Volume 28 Issue 11
Nov.  2013
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YANG Mu-qing, MA Dong-li. Effect of asymmetric ground effect on stabilitiy of tailless aircraft[J]. Journal of Aerospace Power, 2013, 28(11): 2553-2560.
Citation: YANG Mu-qing, MA Dong-li. Effect of asymmetric ground effect on stabilitiy of tailless aircraft[J]. Journal of Aerospace Power, 2013, 28(11): 2553-2560.
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Effect of asymmetric ground effect on stabilitiy of tailless aircraft

  • School of Aeronautics Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 2013-03-27
  • Publish Date: 2013-11-28
    Abstract
  • The research focus was put on asymmetric ground effect, especially on the lateral and directional aerodynamic characteristics. Effects of height of wing chord plane to deck, Reynolds number and wind over deck (WOD) were studied. Computational fluid dynamics (CFD) method was used and validated by comparing with the experimental data presented in previous reports. Height of wing chord plane to deck is the most important factor that influences lift, rolling moment and yawing moment. Lateral and directional stabilities are weakened by reducing height of wing chord plane to deck. Lateral stability decreased 2.8% and 5.6% as the height of wing chord plane to deck was reduced from 1.5m to 1.2m and 1.0m, respectively. By increasin g Reynolds number, lift is increased significantly, while yawing moment is little influenced. Magnitudes of both lift and rolling moment are amplified slightly with the increase of WOD.When WOD varied from 0m/s to 15m/s, lift and rolling moment varied only within 1.1% and 3.4%, respectively. Thus the effect of WOD is found to be secondary.

     

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