Noise measurements were made of the Concorde 02 aircraft during operations at Dallas-Ft. Worth and Dulles International Airports in September 1973. Data were acquired at 25 sites surrounding Dallas and 15 sites surrounding Dulles. The results are reported in terms of various noise evaluation measures (A-level, Effective Perceived Noise Level, etc.) and correlated with respect to distance and aircraft/engine operating parameters. Included are representative one-third octave band spectra for takeoff and approach operations at Dulles. A prediction procedure is presented based upon data measured at various distances extrapolated to larger distances by standard methods. The results of the semiempirical predictions indicate that there is no reason to believe that the noise levels measured and reported by the Concorde developers cannot be achieved with the use of noise abatement procedures. However, noise abatement takeoff procedures were not fully utilized at Dulles and, as a result, the measured noise levels exceed the values claimed by the developers.

4to. For Sale by the National Technical Information Service (Price upon application). Contract 68-01-1599. Text on p. 3 of cover. "550/9-74-013." Includes bibliographical references (page 49).