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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2016, Vol. 37 ›› Issue (12): 3698-3705.doi: 10.7527/S1000-6893.2016.0245

• Fluid Mechanics and Flight Mechanics • Previous Articles     Next Articles

Theoretical calculation and experiment on impact loads of landing of wing-in-ground aircraft on water surface

CHU Lintang1,2, WU Bin2,3, WANG Mingzhen2,3, SUN Feng2,3   

  1. 1. China Aviation Industry General Aircraft Co., Ltd, Zhuhai 519030, China;
    2. Key Laboratory of High-speed Hydrodynamic Aviation Science and Technology, Jingmen 448035, China;
    3. AVIC Special Vehicle Research Institute, Jingmen 448035, China
  • Received:2016-01-11 Revised:2016-08-29 Online:2016-12-15 Published:2016-09-06
  • Supported by:

    Civil Aircraft Special Research Program (MJ-2015-F-028)

Abstract:

The symmetric step of hull landing of the wing-in-ground (WIG) aircraft on water surface, which is the most serious situation, is considered. All the factors influencing the impact are analyzed. A theoretic calculation method is proposed based on the assumption of strip theory of ship motion combining with Von Karman's momentum equation for hydrodynamics and Wagner's formula for calculation of added mass. Experimental results of the impacting loads are compared with those of theoretical calculation. It is shown that the experiment results are in good agreement with the calculation results, indicating that the theoretical evaluation can provide to a great extent useful information for the design of the WIG aircraft.

Key words: wing-in-ground (WIG) aircraft, hydrodynamic impact load, symmetric step, strip theory, added water mass

CLC Number: