Download or read book Functional Cost Estimating Relationships for Spacecraft written by and published by . This book was released on 1996 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: The costs to acquire space-based missile defense systems are often reviewed by DoD. Issues are raised concerning the cost models used to generate cost estimates for space-based missile defense systems. The Ballistic Missile Defense Organization questions the use of traditional weight-based spacecraft cost models developed by the Air Force Space and Missile Systems Center. The concern is motivated by changes in satellite designs of future systems where smaller but more capable spacecraft are being built. Using weight-based cost models yields lower cost estimates, although the spacecraft are more capable. IDA developed spacecraft functional (engineering and manufacturing) cost-estimating relationships (CERs) at the spacecraft subsystem level using performance and physical characteristics that are not primarily weight-based. We developed nonrecurring (design, development, and test) and recurring (production) CERs for the spacecraft bus, including ground support equipment, and for communications payloads. The CERs show that programmatic aspects, which reflect the requirements and acquisition environments that the satellites were acquired under, have considerable influence on satellite costs.

Download or read book Small Satellite Cost Estimating Relationships written by David A. Bearden and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guidelines and Metrics for Assessing Space System Cost Estimates written by Bernard Fox and published by RAND Corporation. This book was released on 2008 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1. Introduction / 2. Space system fundamentals / 3. Reviewing a cost estimate / 4. Space vehicle cost crosschecks / 5. Common issues in estimating space programs / 6. Resources for space system cost estimation / 7. Recommendations.

Download or read book Space Programs written by United States. General Accounting Office and published by . This book was released on 1992 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cost Estimating Methods for Advanced Space Systems written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-16 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: NASA is responsible for developing much of the nation's future space technology. Cost estimates for new programs are required early in the planning process so that decisions can be made accurately. Because of the long lead times required to develop space hardware, the cost estimates are frequently required 10 to 15 years before the program delivers hardware. The system design in conceptual phases of a program is usually only vaguely defined and the technology used is so often state-of-the-art or beyond. These factors combine to make cost estimating for conceptual programs very challenging. This paper describes an effort to develop parametric cost estimating methods for space systems in the conceptual design phase. The approach is to identify variables that drive cost such as weight, quantity, development culture, design inheritance and time. The nature of the relationships between the driver variables and cost will be discussed. In particular, the relationship between weight and cost will be examined in detail. A theoretical model of cost will be developed and tested statistically against a historical database of major research and development projects. Cyr, Kelley Unspecified Center ...

Download or read book A Critique of Spacecraft Cost Models written by J. A. Dryden and published by . This book was released on 1977 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper examines the estimation accuracy of a group of parametric cost models used for a variety of spacecraft. It reinforces the caveat of model builders that models should not be used mechanically but should reflect changing spacecraft characteristics. Weight, the most widely used independent variable, should be less constraining in the next generation of spacecraft with space-shuttle launching. Spacecraft are becoming cheaper on a per-unit-of-performance basis. In estimating nonrecurring costs, none of the models are generally applicable to any subsystem except structure, but several SAMSO models are useful for estimating total nonrecurring cost. All the models do better in estimating recurring costs. The SAMSO models appear most reliable for the user who lacks detailed knowledge of a program and wishes to base an estimate on such characteristics as weight and maximum array output.

Download or read book Improving the Cost Estimation of Space Systems written by Obaid Younossi and published by Rand Corporation Monograph. This book was released on 2008 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Why have the costs of acquiring space systems been so high? What are the sources of the problems? To answer these questions, RAND researchers examined the sources of cost growth of Air Force space systems and undertook an extensive study of two space systems--the Space Based Infrared System-High (SBIRS) and the Global Positioning System (GPS)--including an evaluation of their sources of cost growth, an assessment of their approaches to technical risk assessment, and an examination of their acquisition policy adaptations and industrial base environments. The researchers recommend independent program assessment for space systems that emphasizes technical and program factors, and a modified organizational structure that maintains cost analyst independence. They also summarize the cost estimating best practices of several other government organizations.

