大型客机后缘襟翼滑轨整流罩气动外形设计方法

大型客机后缘襟翼机构伸出机翼下表面会带来气动损失,必须设计相应整流罩。整流罩的外形尺寸对气动力影响较大,会直接影响飞机的气动特性。设计整流罩时应该遵循整流罩外形设计要求,使其引起的高速巡航阻力尽可能小。在查阅相关文献、对比研究大量整流罩图片、分析研究计算机辅助设计(CAD)中NURBS曲面曲线描述方法的基础上,建立了一套详细的大型客机后缘襟翼滑轨整流罩外形设计方法,该方法在满足整流罩包裹住机构、减小气动损失等基本要求的同时,缩短了整流罩设计周期。

Aerodynamic Design on a Fairing for the Mechanism of Trailing Edge Flap on Large Aircraft

The large civil aircraft require a corresponding fairing for the mechanism of trailing edge flap which extends out of the wing surface and brings the aerodynamic losses. The dimension and figure of fairing has a great effect on the aerodynamic characteristics of the aircraft. When designing the fairing, the fairing shape design disciplines should be complied with strictly, in order to make the drag during high-speed cruise as small as possible. In the basis of consulting relevant literature and a large number of fairing pictures, by using of the NURBS method in the computer-aided design(CAD),a set of detailed design method of a fairing shape of tracked flaps for large civil aircrafts is formulated. As aresult of this method, the fairing can package mechanism, reduce aerodynamic losses, at the same time it can also shorten fairing design period.