Numerical Simulation Investigations of Unsteady Flow

Unsteady aerodynamic modeling and identification for a complicated aircraft configurations

  • YANG Wen ,
  • BU Chen ,
  • SUI Jianjun ,
  • SHANG Zuming
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  • Department of Aerodynamics Development, AVIC Aerodynamics Research Institute, Harbin 150001, China

Received date: 2016-01-25

  Revised date: 2016-03-14

  Online published: 2016-04-06

Abstract

Adequate modeling of nonlinear and unsteady aerodynamics at high angle of attack flight is important for the design of future fighters with high maneuverability and stealth as well as for the improved prediction of normal aircraft configuration's dynamics. The limitations for conventional aerodynamic derivatives model based on longitudinal small amplitude experimental date and large amplitude experimental date at high angle of attack had been analyzed. The dynamic linear and nonlinear aerodynamic model approximating the vertical and separated flow time lag effects is considered along with the conventional aerodynamic model. Using the model the unsteady aerodynamics of one aircraft in typical maneuver simulation tests is predicted. It is suggested that the structural modification of nonlinear differential equation model proposed in this paper is valid in different maneuvers for complicated aircraft configurations, which bears proof on the practicality of the flight dynamics analysis.

Cite this article

YANG Wen , BU Chen , SUI Jianjun , SHANG Zuming . Unsteady aerodynamic modeling and identification for a complicated aircraft configurations[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016 , 37(8) : 2464 -2471 . DOI: 10.7527/S1000-6893.2016.0094

References

[1] JARRAH M A. Low speed wind tunnel investigation of flow about delta wings oscillating in pitch to very high angle of attack:AIAA-1989-0295[R]. Reston:AIAA, 1989.
[2] BRANDON J M, SHAH G H. Unsteady aerodynamic characteristics of fighter model undergoing large-amplitude pitching motions at high angles of attack:AIAA-1990-0309[R]. Reston:AIAA,1990.
[3] ROBERT C N. The unsteady aerodynamics of slender wings and aircraft undergoing large amplitude maneuvers[J]. Progress in Aerospace Sciences, 2003, 39(3):185-248.
[4] ABZUG M J, LARRAB E. Airplane stability and control[M]. Cambridge:Cambridge University Press, 1977:165.
[5] LIN G F, LAN C E, BRANDON J M. A generalized dynamic aerodynamic coefficient model for flight dynamics applications:AIAA-1997-3643[R]. Reston:AIAA, 1997.
[6] TOBAK M, SCHIFF L. On the formulation of the aerodynamic characteristics in aircraft dynamics:NASA TRR-456[R]. Washington, D.C.:NASA, 1976.
[7] GHOREYSHI M, JIRASEK A, POST M L. A computational investigation into the use of response functions for a aerodynamic loads modeling:AIAA-2010-3518[R]. Reston:AIAA, 2010.
[8] KLEIN V, MURPHY P C. Estimation of aircraft nonlinear unsteady parameters from wind tunnel data:NASA TM-1998-208[R]. Washington, D.C.:NASA, 1998.
[9] GOMAN M G, KHRABROV A N. State-space representation of aerodynamic characteristics of an aircraft at high angels of attack[J]. Journal of Aircraft, 1994, 31(5):1109-1115.
[10] YI G F, FREDERICK H, LUTZE. Identification of unsteady aerodynamic modeling at high angle of attack:AIAA-1996-3407-CP[R]. Reston:AIAA, 1996.
[11] 杨文, 尚祖铭, 卜忱. 一种基于升力面分解思想的横向状态空间模型[J]. 飞行力学, 2014, 32(5):463-467. YANG W, SHANG Z M, BU C. An lateral-directional state-space model based the idea of splitting the aircraft into several lifting surfaces or panels[J]. Flight Dynamics, 2014, 32(5):463-467(in Chinese).
[12] ABRAMOV M, GOMAN M G. Aircraft dynamics at high incidence flight with account of unsteady aerodynamic effects:AIAA-2004-5274[R]. Reston:AIAA,2004.
[13] ABRAMOV N B, GOMAN M G, KHRABROV A N, et al. Simple wings unsteady aerodynamics at high angles of attack:Experimental and modeling results:AIAA-1999-4013[R]. Reston:AIAA,1999.
[14] 龚正, 沈宏良. 非定常气动力非线性微分方程建模方法[J]. 航空学报, 2010, 32(1):83-90. GONG Z, SHEN H L. Unsteady aerodynamic modeling method using nonlinear differential equations[J]. Acta Aeronautica et Astronautica Sinica, 2010, 32(1):83-90(in Chinese).
[15] WANG Z J, LAN C E. Fuzzy logic modeling of lateral-directional unsteady aerodynamics:AIAA-1999-4012[R]. Reston:AIAA, 1999.
[16] ZHONG J, WANG C, EDWARD L. Fuzzy logic modeling of nonlinear unsteady aerodynamics:AIAA-1998-4351[R]. Reston:AIAA,1998.
[17] WANG Q, HE K F. Unsteady aerodynamics modeling for flight dynamics application[J]. Acta Mechanica Sinica, 2012, 28(1):14-23.
[18] 史志伟, 明晓. 基于模糊聚类的模糊神经网络在非定常气动力建模中的应用[J]. 空气动力学学报, 2005, 23(1):21-24. SHI Z W, MING X. The application of FNN in unsteady aerodynamics modeling based on fuzzy clustering[J]. Acta Aerodynamic Sinica, 2005, 23(1):21-24(in Chinese).
[19] ALCORN C W. The X-31 aircraft advances in aircraft agility and performance[J]. Progress Aerospace Science, 1996, 15(32):377-413.
[20] 汪清, 蔡金狮.飞机大迎角非定常气动力建模与辨识[J]. 航空学报, 1996, 17(4):391-398. WANG Q, CAI J S. Unsteady aerodynamic modeling and identification of airplane at high angles of attack[J]. Acta Aeronautica et Astronautica Sinica, 1996, 17(4):391-398(in Chinese).

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