| 摘要 |
The invention relates to aircraft engineering and can be used for improving aerodynamic quality of helicopters, aeroplanes, including traditionally designed airbuses and amphibian airplanes, ground-effect crafts and air-cushion vehicles, possibly by redesigning them. The aim of the invention is to reduce flying drag, possibly by redesigning an aircraft, a helicopter, a ground-effect craft and an air-cushion vehicle. The technical result is achieved by reducing a contacting area between the external surface of the fuselage tail section and a high-speed air flow. For this purpose, the above-mentioned contacting area is reduced by the increased area of orifices in the fuselage tail section; in order to increase the lifting force without increasing pressure resistance, the bottom of the aerodynamic channel is designed convex upwards, for example curved upwards along the shape of the convex side of the airfoil section. The top orifice in the skin of the aerodynamic channel can be located under the middle part of the fin and length wisely divided by said fin to the right and to the left, for example in two. The inventive redesign makes it possible to reduce the total drag of the fuselage and respectively reduce the required engine thrust. |
