Method for rapidly predicting aerodynamic characteristics of low-orbit spacecraft having complex shape
A technology of aerodynamic characteristics and prediction methods, applied in instruments, special data processing applications, electrical digital data processing, etc.
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[0059] The specific solution examples for the prediction of aerodynamic characteristics of low-orbit spacecraft are as follows:
[0060] First consider the Gravity field and steady state Ocean Circulation Explorer (GOCE) of the European Space Agency (ESA), figure 2 A schematic diagram of its model. In order to maximize the sensitivity to the Earth's gravitational field, the satellite's flight altitude is as low as 250-300 km, Table 1 is the calculation conditions, and the gas molecule reflection model is diffuse reflection.
[0061] Table 1 Calculation conditions of GOCE satellite verification example
[0062]
[0063] image 3 The GOCE satellite drag coefficient vs. speed ratio (the ratio of the satellite flight speed to the most probable molecular thermal motion speed of the incoming flow) is given, and compared with the results published by the German HTG (Göttingen Hypersonic Institute), the solid line Represents program calculation results, and scatter points repre...
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