A test fixture for measuring the dynamic performance of candidate high-temperature engine seal concepts has been installed at NASA Lewis Research Center. The test fixture has been designed to evaluate seal concepts under development for advanced hypersonic engines, such as those being considered for the National Aerospace Plane (NASP). The fixture can measure dynamic seal leakage performance from room temperature up to 840 Cel and air pressure differentials up to 690 kPa (100 psi). Performance of the seals can be measured while sealing against flat or distorted walls. In the fixture two seals are preloaded against the sides of a 30 cm (1 ft) long saber that slides transverse to the axis of the seals, simulating the scrubbing motion anticipated in these engines. This report covers the capabilities of this test fixture along with preliminary data showing the dependence of seal leakage performance on high temperature cycling.


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    Title :

    A hot dynamic seal rig for measuring hypersonic engine seal durability and flow performance


    Additional title:

    Eine dynamische Dichtungsdynamik für hohe Temperaturen zur Messung der Standzeit der Dichtung und der Strömungsleistung in Hypersonictriebwerken


    Contributors:
    Miller, J.H. (author) / Steinetz, B.M. (author) / Sirocky, P.J. (author) / Kren, L.A. (author)


    Publication date :

    1993


    Size :

    9 Seiten, 7 Bilder, 7 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    A HOT DYNAMIC SEAL RIG FOR MEASURING HYPERSONIC ENGINE SEAL DURABILITY AND FLOW PERFORMANCE

    MILLER, JEFFREY / STEINETZ, BRUCE / SIROCKY, PAUL et al. | AIAA | 1993


    Hot dynamic test rig for measuring hypersonic engine seal flow and durability

    Miller, Jeffrey H. / Steinetz, Bruce M. / Sirocky, Paul J. et al. | AIAA | 1994



    Toward an Improved Hypersonic Engine Seal

    Dunlap, Patrick / Steinetz, Bruce / DeMange, Jeff | AIAA | 2003


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    Agarwal, V. / Howe, J. / Malak, M. et al. | British Library Conference Proceedings | 2006