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Vol. 173, Issue 6, June 2014, pp. 28-33

 

Bullet

 

Improved Dutch Roll Approximation for Hypersonic Vehicle
 

1, * Liang-Liang Yin, 1 Yi-min Huang, 1 Chun-Zhen Sun, 2 Jie Jia, 3, * Yong Yang

1 College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
2 College of Information Engineering, Nanchang Hangkong University, Nanchang, 330069, China
3 School of Information Technology, Jiangxi University of Finance and Economics, Nanchang 330013, China

* E-mail: yinliangshmily@126.com

 

Received: 18 April 2014 /Accepted: 31 May 2014 /Published: 30 June 2014

Digital Sensors and Sensor Sysstems

 

Abstract: An improved dutch roll approximation for hypersonic vehicle is presented. From the new approximations, the dutch roll frequency is shown to be a function of the stability axis yaw stability and the dutch roll damping is mainly effected by the roll damping ratio. In additional, an important parameter called roll-to-yaw ratio is obtained to describe the dutch roll mode. Solution shows that large-roll-to-yaw ratio is the generate character of hypersonic vehicle, which results the large error for the practical approximation. Predictions from the literal approximations derived in this paper are compared with actual numerical values for s example hypersonic vehicle, results show the approximations work well and the error is below 10 %.

 

Keywords: Hypersonic vehicle, Dutch roll, Literal approximation, Roll-to-yaw ratio.

 

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