Volume 35 Issue 6
Jun.  2009
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Li Huifeng, Ling Yuan. Reentry trajectory design of low lift-to-drag ( L/D ) ratio spacecraft based on predictor-corrector method[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(6): 705-708. (in Chinese)
Citation: Li Huifeng, Ling Yuan. Reentry trajectory design of low lift-to-drag ( L/D ) ratio spacecraft based on predictor-corrector method[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(6): 705-708. (in Chinese)

Reentry trajectory design of low lift-to-drag ( L/D ) ratio spacecraft based on predictor-corrector method

  • Received Date: 12 May 2008
  • Publish Date: 30 Jun 2009
  • To solve trajectory designing problem of the low lift-to-drag ( L/D ) ratio spacecraft when reentering into atmosphere with high speed, a predict guidance method was proposed, based on numerical predictor-corrector (NPC). The independent variable was changed to time instead of energy in order to avoid singularity. The 3-degree of freedom motion equations were established and longitudinal motion equations were inferential deduced. The value and sign of the bank angle were computed by longitudinal and lateral guidance separately while the main task of the latter was designing a lateral drogue deployment box. The results of simulation show that this method could educe appropriate reentry trajectory and bank angle according to the reentry conditions, and the velocity head, the rate of heat flow and g -loads are all suitable for the reentry desire.

     

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