A preliminary analysis correlating peaks from sonic boom pressure signatures recorded during the descent trajectory of the Orbiter Columbia, which landed in the dry lake bed at Edwards Air Force Base (EAFB), California, with measured wind tunnel signatures extrapolated from flight altitudes to the ground has been made for Mach numbers ranging from 1.3 to 6. The flight pressure signatures were recorded by microphones positioned at ground level near the groundtrack, whereas the wind tunnel signatures were measured during a test of a 0.0041-scale model Orbiter. The agreement between overpressure estimates based on wind tunnel data using preliminary flight trajectory data and oscillograph traces from ground measurements appears reasonable at this time for the range of Mach numbers considered. More detailed studies using final flight trajectory data and digitized ground measured data will be performed.


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    Title :

    Preliminary Sonic Boom Correlation of Predicted and Measured Levels for STS-1 Entry


    Contributors:
    F. Garcia (author) / K. M. Morrison (author) / J. H. Jones (author) / H. R. Henderson (author)

    Publication date :

    1982


    Size :

    38 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English