To reduce the negative pressure peak above the main wing and delay the generation of impact waves and reduce wave resistance by providing a fluid control device such as an engine nacelle in a predetermined position on top of the main wing and actively superposing the air current generated by this fluid control device on the air current above the main wing.

When an engine nacelle is provided on top of the main wing and the front/back directional position of the front end of the engine nacelle is set in the range of 63% to 100% from the front end of the wing chord of the main wing (b, i), impact waves are generated on top of the main wing in the transonic velocity region such that wave resistance is prevented from increasing, which enables cruising speed to be increased while avoiding an increase in fuel consumption. If the front end of the engine nacelle is farther forward than a position of 63% of the wing chord (e, f), the effect of preventing impact waves is unable to be displayed and wave resistance increases.