Establishment and verification of longitudinal aerodynamic model of tandem wing aircraft

2019 International Conference on Advanced Electronic Materials, Computers and Materials Engineering

无线电电子学;计算机科学;材料科学

Wang, Ziyi^1 ; Xiong, Jing^1 ; Cheng, Xiaoxue^2 ; Li, Jie^1

School of Mechatronic Engineering, Beijing Institute of Technology, Beijing

100081, China^1

International Organization Department, China Center for International Science and Technology Exchange, Beijing

100081, China^2

关键词: Aerodynamic derivatives;    Aerodynamic modeling;    Aerodynamic shape;    Aerodynamic simulations;    Goodness of fit;    In-flight tests;    Short periods;    Verification method;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/563/3/032022/pdf
DOI  :  10.1088/1757-899X/563/3/032022

来源: IOP

【 摘 要 】

This paper clarified the contribution of front wing and rear wing to the longitudinal aerodynamic derivative by analyzing the characteristics of tandem wing aircraft. By combining the structure and aerodynamic simulation data of the aircraft, the aerodynamic derivative can be directly solved through simplification of force without introducing the tail capacity Vh, and the longitudinal short-period (control) transfer function of the tandem wing aircraft can be obtained by substituting the aerodynamic model which is composed by aerodynamic derivative into the short period motion equation. This transfer function can be used to build the control system in Simulink. When the input signal is the same, the short-period response of the system has high goodness of fit with the value measured in flight test. Therefore, the longitudinal aerodynamic model of the aircraft is well verified, and it can be used for the design of the aircraft controller and its aerodynamic shape. The modeling method and the verification method are applicable to fixed-wing aircraft including tandem wing aircraft.