Title :
Aerodynamic Coefficients Models of Hypersonic Vehicle Based on Aero Database
Author :
Duan, Guangren ; Sun, Yong ; Zhang, Maorui ; Zhang, Ze ; Gao, Xiangyu
Author_Institution :
Center for Control Theor. & Guidance Technol., Harbin Inst. of Technol., Harbin, China
Abstract :
The aerodynamic Coefficients models play an essential part in the simulation and the analysis of the hypersonic vehicle, especially in the trajectory planning. This paper builds the aerodynamic coefficients models by the nonlinear least square method based on the CAV aero database. The lift and drag coefficients models can be expressed with the polynomial and the exponential function. The parameters of the model have been gotten and the mean of relative error is less than 5.10%. So the models fit the aero characteristic well and can be used in practical design and simulation as a reference.
Keywords :
aerodynamics; aircraft; drag; exponential distribution; flow simulation; hypersonic flow; least squares approximations; missiles; polynomial approximation; CAV aero database; aerodynamic coefficient model; common aero vehicle; drag coefficient model; exponential function; hypersonic vehicle; lift coefficient model; nonlinear least square method; polynomial function; relative error; trajectory planning; Aerodynamics; Analytical models; Computational modeling; Data models; Databases; Least squares methods; Vehicles; Aerodynamic Coefficients; CAV; Hypersonic Vehicle; Nonlinear Least Square;
Conference_Titel :
Pervasive Computing Signal Processing and Applications (PCSPA), 2010 First International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-8043-2
Electronic_ISBN :
978-0-7695-4180-8
DOI :
10.1109/PCSPA.2010.247
