Flight at Supersonic and Hypersonic Velocities: Aerodynamics, Flow Control, Propulsion

A special issue of Aerospace (ISSN 2226-4310). This special issue belongs to the section "Aeronautics".

Deadline for manuscript submissions: 31 August 2024 | Viewed by 509

Special Issue Editor


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Guest Editor
Department of Mechanical Engineering, Kingston University, London KT1 2EE, UK
Interests: supersonic flows; hypersonic flows; aerodynamics; rarefied gas; computational fluid dynamics; propulsion; mathematical modelling
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Special Issue Information

Dear Colleagues,

The complexity of various technical problems associated with the design and development of supersonic and hypersonic vehicles and related systems leads to the need for research in the field of aerodynamics, flow control, and propulsion using mathematical modelling and experimental tools.

Supersonic and hypersonic vehicles could enable a range of future aviation and space missions. However, the extreme environmental conditions associated with high-Mach-number flight and temperatures pose a major challenge for supersonic and hypersonic vehicle aerodynamics, flight control, and propulsion systems. Structural components are at risk of damage under such critical flow conditions, since they can resonate and endure vibrational fatigue. In the supersonic and hypersonic regime, thermal loads become an additional concern due to the extreme aerodynamic heating, thereby posing stringent requirements on the material selection and thermal protection system.

The complexity of high-Mach-number vehicles, however, requires the closer coupling of aerodynamics and design principles with the development of new flight control and propulsion systems to achieve expanded levels of performance and structural durability. This Special Issue focuses on the synthesis of fundamental disciplines and practical applications involved in the investigation, description, and analysis of supersonic and hypersonic aircraft flight, including applied aerodynamics, aircraft propulsion, flight control, and related topics.

A particular focus of this Special Issue is the development of theoretical, computational, and experimental methods in supersonic and hypersonic aerodynamics and hybrid ramjet/scramjet propulsion systems. Computational methods are widely used by the practicing aerodynamicist, and this Special Issue covers techniques used to improve understanding of the physical models that underlie computational methods.

Dr. Konstantin Volkov
Guest Editor

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Keywords

  • supersonic flow
  • hypersonic flow
  • aerodynamics
  • flow control
  • propulsion
  • shock wave
  • heat transfer
  • shape optimisation
  • thermal protection
  • scramjet
  • ramjet

Published Papers (1 paper)

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Research

32 pages, 31602 KiB  
Article
The Impact of Upstream Static Deformation on Flow Past a Cylinder/Flare
by Aaron Becks, Tyler Korenyi-Both, Jack J. McNamara and Datta V. Gaitonde
Aerospace 2024, 11(5), 412; https://doi.org/10.3390/aerospace11050412 - 20 May 2024
Viewed by 371
Abstract
Reynolds-averaged Navier–Stokes simulations are performed for supersonic turbulent flow over a cylinder/flare with upstream surface distortion representative of structural deformation induced via fluid–structural and fluid–thermal–structural behavior. Broad parametric analysis is carried out through the generation of Kriging-response surfaces from a database of general [...] Read more.
Reynolds-averaged Navier–Stokes simulations are performed for supersonic turbulent flow over a cylinder/flare with upstream surface distortion representative of structural deformation induced via fluid–structural and fluid–thermal–structural behavior. Broad parametric analysis is carried out through the generation of Kriging-response surfaces from a database of general simulations. A posteriori simulations are then carried out at parametric combinations that correspond to extrema in the Kriging response surfaces to gain deeper insights into the interaction between the surface distortion and flow responses. Upstream distortions tend to decrease, rather than increase, the peak pressure and heat flux loads on the flare compared to an undeformed cylinder. Furthermore, decreases in these quantities reach up to O(10%) compared to up to O(1%) for increases. Integrated quantities over the flare are relatively insensitive to upstream distortion. The corner separation length is the most sensitive quantity to upstream distortion, with protrusions tending to increase the separation length and recessions reducing the separation length. Modifications in the separation length of up to 40% are observed. Reductions in peak loads tend to correspond to increases in the corner separation length. The movement of the surface distortion relative to the corner indicates a negligible impact beyond 1.5 distortion lengths from the corner, and the largest impact on the corner separation length occurs when distortion is directly adjacent. These results are an important step toward understanding and quantifying the impact of surface deformations on downstream components. Full article
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