Periodic cruise has the potential to improve the fuel-saving efficiency of hypersonic cruise vehicle but is difficult to optimize. In this paper, a two-level optimization method for the trajectory of periodic cruise is proposed. Due to that the periodic cruise trajectory can be divided into an acceleration phase where engine works and a glide phase where engine is off, the two-level optimization method is proposed to optimize the trajectory in each phase by the corresponding level. In the first level, Downhill Simplex Method (DSM) is employed to find an optimal angle of attack in the acceleration phase. Subsequently, the optimal trajectory in glide phase is obtained by the Pseudo-Spectral Method (PSM) in the second optimization level. Numerical results demonstrate the effectiveness of the proposed method. Finally, through comparing with steady-state cruise, it is concluded that periodic cruise makes full use of the change of atmospheric density and lift-drag ratio; thus, fuel saving is achieved.


    Access

    Download


    Export, share and cite



    Title :

    A Two-Level Optimization Method for Hypersonic Periodic Cruise Trajectory


    Contributors:
    Hesong Li (author) / Yi Wang (author) / Yunfan Zhou (author) / Shangcheng Xu (author) / Dan Su (author)


    Publication date :

    2021




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown




    Trajectory Optimization of Hypersonic Periodic Cruise Using an Improved PSO Algorithm

    Hesong Li / Yi Wang / Shangcheng Xu et al. | DOAJ | 2021

    Free access

    Coupled Waverider/Trajectory Optimization for Hypersonic Cruise

    Starkey, R. P. / Rankins, F. / Pines, D. et al. | British Library Conference Proceedings | 2005


    Coupled Waverider/Trajectory Optimization for Hypersonic Cruise

    Starkey, Ryan / Rankins, Falcon / Pines, Darryll | AIAA | 2005


    Heat-augmented Trajectory Optimization of Hypersonic Cruise Vehicle

    Wenkai, Wang / Hou, Zhongxi / Liu, Duoneng et al. | AIAA | 2017


    Optimization and Implementation of Periodic Cruise for a Hypersonic Vehicle

    Robert Chen / Walton Williamson / Jason Speyer et al. | AIAA | 2006