Abstract: Reusable Launch Vehicle (RLV) represent an inevitable trend to achieve fast, reliable and cheap access to space in the future, and also a research hotspot in the field of aerospace. The reentry trajectory optimization, guidance and control methods of RLVs are reviewed in this paper. The trajectory optimization methods are reviewed from the aspects of the indirect method, the direct method and the pseudospectral method. The future development trend of each method is prospected based on the depth analysis of their characteristics. The reentry guidance of RLVs is reviewed from the aspects of offline nominal trajectory guidance, online trajectory reconstruction guidance, and predictor-corrector guidance. The advantages and disadvantages of each type of reentry guidance method are analyzed, and their future development direction summarized. In terms of control methods, the reentry attitude control problems of RLVs are reviewed from the linear control methods, non-linear control methods, and intelligent control methods. Moreover, the research hotspots of future control methods are discussed. Finally, the RLV reentry integrated guidance and control method is reviewed, and the key issues that need to be resolved in the future research of integrated guidance and control are pointed out.

Key words: reusable launch vehicles, reentry trajectory optimization, reentry guidance, reentry attitude control, integrated guidance and control