimate output formats, and summarization options.
Download or read book Evaluation of the Cost Effectiveness Model Being Developed for the Component Improvement Programs of the Air Force and the Navy written by Gerald L. Crowder and published by . This book was released on 1992 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Contracting for the Component Improvement Program CIP for Military Aircraft Engines written by John D. Geron and published by . This book was released on 1975 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study was scoped to look at the CIP for military aircraft engines. With an eye toward where it has been in the past, various agencies have looked at CIP to determine how it can be done better. These studies were looked at and analyzed, and the question baseline was pinpointed to the contracting function. The need to conserve dollars is a driving function, but the engine need to perform for longer periods in longer time between overhaul is equally important. At issue also is how the Government can better control the contract's effort through a higher degree of visibility to management in both engineering and funding.
