The potential user of a gas turbine system needs to apply careful and experienced judgement in system definition using qualified components to meet his specific needs. The marine gas turbine propulsion system requires testing at component subsystems and ship system level to provide adequate assurance that satisfactory reliability, maintainability and availability will be obtained in fleet service. Both schedule and cost limitations must be balanced against the increased reliability obtainable by both testing and backfitting of improvements before series production. A typical example is given of how such a decision can be made. Examples are also given of the effects of not enough testing. The importance of both land based tests and at sea tests are indicated. Since increased capability is usually sought from gas turbine systems, the design evaluation may include components and subsystems which have never been to sea before. Also, if components have been qualified under conditions simulating 'at sea' operation, they may not have been matched in the combination offering the best payoff. The risk and cost assessment, therefore, identifies the potential contribution with a level of risk. It also shows the type and degree of testing required to prove the component, subsystem, and system satisfactory. Testing of gas turbine systems is to evaluate, resolve problems and provide assurance that interface engineering considerations have been designed to meet operational requirements in a reasonable test period. But findings, not originally sought, can be equally valuable. Examples are given from many experienced at the machinery system test and evaluation facilities of the Naval Ship Engineering Center, Philadelphia Division and also shipboard tests. Significant results have reached into improved performance, high reliability, lower construction costs and shorter repair periods. Although the Division facilities and staff, unique in the Western Hemisphere, are intended for U. S. Navy tasks, they are also used by other government branches, commercial organizations under certain conditions and have bean used by other governments and their contractors.


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    Title :

    Marine gas turbine systems and component selection and testing


    Additional title:

    Schiffs-Gasturbinen: Komponentenauswahl und -prüfung


    Contributors:


    Publication date :

    1975


    Size :

    36 Seiten, 11 Bilder, 7 Tabellen, 19 Quellen


    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English




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