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Reliability and Maintainability Symposium, 1988. Proceedings., Annual

Date 26-28 Jan. 1988

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Displaying Results 1 - 25 of 81
  • Annual Reliability and Maintainability Symposium. 1988 Proceedings (Cat. No.88CH2551-0)

    Publication Year: 1988
    Request permission for commercial reuse | PDF file iconPDF (26 KB)
    Freely Available from IEEE
  • Product assurance of PATRIOT air defense system

    Publication Year: 1988, Page(s):154 - 160
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (505 KB)

    PATRIOT is a highly sophisticated air-defense guided-missile system designed to be effective against aircraft representing the field army defense threat of the 1980s and 1990s. An overview is given of this comprehensive system which satisfies reliability, availability, and maintainability (RAM) analysis requirements and which now functions to monitor system performance and support related product ... View full abstract»

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  • Eliminating `can not duplicate' and `excessive trouble-shooting' diagnostic actions

    Publication Year: 1988, Page(s):323 - 326
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB)

    The application of a reliability and maintenance (R&M) figure of merit is reported. The figure of merit is known as the expended maintenance importance ratio (EMIR). It relates reliability and maintainability in a single value. It is shown how to use the EMIR in predicting R&M costs and how, with data reduction techniques, to identify specific improvements. Examples developed from historic... View full abstract»

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  • The Tomahawk consolidated database

    Publication Year: 1988, Page(s):319 - 322
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB)

    A consolidated database was developed for the Tomahawk cruise missiles project to store and automatically retrieve data from numerous production contractors, field activities, and repair facilities. A case study dealing with the design and implementation of the consolidated database is reported. Over 30 tracked components of each Tomahawk missile are followed through production, deployment, depot ... View full abstract»

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  • Contractor flight testing of cluster munitions

    Publication Year: 1988, Page(s):314 - 318
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (612 KB)

    Contractor management and performance of air-dispensed munition tests is considered. The authors examine issues associated with scoring for reliability performance assessment, explosive ordnance disposal, identification and resolution of safety issues, coordination of high-explosive cluster munition air drops with subcontractor and Government agencies, establishment of pass/fail criteria, and fail... View full abstract»

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  • CAD techniques for improved maintainability design

    Publication Year: 1988, Page(s):122 - 126
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    A method is described which the maintainability engineer can utilize computer-aided design (CAD) techniques to improve the timeliness of impacting system design. Design data can be captured as they are generated by design engineering, enabling the maintainability engineer to perform analyses early in the system design and satisfy contractual maintainability and testability requirements. Techniques... View full abstract»

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  • What comes first-RAMCAD or a new RAM methodology?

    Publication Year: 1988, Page(s):32 - 38
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (660 KB)

    A practical methodology of a future reliability program is discussed. Seven major lessons learned from today's reliability methodology are also examined. These lessons are translated into requirements that can implement the projected computerized reliability programs. Draft revisions of two MIL-STD-785B tasks (204 and 205) are presented to exemplify the modernization of current reliability program... View full abstract»

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  • R&M engineering for off-the-shelf critical software

    Publication Year: 1988, Page(s):218 - 226
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (880 KB)

    The authors present some preliminary guidelines for evaluation of reliability and maintainability (R&M) and certification of off-the-shelf software components. These guidelines are established as engineering criteria which must be achieved in each software component which is selected for reuse View full abstract»

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  • Kife cycle cost procedure for commercial aircraft subsystems

    Publication Year: 1988, Page(s):389 - 394
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB)

    The authors identify the need to analyze the commercial aircraft subsystem cost effectiveness to optimize the design and production decisions of the subsystem manufacturer, The life cycle cost methodology developed by Dowty Canada Limited, together with the computer program that supports it, and an optimizing procedure, is presented View full abstract»

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  • A simulation program to model effects of logistics on R&M of complex systems

    Publication Year: 1988, Page(s):306 - 313
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    A simulation program (SIMULAV) is presented that is capable of modeling large-scale reliability systems. The program can model the effect of such logistics characteristics as inventory, transportation, and facilities on the reliability and availability of the system. The program is written in Pascal and it consists of three main elements: a process-oriented simulation language, a minimal cut-sets ... View full abstract»

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  • Computer aided life cycle engineering

    Publication Year: 1988, Page(s):26 - 31
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB)

    Developments in the Computer Aided Life Cycle Engineering (CALC) research program at the University of Maryland, USA are reported. The CALCE system program is a computer application of the Unified Life Cycle Engineering (ULCE) design process. ULCE differs from the traditional design process in that consideration is given to design issues such as performance, cost, schedule, supportability and prod... View full abstract»

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  • Issues affecting the reliability of software-cost estimates (trying to make chicken salad out of chicken feathers)

    Publication Year: 1988, Page(s):195 - 201
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (644 KB)

    The author discusses a wide range of dynamic factors (many of which are managerial, subjective, and/or nonquantifiable) present in the software development environment that severely inhibit the generation of reliable cost estimates. The wide-ranging results of a comparison of several cost models applied to a hypothetical system are presented to illustrate the basis for low confidence levels in sof... View full abstract»

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  • Improved `dynamic random access memory' prediction improves design decisions

    Publication Year: 1988, Page(s):364 - 372
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (644 KB)

