Open AccessStudy on the Transverse Elastic Vibration Equation and the Generalized Aerodynamic Force of Space Vehicle
Author(s) -
Pei Guo,
Zhengxue Li,
Jinhui Wu,
Wei Dong,
Wanghua Fei
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/887/1/012002
Subject(s) - spacecraft , space vehicle , aerodynamic force , vibration , aerodynamics , modal , transverse plane , natural frequency , control theory (sociology) , physics , structural engineering , engineering , aerospace engineering , mechanics , computer science , acoustics , control (management) , materials science , artificial intelligence , polymer chemistry
In order to avoid divergence of space vehicle attitude, structural elastic movements should be taken into consideration in the control system design. Space vehicle structure generally has a large length-diameter ratio, the corresponding rolling and longitudinal modal with higher natural frequency has a slight impact on the design of the control system, while the transverse elastic modal with lower natural frequency including pitching and yawing should be paid more attention in the design of space vehicle control system. In this paper, the influence of elastic vibration on the design of attitude control system of space vehicle is analyzed firstly. Then the transverse elastic vibration equation of spacecraft and the calculation method of generalized aerodynamic force are studied. Furthermore, the equation of elastic vibration considering the coupling effect of aerodynamic force between pitching and yawing control channels is proposed and the engineering calculation method of generalized aerodynamic force for typical stations in spacecraft is improved. The research results can provide significant reference for the design of the new generation of spacecraft control system.