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Physics of Fluids
Article . 2025 . Peer-reviewed
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Drag reduction and lift enhancement mechanism induced by a novel combinational spike and high-pressure capturing wing concept in hypersonic flows

Authors: Jian Guo; Juanmian Lei; Lingyun Zhang; Guoyou Sun; Boqian Zhang; Shuaibing Ding;

Drag reduction and lift enhancement mechanism induced by a novel combinational spike and high-pressure capturing wing concept in hypersonic flows

Abstract

The blunt cone vehicle experiences significant shockwave-induced drag during hypersonic flight, compromising its aerodynamic performance. To enhance the lift-to-drag ratio of hypersonic blunt cone vehicles, this study proposes an innovative combinational spike and high-pressure capture wing (S-HCW) configuration. The drag reduction and lift enhancement mechanism of the S-HCW configuration was analyzed. The spike significantly reduces drag by pushing the bow shock away from the cone's leading edge. The high-pressure capture wing (HCW) captures high-pressure regions behind both the bow shock and reattachment shock, greatly enhancing the lift. To achieve increased lift, the HCW must capture as much of the high-pressure region following the reattachment shock as possible. Additionally, the effects of the spike length and aerodisk diameter on the flow field and aerodynamic characteristics of the on-design S-HCW configuration were discussed. The lift-to-drag ratio first rises and then falls as the spike length increases, while it steadily declines with a larger aerodisk diameter. At a 0° angle of attack, compared to the blunt cone configuration, the optimal S-HCW reduces drag by approximately 53%, while the lift coefficient and lift-to-drag ratio increase significantly. Furthermore, the aerodynamic characteristics of the three-dimensional S-HCW configuration were also examined. Although its lift-to-drag ratio is slightly lower than that of the two-dimensional configuration, it remains relatively high, further validating the configuration's feasibility. The proposed S-HCW configuration enhances the lift-to-drag ratio of hypersonic blunt cone vehicles, demonstrating significant application potential in the aerodynamic design of hypersonic vehicles.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
2
Top 10%
Average
Average
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