In order to research the robustness of terminal area energy management(TAEM) trajectory for reusable launch vehicle(RLV), a method of trajectory robustness assessing based on nonlinear e- quations of motion was developed. A trajectory design method basing on the nonlinear equations of mo?tion was introduced. According to the principle of the method, the concept of TAEM trajectory ro-bustness was defined, and uncertainties of the influence on TAEM trajectory robustness were listed. The energy gradient was defined as the measure of the ability to increase and decrease energy to remove energy dispersions, and the primary factors affecting the energy gradient were listed. The method of trajectory robustness analysis for TAEM was developed. Taking a certain RLV demonstrator for ex?ample, the influences of the model uncertainties on the energy corridor and the nominal trajectory ro?bustness were analyzed.
Key words
control and navigation technology of aerocraft /
trajectory robustness /
terminal area energy management /
reusable launch vehicle
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References
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Footnotes
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