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Volume 42 Issue 6
Jun.  2016
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Journal of Beijing University of Aeronautics and Astronautics  > 2016  >  42(6): 1303-1310.
YOU Yingjie, MI Panpan, LYU Mingyun, et al. Airship's longitudinal motion impact analysis based on coupling ballonet[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(6): 1303-1310. doi: 10.13700/j.bh.1001-5965.2015.0427(in Chinese)
Citation: YOU Yingjie, MI Panpan, LYU Mingyun, et al. Airship's longitudinal motion impact analysis based on coupling ballonet[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(6): 1303-1310. doi: 10.13700/j.bh.1001-5965.2015.0427(in Chinese)
shu

Airship's longitudinal motion impact analysis based on coupling ballonet

doi: 10.13700/j.bh.1001-5965.2015.0427
  • 1.

    School of Engineering, Beijing Forestry University, Beijing 100083, China

  • 2. School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

  • Received Date: 25 Jun 2015
  • Publish Date: 20 Jun 2016
    Abstract
  • Large high-altitude airship has a high volume ratio which even exceeds 90%, so it will induce significant impact on airship's motion because of the ballonets dynamics. Considering one large-scale airship whose cruise altitude is 6 000 m, ballonets dynamics based on the cylindrical container was established and airship longitudinal motion equations containing ballonets were further formulated. Finally, numerical simulation of airship longitudinal motion was performed and results were compared with that of airship model without ballonet dynamics. Results indicate that ballonets dynamics will make a difference to airship's pitch motion, easily inducing motion divergence and ballonets' coupling impacts reduce when the airship rises. In the meantime, the smaller the diameter of ballonets is, the smaller the dynamic coupling effect is when ballonets' volume is unchanged. In addition, the controllability of airship will be weakened because of ballonets, which should be taken into account during airship design.

     

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