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Numerical study of the yaw control of flapless aircraft

Ling-Xiao Li (National Key Laboratory of Science and Technology on Aerodynamic Design and Research, Northwestern Polytechnical University, Xi’an, China)
He-Yong Xu (National Key Laboratory of Science and Technology on Aerodynamic Design and Research, Northwestern Polytechnical University, Xi’an, China)
Zhi-Jie Fu (National Key Laboratory of Science and Technology on Aerodynamic Design and Research, Northwestern Polytechnical University, Xi’an, China)
Zeng-Chun Huang (National Key Laboratory of Science and Technology on Aerodynamic Design and Research, Northwestern Polytechnical University, Xi’an, China)

Aircraft Engineering and Aerospace Technology

ISSN: 0002-2667

Article publication date: 12 April 2022

Issue publication date: 5 December 2022

111

Abstract

Purpose

The purpose of this paper is to study the yaw control of the flapless aircraft and investigate the equivalent control effect (ECE) and the power consumption of the pneumatic control.

Design/methodology/approach

The control effects of the mechanical control and the pneumatic control are calculated and the ECE curves are obtained. The power consumption of the pneumatic control is analyzed. A new pneumatic drag-type yaw control method is proposed. The mechanisms of the drag-type yaw control and the conventional thrust-type yaw control are explored. The drag-type yaw control is divided into two combined blowing forms: inner-top outer-bottom blowing and inner-bottom outer-top blowing. The differences between two kinds of the drag-type yaw control at a small angle of attack and a large angle of attack are explored.

Findings

The ECE curves of the pneumatic control are obtained. The power consumption of the drag-type yaw control is much lower than that of the thrust type. The lift coefficient of the inner-top outer-bottom blowing is higher than that of the inner-bottom outer-top blowing, but the inner-bottom outer-top blowing has higher efficiency of the yaw control at a large angle of attack.

Practical implications

This paper contributes to the research of the flapless aircraft.

Originality/value

A new pneumatic drag-type yaw control method of the flapless aircraft is proposed.

Keywords

Acknowledgements

This work was partially supported by the National Natural Science Foundation of China (Grant Number 11972306), National Innovation Training program for college students (Grant Number 202110699262), the Foundation of National Key Laboratory and the 111 Project of China (B17037). The authors would also like to acknowledge the computing services from the High Performance Computing Center of Northwestern Polytechnical University.

Citation

Li, L.-X., Xu, H.-Y., Fu, Z.-J. and Huang, Z.-C. (2022), "Numerical study of the yaw control of flapless aircraft", Aircraft Engineering and Aerospace Technology, Vol. 94 No. 10, pp. 1593-1604. https://doi.org/10.1108/AEAT-11-2021-0351

Publisher

:

Emerald Publishing Limited

Copyright © 2020, Emerald Publishing Limited

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