STP520: Thermoacoustic Fatigue Testing Facility for Space Shuttle Thermal Protection System

    Rucker, CE
    Aero space technologist and aerospace technologist, National Aeronautics and Space Administration, Langely Research Center, Hampton, Va.

    Grandle, RE
    Aero space technologist and aerospace technologist, National Aeronautics and Space Administration, Langely Research Center, Hampton, Va.

    Pages: 9    Published: Jan 1973


    Abstract

    The development of a reusable space shuttle by NASA in the next decade depends in part on the design of a satisfactory thermal protection system (TPS). The booster and orbiter parts of the shuttle require TPS panels which will withstand thermoacoustic fatigue. The Langley Research Center has begun tests on early panel designs in a new acoustic fatigue facility which is capable of simulating the combined elevated temperature and acoustic environments which these panels are expected to experience. The capabilities of the facility and computer system are outlined, and problems encountered in establishing the test methods are discussed. The digital computer system which controls the acoustic and thermal test sequence and which records data from more than 20 transducers is described. Tests of a Haynes 25 TPS panel are described, and representative data from tests of the panel at 650 C are included.

    Keywords:

    fatigue (materials), acoustic environments, computerized simulation, fatigue tests, control equipment, structural analysis, temperature measurement, test facilities, environmental tests, high temperature tests, thermal environments, thermal cycling tests, automatic control, digital computers, digital techniques


    Paper ID: STP38844S

    Committee/Subcommittee: E08.05

    DOI: 10.1520/STP38844S


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