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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2018, Vol. 39 ›› Issue (12): 222237-222237.doi: 10.7527/S1000-6893.2018.22237

• Solid Mechanics and Vehicle Conceptual Design • Previous Articles     Next Articles

Dynamic response analysis on carrier-based UAV considering catapult shuttle mass

FANG Xingbo1, NIE Hong1,2, ZHANG Zhao1, WEI Xiaohui1,2, ZHANG Ming1   

  1. 1. Key Laboratory of Fundamental Science for National Defense-Advanced Design Technology of Flight Vehicle, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
    2. State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
  • Received:2018-04-23 Revised:2018-07-09 Online:2018-12-15 Published:2018-10-10
  • Supported by:
    National Natural Science Foundation of China (11372129); The Research Fund of State Key Laboratory of Mechanics and Control of Mechanical Structures (Nanjing University of Aeronautics and Astronautics) (MCMS-0271G01); The Fundamental Research Funds for the Central Universities (NP2017401)

Abstract: Carrier-based UAV is a key asset in the future marine warfare, and its catapult dynamic performance plays an essential role in takeoff security. The catapult shuttle connects to the landing gear, forming a coupled dynamic system together during the catapult progress. At present, the research on such a coupled dynamic system is rare both at home and abroad. Taking a catapulting type of UAV as the research subject, a catapult dynamic system including shuttle mass has been constructed, and the dynamic response after sudden discharge of the holdback load has been analyzed. Results denote that inertia force of catapult shuttle is exerted on the nose landing gear along the catapult link. The nose landing gear load massively fluctuates during catapult dragging. Vertical load of nose landing gear strut, catapult link and nose wheel increase by 23.4%, 21.6%, and 14.0%, respectively. The range of the nose landing gear stroke increases by 30.4%. Moreover, the fluctuation frequency of the longitudinal and vertical loads of the nose landing gear decreases from 90.9 Hz and 5.2 Hz to 26.3 Hz and 4.4 Hz.

Key words: carrier-based UAV, tow catapulting, catapult shuttle, nose landing gear, dynamic response

CLC Number: