弹性飞机空投载荷设计技术

doi:10.7527/S1000-6893.2014.0068

Abstract

Abstract:

Airdrop analysis is one of the maneuvers concerned by flight loads design. The state of the art in the airdrop load design mainly applies to the rigid aircraft, and it cannot solve the airdrop load design for the flexible aircraft encountering gust. In order to improve the precision of airdrop load design, dynamic response and structural load analysis approach considering the elastic vibration modes of the flexible aircraft encountering gust is presented. The key challenge of dynamic response analysis for flexible aircraft airdrop is the modeling method for linear time-variant system. Employing the stationary-basis method, dynamic response equations for flexible aircraft airdrop are established. The minimum-state (MS) method is employed to carry out rational aerodynamic approximation. A hybrid approach is employed to obtain the discrete gust load in time domain. The single heavy cargo airdrop is simulated numerically, focusing on the force from cargo to aircraft and the wing's load. Simulation results demonstrate that the dynamic response analysis method for flexible aircraft proposed in this paper can represent the airdrop load of aircraft and supply a technique to airdrop load for flexible aircraft.

Key words: flexible aircraft, airdrop, cargo moving, gust, flight loads

CLC Number:

V215.3

JING Zhiwei, HOU Zongtuan, GUO Zhaodian. Flight Loads Design Technique for Flexible Aircraft Airdrop[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2014, 35(11): 3037-3045.

References

[1] Chinese PLA General Armament Department. GJB67.2A—2008 Military airplane structural strength specification[S]. Beijing: Chinese PLA General Armament Department, 2008. (in Chinese) 中国人民解放军总装备部. GJB67.2A—2008 军用飞机结构强度规范[S]. 北京: 中国人民解放军总装备部, 2008.

[2] United States Department of Defense. JSSG-2006 Joint service specification guide[S]. Washington, D.C.: United States Department of Defense, 1998.

[3] Wang Z Y. Aircraft loads design manual[M]. Beijing: Aeronautics and Astronautics Industry Ministry, 1990: 28-30. (in Chinese) 王仲燕. 飞机设计载荷计算指南[M]. 北京: 航空航天工业部, 1990: 28-30.

[4] Hu Z F, Xiao Y L. Two distinctive methods for studying the motion of an aircraft with a cargo moving inside its cabin, BH-B550[R]. Beijing: Beijing Institute of Aeronautics and Astronautics, 1980. (in Chinese) 胡兆丰,肖业伦. 货物在货舱内移动时飞机运动的研究方法, BH-B550[R]. 北京: 北京航空学院, 1980.

[5] Sun B T. A real-time simulation software of sequential airdropping of cargoes from aircraft and its application[J]. Journal of Beijing University of Aeronautics and Astronautics, 1994, 20(1): 71-77.(in Chinese) 孙宝亭. 飞机连投货物实时仿真软件及应用[J]. 北京航空航天大学学报, 1994, 20(1): 71-77.

[6] Yang C X, Ke P. Development and validation of the multi-body simulation software for the heavy cargo airdrop system, AIAA-2007-2572[R]. Reston: AIAA, 2007.

[7] Chen J, Shi Z K. Aircraft modeling and simulation with cargo moving inside[J]. Chinese Journal of Aeronautics, 2009, 22(2): 191-197.

[8] Yang Y, Lu Y P. Backstepping sliding mode control for super-low altitude heavy cargo airdrop from transport plane[J]. Acta Aeronautica et Astronautica Sinica, 2012, 33(12): 2301-2312. (in Chinese) 杨雨, 陆宇平. 运输机超低空重装空投纵向反步滑模控制研究[J]. 航空学报, 2012, 33(12): 2301-2312.

[9] Yang M S, Qu X J. Flight dynamic modeling and simulation for transport airdrop[J]. Flight Dynamics, 2010, 28(3): 9-12. (in Chinese) 杨妙升, 屈香菊. 运输机空投的飞行动力学建模及仿真[J]. 飞行力学, 2010, 28(3): 9-12.

[10] Wu Z G, Yang C, Jing Z W, et al. Dynamic response analysis of airdrop for flexible aircrafts[J]. Journal of Beijing University of Aeronautics and Astronautics, 2011, 37(10): 1211-1217. (in Chinese) 吴志刚, 杨超, 荆志伟, 等. 弹性飞机货物投放动响应分析[J]. 北京航空航天大学学报, 2011, 37(10): 1211-1217.

[11] Wu Z G, Jing Z W, Yang C. Dynamic response analysis and experimental validation for airdrop of a flexible aircraft, AIAA-2012-1468[R]. Reston: AIAA, 2012.

[12] Cuthbert P A, Desabrais K J. Validation of a cargo airdrop software simulator, AIAA-2003-2133[R]. Reston: AIAA, 2003.

[13] Richard B, Justin B, Joseph M. The new military applications of precision airdrop systems, AIAA-2005-7069[R]. Reston: AIAA, 2005.

[14] Brower A M, Alexander R M. A general approach to modal analysis for time-varying systems, AIAA-1988-2356[R]. Reston: AIAA, 1988.

[15] Karpel M. Design for active flutter suppression and gust alleviation using state-space aeroelastic modeling[J]. Journal of Aircraft, 1982, 19(3): 221-227.

[16] Zona Technology. Zaero user's manual[M]. Scottsdale: Zona Technology, 2006: 235-239.

Flight Loads Design Technique for Flexible Aircraft Airdrop

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