翼身融合布局民机克鲁格襟翼设计

doi:10.7527/S1000-6893.2019.23048

翼身融合民机技术专栏

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翼身融合布局民机克鲁格襟翼设计

张明辉¹, 陈真利¹, 毛俊², 王刚¹, 谭兆光², 王龙³, 张彬乾¹

1. 西北工业大学航空学院, 西安 710072;
2. 中国商用飞机有限责任公司上海飞机设计研究院, 上海 201210;
3. 航空工业惠阳航空螺旋桨有限责任公司, 保定 071051

收稿日期:2019-03-22 修回日期:2019-04-03 出版日期:2019-09-15 发布日期:2019-04-28
通讯作者: 陈真利 E-mail:zhenlichen@nwpu.edu.cn
基金资助:
中央高校基本科研业务费专项资金（3102019JC009，G2016KY0002）

Design of Krueger flap for civil aircraft with blended-wing-body

ZHANG Minghui¹, CHEN Zhenli¹, MAO Jun², WANG Gang¹, TAN Zhaoguang², WANG Long³, ZHANG Binqian¹

1. School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China;
2. Shanghai Aircraft Design and Research Institute, Commercial Aircraft Corporation of China, Ltd., Shanghai 201210, China;
3. AVIC Huiyang Aviation Propeller Co., Ltd., Baoding 071051, China

Received:2019-03-22 Revised:2019-04-03 Online:2019-09-15 Published:2019-04-28
Supported by:
The Fundamental Research Funds for the Central Universities(3102019JC009, G2016KY0002)

摘要/Abstract

摘要： 翼身融合（BWB）布局是"绿色航空"发展目标的下一代大型民用飞机的理想布局。由于高度融合的外形特点，BWB布局难以通过应用传统增升装置实现低速增升与配平的协调设计。本文采用开缝钝头克鲁格襟翼提高BWB布局低速失速特性。首先，构建了克鲁格襟翼二维参数化方法，该方法符合克鲁格襟翼运动机构特点，可准确描述几何外形与缝道配置。其次，开展克鲁格襟翼几何参数与偏转角度的影响规律研究，分析流动形态与增升机理，提出设计原则。综合考虑外形、运动机构与遮蔽效应等设计约束，以提高增升能力为目标，开展前缘开缝克鲁格襟翼优化设计。优化设计结果满足设计约束，数值分析表明其增升能力比初始外形与经典缝翼均有明显提高。最终，采用前缘开缝克鲁格襟翼与后缘简单襟翼构建BWB增升构型，数值模拟与风洞试验结果表明，增升方案能够实现升力系数要求，降低了对配平能力的需求，减小了增升装置和高升力配平设计压力。提出的克鲁格襟翼设计方法不仅适用于BWB布局，也为传统布局民机增升装置设计提供了技术支持。

关键词: 翼身融合, 增升装置, 克鲁格襟翼, 优化设计, 民机

Abstract: The Blended-Wing-Body (BWB) is the most promising candidate for the next generation transport to achieve "green aviation". Due to its unique blended geometric characteristics, the low speed characteristics of BWB can hardly gain enough lift under trimmed condition by applying the traditional high-lift device. The slotted bull-nose Krueger flap is applied to improve the low speed stall characteristics of the BWB configuration. Firstly, a two-dimensional parameterized method for the slotted bull-nose Krueger flap is established to accurately describe the geometry and deployed settings, which accord with the characteristic of actuating mechanism. Then, the effects of Krueger geometry parameters and the deflecting angle are investigated, during which the features of the flow phenomena and high-lift mechanism are studied, and several design principles are proposed. After that, with considerations of geometry, mechanism, and shielding effect constraints, an optimization is conducted to enhance the lift improvement towards a more practical Krueger design. The optimization results for leading edge device satisfy the design constraints and show promising aerodynamic features compared with the initial design and a classic slat design. Finally, a BWB high-lift configuration consisting of leading edge slotted bull-nose Krueger flap and trailing edge simple-hinged flap is established. The aerodynamic characteristics of leading edge device are obtained by numerical simulation and the entire high-lift configuration is studied through wind tunnel experiments. The result shows that this kind of high-lift device is suitable to relieve the pressure of trim and realize sufficient lift gain. The study proves that the Krueger design methodology is suitable for further research and could be applied as a high-lift device for both conventional and innovative configurations.

Key words: blended-wing-body, high-lift device, Krueger flap, optimization design, civil aircraft

中图分类号:

V211.3

张明辉, 陈真利, 毛俊, 王刚, 谭兆光, 王龙, 张彬乾. 翼身融合布局民机克鲁格襟翼设计[J]. 航空学报, 2019, 40(9): 623048-623048.

ZHANG Minghui, CHEN Zhenli, MAO Jun, WANG Gang, TAN Zhaoguang, WANG Long, ZHANG Binqian. Design of Krueger flap for civil aircraft with blended-wing-body[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2019, 40(9): 623048-623048.

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E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

翼身融合布局民机克鲁格襟翼设计

Design of Krueger flap for civil aircraft with blended-wing-body

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