| Citation: | CHEN G，SUN X，LI G X，et al. Analysis and improvement of lateral instability of quasi-biconical lifting reentry spacecraft[J]. Journal of Beijing University of Aeronautics and Astronautics，2024，50（9）：2800-2809 （in Chinese） doi: 10.13700/j.bh.1001-5965.2022.0708
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The lateral stability of the quasi-biconical lifting reentry spacecraft is a strict constraint on the implementation of its ideal reentry strategy, which requires specialized analysis in the design stage. In this paper, for the nominal reentry process of the quasi-biconical lifting reentry spacecraft, the lateral stability of the spacecraft in the range of full speed and wide angle of attack was calculated by using the numerical simulation method. According to the flow field characteristics, the mutation regularity of the lateral stability in the sub-/trans-/supersonic domain was analyzed. Then, the effect of the eddy current generator, lateral stability enhancement surface, and center-of-gravity offset on the lateral stability was analyzed, as well as the corresponding mechanism. The results reveal that the combination of rudder deflection and center-of-gravity offset is the optimal solution to enhance lateral stability.
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