    A method of reliability prediction is discussed that provides a means to quantify design tradeoffs for memory systems comprised of dynamic random-access memories (DRAMs). This method, the NEW-NEW method, builds on earlier work that has predicted the reliability of narrow, specific classes of memory systems, such as systems without error detection and correction. The NEW-NEW approach provides memor... View full abstract»

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  • Army operational test and evaluation of TMDE+

    Publication Year: 1988, Page(s):151 - 153
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    A research approach is described along with the assessment of data being used in refining US Army operational test and evaluation (OT&E) methodologies for test measurement and diagnostic equipment and supporting diagnostic capabilities (TMDE+). The author views TMDE+ as a fault detection/isolation/location system (FDILS) totally integrated within a weapon system. The continuous comprehensive e... View full abstract»

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  • Automated fault tree analysis via AI/ES

    Publication Year: 1988, Page(s):331 - 335
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    A description is given of FTA, an interactive fault tree analysis tool that integrates the creation of fault trees with the propagation of failure rates. This tool allows the engineer to create, modify and manipulate fault trees easily, and requires little instruction on how to use the software. The fault trees generated are directly used in the propagation of failure rates without having to exit ... View full abstract»

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  • Analysis of repair data

    Publication Year: 1988, Page(s):231 - 233
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (188 KB)

    A simple, informative plot of data on numbers and costs of repairs on a sample of systems is presented. The plot provides a nonparametric estimate of the mean cumulative (1) cost or (2) number of repairs per system versus system age. The plot is used to: (1) evaluate whether a cost (or repair) rate increases or decreases with age, which helps one decide on system retirement and burn-in; (2) compar... View full abstract»

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  • Tracking of reliability growth in early development

    Publication Year: 1988, Page(s):238 - 242
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    Reliability growth tracking is a method for quantifying and monitoring system reliability during the development process through the collection and analysis of test related data. Often reliability growth tracking is not contractually required or it is not done until late in the development process as part of a formal reliability demonstration test. The benefits that can be obtained by conducting r... View full abstract»

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  • Reliability growth estimation with missing data. II

    Publication Year: 1988, Page(s):248 - 253
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (372 KB)

    In the analysis of a set of reliability growth data, it may happen that the failure information reported over some interval of test time is determined to be incorrect. This situation may take the form of too many or too few failures being reported. If these data are used in the analysis, the result may be distorted estimates of the growth rate and current system reliability. A practical reliabilit... View full abstract»

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  • Common-cause failures in repairable systems

    Publication Year: 1988, Page(s):283 - 289
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    Eight models are presented for performing reliability analysis of repairable and nonrepairable redundant systems with common-cause failures. The systems studied are redundant configurations such as parallel, k-out-of-n units, and standby. Repairable systems reliability, mean-time-to-failure, and variance of time to failure formulas are developed. In addition, the reliability anal... View full abstract»

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  • Relevancy in fault detection analysis

    Publication Year: 1988, Page(s):118 - 121
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    The author discusses the concept of relevancy of circuits, parts, and part failure to system performance and the impact of relevancy to fault detection analysis results. Relevancy requires that all circuits, parts, and part failure modes in a system be analyzed to determine if, in the event of an equipment malfunction, there is an adverse effect on system performance. Thus, a circuit failure criti... View full abstract»

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  • R&M quality team concept: a new R&M 2000 initiative

    Publication Year: 1988, Page(s):277 - 279
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    The Aeronautical Systems Division's C-17 System Program Office has introduced a project management initiative designed to improve the effectiveness of a company's design organization, and to recognize and manage the reliability and maintainability (R&M) program in day-to-day design activities. The initiative, which is called the R&M Quality Team Concept, uses R&M quality teams and a re... View full abstract»

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  • Self-test of timing and control circuitry

    Publication Year: 1988, Page(s):108 - 111
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    Large, state-of-the-art electronic systems require the generation of many timing and control signals. These signals typically emanate from a subsystem dedicated to this timing and control function. Since this subsystem is a primary controller of system operation, it is important to be able to test it effectively. Increased testability requirements in this area have created a need for more effectiv... View full abstract»

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  • Reliability initiatives: US Air Force

    Publication Year: 1988, Page(s):6 - 7
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (216 KB)

    The US Air Force initiative called R&M (reliability and maintainability) 2000 is discussed. The purpose of this initiative is to make R&M a normal business practice in Air Force weapon system acquisition and support. The author considers the activities towards improving the R&M of Air Force weapon systems and accomplishing the goals of R&M 2000. Future aspects are also dealt with View full abstract»

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  • Software system safety and reliability

    Publication Year: 1988, Page(s):214 - 217
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    The emerging discipline of software system safety is considered. The issues discussed are: methodology, application criteria, and phasing of activities during each phase of system design. The authors show how a systems approach to software safety and reliability enhances program effectiveness and reduces costs View full abstract»

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  • Supporting the advanced technology airship

    Publication Year: 1988, Page(s):383 - 388
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1208 KB)

    After a brief history of lighter-than-air craft, the authors describe support systems for the US Navy's advanced technology airship surveillance platform program. Topics covered are: airship mooring, supportability aloft, in-flight replenishment, and support of aeronauts on prolonged missions View full abstract»

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