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针对某支线客机,从工程设计的角度,完成了该客机增升装置的气动优化设计。首先根据飞机的相关参数确定增升装置所要达到的气动目标,设计增升装置在机翼的展向和弦向的类型和布置方式,从而确定增升装置的总体设计方案。在二维增升装置设计中,使用NURBS曲线参数化拟合多段翼型缝道部分的外形,通过数值模拟方法和优化算法对三段翼型的缝道外形和缝道参数进行优化设计,最终确定了三段翼型起飞、着陆构型,提出一种二维三段翼型(前缘缝翼、主翼、后缘襟翼)的参数化优化设计方法。在三维增升装置设计中,根据增升装置在机翼展向和弦向的布置方式,取若干关键截面,按照三段翼型的优化结果生成三维增升装置。对三维增升起飞构型和着陆构型的气动特性分析评估表明,所设计的三维增升装置满足设定的气动目标。
For a regional airliner, from the perspective of engineering design, the aerodynamic optimization design of the passenger aircraft elevating device is completed. Firstly, the aerodynamic target to be achieved by the lifting device is determined according to the relevant parameters of the aircraft, the type and arrangement of the chord direction of the lifting device in the wing are designed, and the overall design of the lifting device is determined. In the design of two-dimensional lifting device, NURBS curve is used to parameterize the profile of the multi-section airfoil. The numerical simulation method and optimization algorithm are used to optimize the slot profile and slot parameters of the three-section airfoil. Finally, The three-section airfoil take-off and landing configurations were determined, and a parametric optimization design method of two-dimensional three-section airfoils (leading edge slats, main wing and trailing edge flaps) was proposed. In the design of three-dimensional lifting device, several key sections are taken according to the arrangement of the lifting device in the chordwise direction of the wing, and the three-dimensional lifting device is generated according to the optimization result of the three-section airfoil. The aerodynamic characteristics of the three-dimensional take-off and landing configurations are evaluated and evaluated to show that the designed three-dimensional elevating device meets the set aerodynamic targets.