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Parametric geometry models for hypersonic aircraft components: blunt leading edges

Parametric geometry models for hypersonic aircraft components: blunt leading edges
Parametric geometry models for hypersonic aircraft components: blunt leading edges
In this paper we report the results of investigations into the efficient parameterization of blunt leading edge shapes for hypersonic aircraft geometries. The investigations mostly revolve around waverider geometries generated with inverse design techniques, such as the osculating cones waverider forebody design method. The shapes presented however, can be utilized to introduce bluntness to any wedge-like geometry with sharp leading edges. Initially, we present detailed descriptions of three different variations of the rational Bézier curve based parameterization that was developed, and the variety of shapes that can be obtained is demonstrated. Afterwards their performance is evaluated utilizing 2D CFD analysis. In our simulations, the rational Bézier curve leading edges outperform circular ones when it comes to minimizing both drag and peak heating rates or peak temperatures. Additionally, with higher order rational Bézier leading edge shapes, higher levels of geometric continuity can be achieved at the interface between the blunt part and the original wedge-like geometry, resulting in a smoother transition. Preliminary results indicate that this can potentially affect the receptivity and hence transition mechanisms. Finally, the 2D geometry formulations are extended to full 3D waverider forebody geometries.
Kontogiannis, Konstantinos
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Cerminara, Adriano
2fe270e5-b2a1-48fc-ab8f-8b4e9325d493
Taylor, Nigel
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Sobester, Andras
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Sandham, Neil
0024d8cd-c788-4811-a470-57934fbdcf97
Kontogiannis, Konstantinos
95b0ed77-5f7c-4c69-a76f-3437031606ed
Cerminara, Adriano
2fe270e5-b2a1-48fc-ab8f-8b4e9325d493
Taylor, Nigel
83a1254c-9d22-4ef6-be3d-cf8c4a0a89ab
Sobester, Andras
096857b0-cad6-45ae-9ae6-e66b8cc5d81b
Sandham, Neil
0024d8cd-c788-4811-a470-57934fbdcf97

Kontogiannis, Konstantinos, Cerminara, Adriano, Taylor, Nigel, Sobester, Andras and Sandham, Neil (2015) Parametric geometry models for hypersonic aircraft components: blunt leading edges. 20th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, Glasgow, United Kingdom. 06 - 09 Jul 2015. (doi:10.2514/6.2015-3580).

Record type: Conference or Workshop Item (Paper)

Abstract

In this paper we report the results of investigations into the efficient parameterization of blunt leading edge shapes for hypersonic aircraft geometries. The investigations mostly revolve around waverider geometries generated with inverse design techniques, such as the osculating cones waverider forebody design method. The shapes presented however, can be utilized to introduce bluntness to any wedge-like geometry with sharp leading edges. Initially, we present detailed descriptions of three different variations of the rational Bézier curve based parameterization that was developed, and the variety of shapes that can be obtained is demonstrated. Afterwards their performance is evaluated utilizing 2D CFD analysis. In our simulations, the rational Bézier curve leading edges outperform circular ones when it comes to minimizing both drag and peak heating rates or peak temperatures. Additionally, with higher order rational Bézier leading edge shapes, higher levels of geometric continuity can be achieved at the interface between the blunt part and the original wedge-like geometry, resulting in a smoother transition. Preliminary results indicate that this can potentially affect the receptivity and hence transition mechanisms. Finally, the 2D geometry formulations are extended to full 3D waverider forebody geometries.

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More information

e-pub ahead of print date: 6 July 2015
Venue - Dates: 20th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, Glasgow, United Kingdom, 2015-07-06 - 2015-07-09
Organisations: Computational Engineering & Design Group

Identifiers

Local EPrints ID: 394884
URI: http://eprints.soton.ac.uk/id/eprint/394884
PURE UUID: 103af185-8624-433c-ae55-f22a4cac0289
ORCID for Andras Sobester: ORCID iD orcid.org/0000-0002-8997-4375
ORCID for Neil Sandham: ORCID iD orcid.org/0000-0002-5107-0944

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Date deposited: 31 May 2016 13:16
Last modified: 15 Mar 2024 03:13

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Contributors

Author: Konstantinos Kontogiannis
Author: Adriano Cerminara
Author: Nigel Taylor
Author: Andras Sobester ORCID iD
Author: Neil Sandham ORCID iD

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