An Alternate Configuration for a Regional Transport Airplane

抄録

A blended-wing-body airplane is in essence a flying wing configuration. The flying wing is regarded as an alternate configuration to reduce drag and structural weight. This paper presents the design process of a medium size Blended-Wing-Body airplane. Because of the abrupt change of thickness and chord distribution, it requires special design tools. In the present study, the wing surface is generated by the use of the RAPID method. Takanashi’s inverse design method is used to obtain the airfoil shape. The required target pressure distribution is specified by the constrained target pressure specification technique. The constraints include the space requirement and the requirements on the aerodynamic performances. Our study shows that the proposed design tools overcome the design difficulties.