Effect of the supersonic transport configuration on the sonic boom parameters
V.M. Fomin, V.F. Chirkashenko, V.F. Volkov, A.M. Kharitonov
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS
chirkash@itam.nsc.ru, volkov@itam.nsc.ru
Keywords: supersonic flow, sonic boom, tandem configuration, numerical calculation, wind tunnel, measurements in the near zone
Pages: 509-522
Abstract
Results of numerical and experimental investigations of the sonic boom parameters for two configurations of civil supersonic transport are presented. Numerical modelling is performed by a combined method based on calculating the spatial flow in the near zone of the aircraft configuration and subsequent determination of disturbed flow parameters at large distances from the examined model. Numerical results are compared with experimental sonic boom parameters measured in the near zone and with results of their recalculation to large distances within the framework of the quasi-linear theory. This validation allows the degree of adequacy of the inviscid Euler model for solving the posed problem to be determined. Reasons for certain disagreement between the calculated and experimental data are discussed. The analysis confirms the possibility of attenuating the sonic boom generated by supersonic transport with an unconventional configuration based on a tandem arrangement of two wings on the fuselage.
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