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Jing Fan, Jianzheng Jiang, Quanhua Sun, Zuowu Li, Chenxi Wu. Analysis of long-range ultra-low flight trajectory[J]. Chinese Journal of Theoretical and Applied Mechanics, 2009, 41(4): 449-454. DOI: 10.6052/0459-1879-2009-4-2009-154
Citation: Jing Fan, Jianzheng Jiang, Quanhua Sun, Zuowu Li, Chenxi Wu. Analysis of long-range ultra-low flight trajectory[J]. Chinese Journal of Theoretical and Applied Mechanics, 2009, 41(4): 449-454. DOI: 10.6052/0459-1879-2009-4-2009-154
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Analysis of long-range ultra-low flight trajectory

  • Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaKey Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaChina Aerodynamic Research and Development Center, National Laboratory of Computational Fluid Dynamics, Beijing 100083, ChinaKey Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China

  • Received Date: March 18, 2009
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  • An ultra-low, long-range flight trajectory with themaximum altitude of about 100km is investigated. Such an ultra-lowtrajectory employs the satellite mode against the gravitation by thecentrifugal force. Different from a running satellite, the rarefied gaseffects on the ultra-low trajectory are essentially important. It is shownthat under the same payload and range, the power requirements of theultra-low trajectory and classic minimum energy trajectory are almostthe same. For anaxial symmetric configuration with the nose radius of 5cm, its stagnationheat flux along an ultra-low trajectory arrives at a maximum value of50MW/m2 around altitude 25km, which is about half of the maximumstagnation heat flux along a minimum energy trajectory. The aerodynamicheating along an ultra-low trajectory can be solved using conventionalmature techniques such as ablation, because it does not require lift. Ingeneral, the power and aerodynamic requirements of ultra-low flighttrajectories can be satisfied based on existing technologies, and thereforeit is realistic to promote the anti-defense ability of long-range missilesby taking the ultra-low flight trajectory.
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