Aerodynamic characteristics of a wrap-around fin rocket

Zhang, Guo Qing, Yu, S. C. M. and Schluter, Jorg 2016, Aerodynamic characteristics of a wrap-around fin rocket, Aircraft engineering and aerospace technology, vol. 88, no. 1, pp. 82-96, doi: 10.1108/AEAT-03-2014-0030.

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Title Aerodynamic characteristics of a wrap-around fin rocket
Author(s) Zhang, Guo Qing
Yu, S. C. M.
Schluter, Jorg
Journal name Aircraft engineering and aerospace technology
Volume number 88
Issue number 1
Start page 82
End page 96
Total pages 15
Publisher Emerald Group Publishing
Place of publication Bingley, Eng.
Publication date 2016
ISSN 0002-2667
Keyword(s) Stability
Wrap-around fin
Summary Purpose – The purpose of this paper is to investigate the aerodynamics characteristics (especially the side force/moment and rolling characteristics), to analyze the impacts generated by different parameters of wrap-around fins (WAFs) and to find the corresponding mechanism.Design/methodology/approach – The paper has adopted three different types of WAFs for the rocket configurations and the sub-regions dividedtechnology to investigate the lateral and rolling characteristics of WAFs, including the fins with variations in span to chord ratio, thickness,leading-edge sweep, curvature radius, fin numbers, setting angles and rotated angles. Simulations have been performed at Mach numbers from 3 to 4 through an angle-of-attack range of about 0° to 10° and at model rolling angles of 45° to 90°.Findings – The paper shows that the WAF configurations can greatly improve the longitudinal stability and enhance the longitudinal aerodynamic characteristics for the whole rocket. The total drag of the whole rocket is mainly stemmed from the body, while the drag generated by the WAF account for only about 7.42 per cent. The extra side forces and rolling moments are due largely to the unequal pressure distributions on both sides of the fin (windward or leeward). Maintaining a certain negative setting angle (d) can effectively avoid the coning movement and improve the flight stability at high angles of attack. The size of the span and chord are two main factors in controlling the longitudinal characteristics. For the side force/moment and rolling characteristics, different geometric parameters of the WAFs have played different roles.Originality/value – The paper provides the qualitative and quantitative analysis for different WAFs configurations by investigating the curves ofdifferent parameters and contouring of static pressure distributions. Findings can provide some suggestions for the designers for avoiding some significant dynamic problems, such as Magnus instability and roll rate variations during flight.
Language eng
DOI 10.1108/AEAT-03-2014-0030
Field of Research 091304 Dynamics, Vibration and Vibration Control
090199 Aerospace Engineering not elsewhere classified
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, Emerald Group Publishing
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