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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

Analysis of long-range ultra-low flight trajectory

doi: 10.6052/0459-1879-2009-4-2009-154
  • Received Date: 2009-03-19
  • Publish Date: 2009-07-18
  • 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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      沈阳化工大学材料科学与工程学院 沈阳 110142

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