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Investigation on Combined Control Surfaces for the Yaw Control of Low Aspect Ratio Flying Wing Configuration
Received date: 2012-11-21
Revised date: 2013-03-05
Online published: 2013-03-22
Supported by
National Level Project
Yaw control is one of the key issues in the design of a flying wing aircraft configuration. Based on numerical simulation, this paper studies the yaw control ability and coupling aerodynamic characteristics of spoiler-slot-deflector (SSD) used on a low aspect ratio flying wing configuration. To overcome the disadvantage of excessive coupling roll moment of the SSD, this paper proposes a yaw control surface by combining the SSD and elevon together. Then, it studies the rules of yaw control and the coupling characteristics of the combined control surface and reveals its physical mechanism. The research shows that the combined control surface has a strong ability for yaw control and decreases the coupling characteristics. By adjusting the deflection angles of the SSD and elevon, the coupling roll moment can be obviously decreased or eliminated, and the lift and the pitching moment can be recovered. The combined control surface can well solve the yaw control and coupling moment problems, and it has the advantage of fewer rudders concerned and high efficiency. Therefore, it is an efficient method for the yaw control of tailless aircraft with good prospect for application.
ZHANG Binqian , MA Yi , CHU Hubing , CHEN Zhenli , CHEN Yingchun . Investigation on Combined Control Surfaces for the Yaw Control of Low Aspect Ratio Flying Wing Configuration[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2013 , 34(11) : 2435 -2442 . DOI: 10.7527/S1000-6893.2013.0161
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