Virginia Tech
    • Log in
    View Item 
    •   VTechWorks Home
    • ETDs: Virginia Tech Electronic Theses and Dissertations
    • Masters Theses
    • View Item
    •   VTechWorks Home
    • ETDs: Virginia Tech Electronic Theses and Dissertations
    • Masters Theses
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    An experimental investigation of the effects of inlet geometry on the performance of a bistable fluid amplifier

    Thumbnail
    View/Open
    LD5655.V855_1972.C643.pdf (2.026Mb)
    Downloads: 107
    Date
    1972
    Author
    Cone, James Cary
    Metadata
    Show full item record
    Abstract
    The effects of varying inlet geometry on the performance of bistable fluid amplifiers were investigated experimentally on a large scale model flip-flop operated with air. Performance curves and power jet velocity profiles were taken for straight, right angle, and layer change entries to the power nozzle of the model. As the power nozzle inlet configurations were varied, the effects of additional parameters (external operating conditions, wall roughness, setback, and other geometric variables) on the amplifier performance were studied. The results are compared with typical commercial bistable fluid amplifiers. When the flow entered the power nozzle from a right angle bend, a bias in the switching characteristics was found. For a fixed supply pressure, the left and the right control pressures differed, which caused the output to be easier to switch toward, or be biased toward, one of the output ports. The power jet velocity profiles were found to be symmetric as the inlet configurations were changed. The magnitude and direction of the biased switching performance induced by inlet geometry was found to be independent of the operating conditions and the wall roughness. The direction of the bias was shown to depend upon the nozzle length, with the direction of the bias reversing for very short power nozzles. Increasing the setback and lengthening the nozzle were both found to decrease the bias. The bias in switching performance was found to be eliminated by the use of change-of-plane entries.
    URI
    http://hdl.handle.net/10919/64601
    Collections
    • Masters Theses [19660]

    If you believe that any material in VTechWorks should be removed, please see our policy and procedure for Requesting that Material be Amended or Removed. All takedown requests will be promptly acknowledged and investigated.

    Virginia Tech | University Libraries | Contact Us
     

     

    VTechWorks

    AboutPoliciesHelp

    Browse

    All of VTechWorksCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    Log inRegister

    Statistics

    View Usage Statistics

    If you believe that any material in VTechWorks should be removed, please see our policy and procedure for Requesting that Material be Amended or Removed. All takedown requests will be promptly acknowledged and investigated.

    Virginia Tech | University Libraries | Contact Us