Unsteady aerodynamic model of NACA0012 associated with forced oscillations and translations in transonic flight

被引：0
|
作者：
Zhang Q. [1 ,2 ]
Ye Z. [3 ]
机构：
[1] School of Aircraft, Xi'an Aeronautical University, Xi'an
[2] School of Mechanical & Aerospace Engineering, Nanyang Technological University, Singapore
[3] School of Aeronautics, Northwestern Polytechnical University, Xi'an
来源：
Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2020年 / 41卷 / 11期
关键词：
Aerodynamic derivative; Aerodynamic model; Coupled motion; Etkin model; Pitching; Plunging; Transonic; Unsteady aerodynamics;
D O I：
10.11990/jheu.201903018
中图分类号：
学科分类号：
摘要：
It is unsuitable to model unsteady aerodynamics for high-agility modern aircraft by the traditional first-order linear superposition theory. For this study, in order to investigate the applicability of a higher order aerodynamic model to the simulation of hysteresis effects, the unsteady time histories of aerodynamics for NACA0012 associated with single-freedom forced motions, plunging and pitching, and coupled plunging and pitching motion under transonic conditions were investigated computationally based on in-house codes. The effects of various aerodynamic derivatives on aerodynamic models are discussed based on the Etkin aerodynamic model. Final results indicated that unsteady lift and pitching moment in forced single or coupled motions could be accurately regenerated if the Etkin model is expanded to the second order derivative of the angle of attack with respect to time. Copyright ©2020 Journal of Harbin Engineering University.
引用
收藏
页码：1683 / 1688
页数：5
相关论文
共 16 条
  • [1] YANG Lei, YE Zhengyin, Unsteady aerodynamic force of tilt ducted fan during transition period, Journal of aerospace power, 30, 1, pp. 155-163, (2015)
  • [2] ZHANG Qing, YE Zhengyin, Longitudinal stability analysis for X-37B like trans-atmospheric orbital test vehicle based on aerodynamic derivatives, Journal of Beijing University of Aeronautics and Astronautics, 46, 1, pp. 77-85, (2020)
  • [3] ETKIN B., Dynamics of atmospheric flight, (2012)
  • [4] YUAN Xianxu, CHEN Qi, XIE Yufei, Et al., Problems in numerical prediction of dynamic stability derivatives, Acta aeronautica et astronautica sinica, 37, 8, pp. 2385-2394, (2016)
  • [5] HE Zhengchun, QIAN Weiqi, ZHU Guolin, Et al., Research on the modeling of pitching moment coefficient in transonic condition for flight vehicle, Acta aerodynamica sinica, 23, 4, pp. 470-475, (2005)
  • [6] GHOREYSHI M, CUMMINGS R M., Challenges in the aerodynamics modeling of an oscillating and translating airfoil at large incidence angles, Aerospace science and technology, 28, 1, pp. 176-190, (2013)
  • [7] NELSON R C, PELLETIER A., The unsteady aerodynamics of slender wings and aircraft undergoing large amplitude maneuvers, Progress in aerospace sciences, 39, 2, pp. 185-248, (2003)
  • [8] MARZOCCA P, LIBRESCU L, SILVA W A., Aeroelastic response of nonlinear wing sections using a functional series technique, AIAA journal, 40, 5, pp. 813-824, (2002)
  • [9] SILVA W A., Application of nonlinear systems theory to transonic unsteady aerodynamic responses, Journal of aircraft, 30, 5, pp. 660-668, (1993)
  • [10] SILVA W A., Simultaneous excitation of multiple-input/multiple-output CFD-based unsteady aerodynamic systems, Journal of aircraft, 45, 4, pp. 1267-1274, (2008)
12