弹性飞机平衡的阵风外载荷计算与分析

严德; 杨超; 肖志鹏

弹性飞机平衡的阵风外载荷计算与分析

1.
北京航空航天大学航空科学与工程学院, 北京 100191
2. 北京民用飞机技术研究中心, 北京 100083

基金项目: 北京航空航天大学"凡舟"青年科研基金资助项目(20100505)

详细信息

中图分类号: V 211.47
计量
- 文章访问数: 2200
- HTML全文浏览量: 262
- PDF下载量: 582
- 被引次数: 0
出版历程
- 收稿日期: 2012-04-19
- 网络出版日期: 2012-10-30

Balanced external gust loads computation and analysis for elastic aircraft

1.
School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
2. Beijing Aeronautical Science & Technology Research Institute, Beijing 100083, China

摘要

摘要: 连续紊流是适航规范中阵风载荷分析必须考虑的一种阵风模型,但其引起的阵风载荷在飞机结构设计中的应用一直存在困难.在平稳随机过程的假设下,基于von Karman连续紊流功率谱模型和线性系统连续紊流响应的功率谱方法,使用载荷累加法获得外载荷形式的阵风载荷.在此基础上,通过引入载荷响应的相关性推导并建立了一种生成多组连续紊流平衡外载荷分布的方法.垂向连续紊流情况下的算例结果表明:连续紊流外载荷分布是全机平衡的.平衡的外载荷分布可通过机动飞行载荷分析中的载荷包线方法识别载荷设计情况,从而应用于飞机结构的强度分析与设计.
- 气动弹性 /
- 弹性飞机 /
- 连续紊流 /
- 平衡外载荷分布
Abstract: Continuous turbulence is one of gust models for gust loads analysis needed in various aviation regulations. But there exit some difficulties when the loads induced by continuous turbulence applied to aircraft structural design. Based on stationary random process assumption, utilizing power spectral density (PSD) method and von Karman continuous turbulence model, external gust loads were obtained by using force summation method. An approach was presented by introducing correlations and multiple sets of external load distributions due to continuous turbulence was generated. The results from an elastic aircraft encountering vertical continuous turbulence demonstrate that the external gust load distributions are strictly in banlance. These load distributions can be applied to structural stress analysis or design when the design conditions are identified through load envelope concept which is frequently applied in maneuvering flight loads analysis.
- aeroelasticity /
- flexible aircraft /
- continuous turbulence /
- balanced external force distribution

HTML全文

参考文献(19)

[1]	Bisplinghoff R L,Ashley H,Halfman R L.Aeroelasticity[M].Cambridge,Massachusetts:Addison-Wesley Publishing Corp,1955:673
[2]	陈桂彬,邹丛青,杨超.气动弹性设计基础[M].北京:北京航空航天大学出版社,2004:8-10 Chen Guibin,Zou Congqing,Yang Chao.The basis of aeroelastic design[M].Beijing:Beihang University Press,2004:8-10 (in Chinese)
[3]	CCAR-25 中国民用航空规章第25部运输类飞机适航标准[S] CCAR-25 Civil aviation administration of China[S](in Chinese)
[4]	Barnes T J.Overview of the activities of the AD Hoc committee of international gust specialists .AGARD R-798,1995
[5]	管德.气动弹性力学手册[M].北京:航空工业出版社,1994:143-150 Guan De.The manual of aeroelasticity[M].Beijing:Aviation Industry Press,1994:143-150 (in Chinese)
[6]	赵继伟,胡赞远.民用飞机阵风载荷及减缓技术研究[J].民用飞机设计与研究,2012(1):17-20 Zhao Jiwei,Hu Zanyuan.Research on gust load and its load alleviation technology of civil aircraft[J].Civil Aircraft Design and Research,2012(1):17-20 (in Chinese)
[7]	吴志刚,陈磊,杨超,等.弹性飞机阵风响应建模与减缓方案设计[J].中国科学:技术科学,2011,41(3):394-402 Wu Zhigang,Chen Lei,Yang Chao,et al.Gust response modeling and alleviation scheme design for an elastic aircraft[J].SCI China:Tech SCI,2011,41(3):394-402 (in Chinese)
[8]	Pototzky A S,Zeiler T A.Calculating time-correlated gust loads using matched filter and random process theories[J].Journal of Aircraft,1991,28(5):346-352
[9]	Jones J G.Statistical discrete gust method for predicting aircraft loads and dynamic response[J].Journal of Aircraft,1989,26(4):382-392
[10]	Fidkowski K J,Engelsen F,Willcox K E,et al.Stochastic Gust analysis techniques for aircraft conceptual design .AIAA 2008-5848,2008
[11]	Fuller J R,Richmond L D,Larkins C D,et al.Contributions to the development of a power-spectral gust design procedure for civil aircraft .FAA TR FAA-ADS-54,1966
[12]	Hoblit F M.Gust loads on aircraft:concepts and applications[M]. :AIAA Publications,1988:107-113
[13]	Stauffer W A,Hoblit F M.Dynamic gust,landing,and taxi loads determination in the design of the L-1011[J].Journal of Aircraft,1973,10(8):459-467
[14]	Stauffer W A,Lewolt J G,Hoblit F M.Application of advanced methods to design loads determination for the L-1011 transport [J].Journal of Aircraft,1973,10(8):449-458
[15]	Hajela P,Bach C T.Optimum structural sizing for gust-induced response .AIAA 88-2298,1988
[16]	Engelsen F.Design-oriented gust stress constraints for aeroservoelastic design synthesis .Washington D C:Department of Aeronautics and Astronautics,University of Washington,2001
[17]	《飞机设计手册》总编委会.飞机设计手册第9册[M].北京:航空工业出版社,2002:1242-1248 Aircraft Design Manual for the General Editorial Board.The aircraft design manual book 9[M].Beijing:Aviation Industry Press,2002:1242-1248 (in Chinese)
[18]	Jonge J B,Vink W J.Gust load conditions for fatigue tests based on a continuous gust concept .AIAA 97-1279,1997
[19]	邓立东,李天,薛晓春.飞机非线性飞行载荷计算方法研究[J].航空学报,2002,23(4):317-320 Deng Lidong,Li Tian,Xue Xiaochun.Calculation method about nonlinear flightloads of a aircraft[J].Acta Aeronautica et Astronautica Sinica,2002,23(4):317-320 (in Chinese)