当前位置: X-MOL 学术Acta Astronaut. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Parameterized modeling and optimization of reusable launch vehicles based on reverse design approach
Acta Astronautica ( IF 3.5 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.actaastro.2020.08.033
Jun-xue Leng , Yang Shen , Tian-tian Zhang , Wei Huang , Li Yan

Abstract Hypersonic vehicles have been paid more and more attention by various countries, and many developed countries have set off a competition of hypersonic technology. Under this background, this paper creatively applies the reconstruction method based on three vanishing points to the reconstruction of complex aircraft for the first time. The shape of aircraft is restored by photos from different angles, which provides a good help for preliminarily understanding and mastering the information of international mainstream advanced aircraft. In this paper, the feasibility of the whole method is verified by the classical X-37B model, and its three-dimensional structure model can be obtained relatively accurately. In terms of aerodynamic performance evaluation, the panel method is adopted to evaluate the aerodynamic performance on the basis of verifying the reliability of the engineering method. And the results show that the lift-to-drag ratio reaches the maximum of 1.22 at the angle of attack of 25°. This is quite similar to the CFD calculation of class X-37B model in other literatures. The accuracy of the model makes up for the error of the engineering estimation method to a certain extent. In view of the inaccuracy of the wing reconstruction, the genetic algorithm is used to optimize its aerodynamic performances. The lift-to-drag ratio of the wing is increased by 26.3% at 25°, which leads to an increase of 4.35% in the optimal angle of attack lift-to-drag ratio of the whole model. At last, the modularization programming approach is adopted in the optimization process, ensuring the generality of this method, and the whole method will have a broad application prospect.

中文翻译:

基于逆向设计的可重复使用运载火箭参数化建模与优化

摘要 高超声速飞行器越来越受到各国的重视,许多发达国家掀起了高超声速技术的竞争。在此背景下,本文创造性地将基于三个消失点的重建方法首次应用于复杂飞机的重建。通过不同角度的照片还原飞机的外形,为初步了解和掌握国际主流先进飞机的信息提供了很好的帮助。本文通过经典的X-37B模型验证了整个方法的可行性,可以比较准确地得到其三维结构模型。在空气动力性能评估方面,在验证工程方法可靠性的基础上,采用面板法对气动性能进行评价。结果表明,在25°攻角时升阻比达到最大值1.22。这与其他文献中X-37B类模型的CFD计算非常相似。模型的准确性在一定程度上弥补了工程估算方法的误差。针对机翼重建不准确的问题,采用遗传算法对其气动性能进行优化。机翼升阻比在25°时提高了26.3%,从而使整个模型的最佳迎角升阻比提高了4.35%。最后,在优化过程中采用模块化编程方法,
更新日期:2021-01-01
down
wechat
bug