A new apparatus and method for determining trajectories for hypersonic glide vehicles significantly reduces integrated, or total, heat load, with little reduction in time to distance and maximum range. The new approach identifies a trajectory having large phugoid oscillations and plotting a glide trajectory along the peaks of the phugoid oscillations. The glide trajectory is determined by calculating a first altitude that results in a maximum lift to drag ratio trajectory having damped or small phugoid oscillations, then calculating a different altitude that results in larger phugoid oscillations, and higher phugoid peaks, and finally plotting a trajectory from the first altitude that follows the peaks of the higher phugoid oscillation trajectory. The thus calculated trajectory can be input into a glide vehicle guidance system for controlling the trajectory of the glide vehicle from a point where it reaches the first altitude.


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    Titel :

    Phugoid peaks trajectory for hypersonic glide vehicles


    Beteiligte:

    Erscheinungsdatum :

    02.05.2017


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES , Systeme zum Steuern oder Regeln nichtelektrischer veränderlicher Größen / B64C AEROPLANES , Flugzeuge / B64G Raumfahrt , COSMONAUTICS / G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS




    Phugoid oscillations at hypersonic speeds

    CHOU, Y. S. / LAITONE, E. V. | AIAA | 1965


    Phugoid oscillations at hypersonic speeds

    Laitone, E.V. / Chou, Y.S. | Engineering Index Backfile | 1965



    Rapid Trajectory Planning Considering Uncertainties for Hypersonic Glide Vehicles

    Xie, Yu / Zhang, Yuanlong / Zhu, Jianwen | Springer Verlag | 2025