Journal of South China University of Technology (Natural Science Edition) ›› 2015, Vol. 43 ›› Issue (6): 110-115.doi: 10.3969/j.issn.1000-565X.2015.06.017

• Mechanics • Previous Articles     Next Articles

CEL Algorithm-Based Analysis of Dynamic Characteristics of Amphibious Aircraft Landing on Water

Yao Xiao-hu1 Huang Yu-tai1 Ou Zhi-cheng1 Liu Xiao-ming2 Hu Bo-ren2   

  1. 1． School of Civil Engineering and Transportation，South China University of Technology，Guangzhou 510640,Guangdong，China; 2． Technology Center，Chengdu Aircraft Industrial (Group) Co． ，Ltd． ，Chengdu 610092，Sichuan，China
  • Received:2014-05-30 Revised:2015-01-14 Online:2015-06-25 Published:2015-05-04
  • Contact: 姚小虎(1974-)，男，教授，博士生导师，主要从事冲击动力学研究． E-mail:yaoxh@scut.edu.cn
  • About author:姚小虎(1974-)，男，教授，博士生导师，主要从事冲击动力学研究．
  • Supported by:
    Supported by the National Natural Science Foundation of China(11372113) and the Program for New Century Excellent Talents in University of Ministry of Education of China(NCET-13-0218)

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Abstract: Aiming at the water landing of amphibious aircrafts，this paper presents a fluid-structure interaction (FSI) model of a certain amphibious aircraft head and analyzes the transient structural dynamic response of the head ditching by using the coupled Eulerian-Lagrange (CEL) method． Moreover，the stress，impact force and mass center velocity of the head at different ditching angles and vertical speeds are discussed． The results show that (1) the bottom pressure peak appears in the initial ditching stage and appears again with the heading up of the air-craft head; (2) during the ditching，the pressure of the head skeleton changes significantly; (3) with the de-crease of the hitting angle，the stress of the head reduces; and (4) both the head stress and the bottom impact force reduce with the decrease of ditching speed．

Key words: amphibious aircraft, water landing, fluid-structure interaction, dynamic characteristic