Download or read book Mass Estimating Relationships for Interplanetary Spacecraft Subsystems written by Miles O. Duquette and published by . This book was released on 1990 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Operations and Modeling Analysis written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-09-24 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Reliability and Maintainability Analysis Tool (RMAT) provides NASA the capability to estimate reliability and maintainability (R&M) parameters and operational support requirements for proposed space vehicles based upon relationships established from both aircraft and Shuttle R&M data. RMAT has matured both in its underlying database and in its level of sophistication in extrapolating this historical data to satisfy proposed mission requirements, maintenance concepts and policies, and type of vehicle (i.e. ranging from aircraft like to shuttle like). However, a companion analyses tool, the Logistics Cost Model (LCM) has not reached the same level of maturity as RMAT due, in large part, to nonexistent or outdated cost estimating relationships and underlying cost databases, and it's almost exclusive dependence on Shuttle operations and logistics cost input parameters. As a result, the full capability of the RMAT/LCM suite of analysis tools to take a conceptual vehicle and derive its operations and support requirements along with the resulting operating and support costs has not been realized.Ebeling, CharlesLangley Research CenterCOST ANALYSIS; COST ESTIMATES; MATHEMATICAL MODELS; RELIABILITY ANALYSIS; MAINTAINABILITY; MISSION PLANNING; OPERATING COSTS; POLICIES; SPACE TRANSPORTATION SYSTEM FLIGHTS; SUPPORT SYSTEMS

Download or read book Cost Estimator s Reference Manual written by Rodney D. Stewart and published by John Wiley & Sons. This book was released on 1995-04-03 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt: In today's hypercompetitive global marketplace, accurate costestimating is crucial to bottom-line results. Nowhere is this moreevident than in the design and development of new products andservices. Among managing engineers responsible for developingrealistic cost estimates for new product designs, the number-onesource of information and guidance has been the Cost Estimator'sReference Manual. Comprehensive, authoritative, and practical, the Manual instructsreaders in the full range of cost estimating techniques andprocedures currently used in the fields of development, testing,manufacturing, production, construction, software, generalservices, government contracting, engineering services, scientificprojects, and proposal preparation. The authors clearly explain howto go about gathering the data essential to preparing a realisticestimate of costs and guide the reader step by step through eachprocedure. This new Second Edition incorporates a decade of progress in themethods, procedures, and strategies of cost estimating. All thematerial has been updated and five new chapters have been added toreflect the most recent information on such increasingly importanttopics as activity-based costing, software estimating,design-to-cost techniques, and cost implications of new concurrentengineering and systems engineering approaches to projects. Indispensable to virtually anyone whose work requires accurate costestimates, the Cost Estimator's Reference Manual will be especiallyvaluable to engineers, estimators, accountants, and contractors ofproducts, projects, processes, and services to both government andindustry. The essential ready-reference for the techniques, methods, andprocedures of cost estimating COST ESTIMATOR'S REFERENCE MANUAL Second Edition Indispensable for anyone who depends on accurate cost estimates forengineering projects, the Cost Estimator's Reference Manual guidesthe user through both the basic and more sophisticated aspects ofthe estimating process. Authoritative and comprehensive, the Manualseamlessly integrates the many functions--accounting, financial,statistical, and management--of modern cost estimating practice.Its broad coverage includes estimating procedures applied to suchareas as: * Production * Software * Development * General services * Testing * Government contracting * Manufacturing * Engineering * Proposal preparation * Scientific projects * Construction This updated and expanded Second Edition incorporates all the mostimportant recent developments in cost estimating, such asactivity-based costing, software estimating, design-to-costtechniques, computer-aided estimating tools, concurrentengineering, and life cycle costing. For engineers, estimators, accountants, planners, and others whoare involved in the cost aspects of projects, the Cost Estimator'sReference Manual is an invaluable information source that will payfor itself many times over.

