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Leaping flight is a typical flight mode of high speed flight vehicle, which can significantly increase the range. By comparing leaping flight and balanced flight trajectory, it is concluded that leaping flight can lead to higher peak value and fluctuation range of overload, dynamic pressure and outer wall temperature, but will also reduce speed loss, shorten flight time and lower inner wall temperature. On this basis, the adaptive Radau pseudo-spectrum method is used to obtain trajectory optimization result aiming at reducing the inner wall temperature of the thermal protection system. It is concluded that a higher leaping height is more beneficial to reducing the inner wall temperature under the premise of meeting various process constraints.

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Characteristic Analysis and Optimization of Leaping Flight Trajectory of High Speed Flight Vehicle

  • 会议论文

  • 发表日期：

    2026年

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  • Yu Xu,
  • Xuan Chen,
  • Yilei Ma,
  • Shichao Tian,
  • Yuqi Zhao,
  • Feng Chen,
  • Zhengguang He

摘要

Leaping flight is a typical flight mode of high speed flight vehicle, which can significantly increase the range. By comparing leaping flight and balanced flight trajectory, it is concluded that leaping flight can lead to higher peak value and fluctuation range of overload, dynamic pressure and outer wall temperature, but will also reduce speed loss, shorten flight time and lower inner wall temperature. On this basis, the adaptive Radau pseudo-spectrum method is used to obtain trajectory optimization result aiming at reducing the inner wall temperature of the thermal protection system. It is concluded that a higher leaping height is more beneficial to reducing the inner wall temperature under the premise of meeting various process constraints.