研究了大型民用飞机前缘缝翼全尺寸静力试验载荷设计技术，以实现对缝翼结构安全性的考核和强度分析方法的验证。针对前缘缝翼尺寸小、曲率大、受载工况复杂的特点，提出了试验基准载荷筛选、试验实施载荷转换和试验加载方案优化的方法，形成了一套符合适航要求的试验载荷设计流程。基于最小安全裕度原则进行试验基准载荷的筛选，建立试验加载局部坐标系将气动分布载荷转换成试验集中载荷，为了准确模拟机翼大变形状态下缝翼的受载状态，对试验载荷进行斜加载。与理论载荷的对比分析结果表明了试验载荷设计的有效性，试验结果表明了所形成的载荷设计技术可以实现对前缘缝翼结构静强度的适航验证。
To examine the safety of the slat structure on large civil aircraft and verify the feasibility of its strength analysis, load design techniques for full scale static test are studied. To address the characteristics of slats such as small size, large curvature and complex load conditions, methods of baseline loads screening, test loads transfer and optimization are proposed, creating a set of load design processes that meet the requirements of airworthiness. Based on the principle of minimum margin of safety, baseline loads were selected. Aerodynamic distribution loads were converted into concentrated loads by setting up local coordinate system. Oblique loads were used to accurately simulate load conditions of slat under large deformation of the wing. The results of comparative analysis with theoretical loads showed the validity of the test load.Test results showed that load design techniques in this paper can be used for the verification of the airworthiness of slat's strength successfully.
[1] 邓一菊, 廖振荣,段卓毅. 前缘缝翼内型的气动设计研究[J]. 空气动力学学报, 2014, 32(3):400-404. DENG Y J, LIAO Z R, DUAN Z Y. Aerodynamic design research on slat coves[J]. Acta Aerodynamica Sinica, 2014, 32(3):400-404(in Chinese).
[2] 杨茵, 陈迎春,李栋. 前缘缝翼尾缘喷流对多段翼流场的影响研究[J]. 空气动力学学报, 2017, 35(2):220-228. YANG Y, CHEN Y C, LI D. Investigation of effects of slat trailing edge jet on multi-element airfoils flowfield[J]. Acta Aerodynamica Sinica, 2017, 35(2):220-228(in Chinese).
[3] 惠增宏, 竹朝霞,张理. 带缝翼多段翼型气动特性的实验研究[J]. 实验流体力学, 2007, 21(2):18-20. HUI Z H, ZHU Z X, ZHANG L. Experimental investigation of aerodynamics performance of multi-element airfoil with leading-edge slat[J]. Journal of Experiments in Fluid Mechanics, 2007, 21(2):18-20(in Chinese).
[4] 李丽雅. 大型飞机增升装置技术发展综述[J]. 航空科学技术, 2015, 26(5):1-10. LI L Y. Review of high-lift device technology development on large aircrafts[J]. Aeronautical Science & Technology, 2015, 26(5):1-10(in Chinese).
[5] 周志杰, 刘佩清,李亚林,等. 大型客机机翼前缘缝翼气动及其机构一体化设计[J]. 民用飞机设计与研究, 2013(1):9-13. ZHOU Z J, LIU P Q, LI Y L, et al. Aero mechanism integrated design platform for the leading edge high lift device on large aircraft[J]. Civil Aircraft Design & Research, 2013(1):9-13(in Chinese).
[6] PANG H, YU T X, SONG B F. Failure mechanism analysis and reliability assessment of an aircraft slat[J]. Engineering Failure Analysis, 2016, 60:261-279.
[7] 中国民用航空局. 中国民用航空规章:运输类飞机适航标准:CCAR-25-R4[S]. 北京:中国民用航空局, 2011. Civil Aviation Administration of China. Chinese civil aviation regulations:Airworthiness standards transport category airplanes:CCAR-25-R4[S]. Beijing:Civil Aviation Administration of China, 2011(in Chinese).
[8] 刘兴科, 刘冰,张建锋. 全尺寸飞机大展弦比机翼静力试验技术研究[J]. 工程与试验, 2014, 54(1):17-20. LIU X K, LIU B, ZHANG J F. Study on static test technology for high-aspect ratio wing of full scale aircraft[J]. Engineering & Test, 2014, 54(1):17-20(in Chinese).
[9] 刘佳. 民用飞机后机身结构静力试验方案设计[J]. 民用飞机设计与研究, 2013(2):10-12. LIU J. Static test method for the after fuselage structure of civil aircraft[J]. Civil Aircraft Design & Research, 2013(2):10-12(in Chinese).
[10] 李卫平, 谭伟,薛彩军,等. 民用飞机发动机吊挂部段静力试验与静强度分析[J]. 南京航空航天大学学报, 2011, 43(6):732-737. LI W P, TAN W, XUE C J, et al. Static test and computational analysis for pylon of airliner engine[J]. Journal of Nanjing University of Aeronautics & Astronautics, 2011, 43(6):732-737(in Chinese).
[11] 陈博, 陆慧莲. 某型民用运输机主起落架连接区结构静力试验术[J]. 民用飞机设计与研究, 2013(3):21-23. CHEN B, LU H L. Static strength test of the main landing gear attachment structure of a type of civil aircraft[J]. Civil Aircraft Design & Research, 2013(3):21-23(in Chinese).
[12] 胡亮文, 宋乾福. 飞机静力试验中机翼的载荷分配研究[J]. 民用飞机设计与研究, 2015(4):9-12. HU L W, SONG Q F. Research on load distribution of wing in aircraft static test[J]. Civil Aircraft Design & Research, 2015(4):9-12(in Chinese).
[13] 匡国强, 季佳佳,何志全. 缝翼尾缘预弯曲设计[J]. 江苏科技信息, 2015(3):55-57. KUANG G Q, JI J J, HE Z Q. Slat trailing edge pre-bending shaped design[J]. Jiangsu Science & Technology Information, 2015(3):55-57(in Chinese).
[14] 庞宝才, 董登科,弓云昭,等. 襟缝翼可动翼面的随动加载方法研究[J]. 机械科学与技术, 2014, 33(10):1591-1593. PANG B C, DONG D K, GONG Y Z, et al. Study on tracking loading method of locomotory wing for flap and slat[J]. Mechanical Science and Technology for Aerospace Engineering, 2014, 33(10):1591-1593(in Chinese).
[15] 《飞机设计手册》总编委会. 飞机设计手册第9册:载荷、强度和刚度[M]. 北京:航空工业出版社, 2001:193-670. General Editorial Board of Aircraft Design Manual. Aircraft design manual (9th volume):Load, strength and stiffness[M]. Beijing:Aviation Industry Press, 2001:193-670(in Chinese).
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