Download or read book Improving the Cost Estimation of Space Systems Past Lessons and Future Recommendations written by and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In response to historically high cost growth in the acquisition of space systems, the Under Secretary of the Air Force, in accordance with National Security Space (NSS) Acquisition Policy, directed the Air Force acquisition community to support the development of independent, accurate, and timely cost analyses to make the acquisition of NSS systems more realistic in terms of estimated costs. In turn, the former commander of Air Force Space Command (AFSPC), Gen Lance W. Lord, and the former commander of the Air Force Space and Missile Systems Center (SMC), Lt Gen Michael Hamel, asked RAND Project AIR FORCE to assess cost-estimating requirements and capabilities of SMC cost-estimating organizations as well as their resources, tools, methods and processes and to recommend an enhanced approach to cost analysis aimed at improving cost-estimating for space systems and increasing the understanding of factors that influence their cost. The study was sponsored by the former commander of SMC, General Hamel. The project technical monitor was Col Delane Aguilar, SMC/FMC. The research was conducted within the Resource Management Program of RAND Project AIR FORCE as part of a multiyear study entitled Air Force Space Systems Costs. The initial data collection was completed in May of 2006 and the final update was provided in February of 2007, with frequent updates in between. The final briefing was presented to General Hamel on March 13, 2007, and to Gen Kevin P. Chilton, the former commander of Air Force Space Command, on March 21, 2007. This monograph should interest government personnel involved in cost estimation and acquisition of defense systems, the military space acquisition communities, and those concerned with current and future acquisition policies.

Download or read book Estimating Software Development Costs and Schedules for Space Systems written by and published by . This book was released on 1994 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper analyzes historical software development costs and schedules from military and NASA satellite systems. Cost-and time-estimating relationships were developed for ground segment and embedded flight software. In addition to the traditional size variable, other cost drivers were found: software residence (ground or flight), and software type (application and support). Schedule driving variables included size, staffing level, and residence. The equations developed from the study can be used to estimate future space system software development costs or to cross-check estimates generated by other methods.

Download or read book Statistical Improvements in the Unmanned Spacecraft Cost Model Monograph 1 written by Brian Flynn and published by . This book was released on 1985 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this monograph is to test some of the CER's in the Unmanned Spacecraft Cost Model for non-constant error variances, or heteroskedasticity, and to take corrective statistical action if and where the problem is found. The Unmanned Spacecraft Cost Model is a set of regression equations or Cost Estimating Relationships (CER's) designed to explain the costs of spacecraft subsystems, such as electrical power supplies, apogee kick motors, and communication electronics. Technical and performance characteristics are used to explain costs, with the model based on 35 military, communications, weather, experimental, and lunar-probe spacecraft. The model presents equations for explaining both first-unit recurring costs and total nonrecurring costs, using 'normalized' and 'unnormalized' data. This paper, the first of five statistical monographs on the spacecraft model.

Download or read book Nasa Cost Estimating Handbook Ver 4 0 written by U.s. National Aeronautics And Space Administration and published by Createspace Independent Publishing Platform. This book was released on 2017-01-14 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the fourth edition of the National Aeronautics and Space Administration (NASA) Cost Estimating Handbook (CEH), updating the 2008 edition. The purpose of this handbook is to serve as a guide for cost estimating at NASA. The intended audience covers the non-estimating professional and the new cost estimator, as well as experienced analysts. The intent of this revision is to provide an update reflecting significant policy changes since the 2008 edition

Download or read book Cost Estimating Procedure for Unmanned Satellites written by H. Greer and published by . This book was released on 1980 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Historical costs from 11 unmanned satellite programs were analyzed. From these data, total satellite cost estimating relationships (CERs) were developed for use during preliminary design studies. A time-related factor, which it is believed accounts for differences in technology, was observed in the data. Stratification of the data by type of payload was also found to be necessary. Cost differences that stem from production quantity variations were accounted for by adjustment factors developed from standard learning curve theory. An example to illustrate use of the CERs is provided.

Download or read book Aircraft Airframe Cost Estimating Relationships written by Ronald Wayne Hess and published by . This book was released on 1987 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This Note is part of a series that derives a set of equations suitable for estimating the acquisition costs of various types of aircraft airframes in the absence of detailed design and manufacturing information. A single set of equations was selected as being the most representative and applicable to the widest range of estimating situations. For all mission types, the equation set uses empty weight and speed as the basic size-performance variable combination."--Rand abstracts.

Download or read book Economic Principles Applied to Space Industry Decisions written by Joel S. Greenberg and published by AIAA. This book was released on 2003 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: