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Acta Armamentarii ›› 2014, Vol. 35 ›› Issue (1): 102-107.doi: 10.3969/j.issn.1000-1093.2014.01.015

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Dynamic Modeling and Response of a Morphing UAV with Variable Sweep and Variable Span

YANG Guan-tong, TANG Sheng-jing, ZHAO Lin-dong, GUO Jie   

  1. (Key Laboratory of Dynamic and Control of Flight Vehicle, Ministry of Education, Beijing
  • Received:2013-04-22 Revised:2013-04-22 Online:2014-03-18
  • Contact: YANG Guan-tong E-mail:ygt@bit.edu.cn

Abstract: For morphing flight vehicles, the changes of sweep angle and span have great influence on key parameters such as aerodynamic forces, inertial moments, pressure center and gravity center. A dynamic model of morphing vehicle with variable sweep and span is established based on Newton-Euler method. The additional force and moment generalized by morphing are deduced. The dynamic response aroused by morphing is studied using decoupled longitudinal equations and quasi-steady aerodynamic model. The results indicate that the changes of sweep and span influence the dynamic characteristics severely; however, the effect of different morphing speed is not remarkable. Appropriate strategy of morphing could weaken the fluctuation of dynamic parameters and relieve the burden of control system.

Key words: applied mechanics, UAV, variable sweep and variable span, dynamic modeling, dynamic response

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