抄録
A low-boom design method using a reversed equivalent area (Ae,r) and an aging process is proposed for aft-boom shaping that is affected by three-dimensionality of a flow field. Because near-field pressure distributions are used to calculate Ae,r, three-dimensionality of a flow field is captured by Ae,r. However, nonlinear effects appeared in the pressure propagation from a body to a near-field location is not considered in the calculation of Ae,r, which reduces the accuracy of Ae,r. Thus, an aging process is inversely applied in order to calculate accurate Ae,r. The present method is applied to aft-boom shaping of a small-sized supersonic transport. The inversely applied aging process enables accurate estimation of required Ae,r distribution for aft-boom shaping, which realizes the low-boom signature in accordance with the design intent.
