1–11 von 11 Ergebnissen
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    Two methods of evaluating climbout noise

    Copeland, W. L. | NTRS | 1968

    Factors relating to the airport-community noise problem

    Cawthorn, J. M. / Copeland, W. L. / Hubbard, H. H. | NTRS | 1965

    Research approaches to alleviation of airport community noise.

    Copeland, W. L. / Hubbard, H. H. / Maglieri, D. J. | NTRS | 1967

    Turbojet-engine noise studies to evaluate effects of inlet-guide-vane-rotor spacing

    Copeland, W. L. / Crigler, J. L. / Morris, G. J. | NTRS | 1968

    Research approaches to alleviation of airport community noise.

    Copeland, W. L. / Hubbard, H. H. / Maglieri, D. J. | NTRS | 1967

    Development and flight tests of vortex-attenuating splines

    Hastings, E. C., Jr. / Patterson, J. C., Jr. / Shanks, R. E. et al. | NTRS | 1975