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Aerodynamic Coefficients of Free-Flying Cubes in Hypersonic Flowfield

Seltner, Patrick and Willems, Sebastian and Gülhan, Ali (2019) Aerodynamic Coefficients of Free-Flying Cubes in Hypersonic Flowfield. Journal of Spacecraft and Rockets, 56 (6), pp. 1725-1734. American Institute of Aeronautics and Astronautics (AIAA). doi: 10.2514/1.A34345. ISSN 0022-4650.

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Official URL: https://doi.org/10.2514/1.A34345

Abstract

Aerodynamic coefficients of a cube depending on a broad-range attitude change have been measured using the free-flight technique in a hypersonic flowfield. Experiments were performed therefore in the hypersonic wind tunnel H2K at the German Aerospace Center (DLR) in Cologne. The free-flight technique in H2K has allowed achieving a continuous rotation of the cube without any sting interferences in a broad angular range of 90°. This motion of the model during the free flight has been acquired using a nonintrusive high-speed stereo tracking system. A marker-based tracking algorithm has been applied to reconstruct the three-dimensional flight trajectories and attitudes to determine the resulting forces and moments. By using high-speed schlieren photography, the unsteady flow structures have been recorded. Pitch-angle-dependent aerodynamic coefficients of rotating cubes have been observed.

Item URL in elib:https://elib.dlr.de/129273/
Document Type:Article
Title:Aerodynamic Coefficients of Free-Flying Cubes in Hypersonic Flowfield
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Seltner, PatrickPatrick.Seltner (at) dlr.dehttps://orcid.org/0000-0002-7706-9220
Willems, SebastianSebastian.Willems (at) dlr.dehttps://orcid.org/0000-0002-5576-7829
Gülhan, AliAli.Guelhan (at) dlr.dehttps://orcid.org/0000-0003-4905-5881
Date:20 September 2019
Journal or Publication Title:Journal of Spacecraft and Rockets
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:56
DOI :10.2514/1.A34345
Page Range:pp. 1725-1734
Editors:
EditorsEmailEditor's ORCID iD
UNSPECIFIEDAIAAUNSPECIFIED
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
ISSN:0022-4650
Status:Published
Keywords:atmospheric re-entry, hypersonic wind tunnel, high-speed aerodynamics, free-flight technique
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transportation
DLR - Research area:Raumfahrt
DLR - Program:R RP - Space Transportation
DLR - Research theme (Project):R - Raumfahrzeugsysteme - Anlagen u. Messtechnik (old)
Location: Köln-Porz
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Supersonoc and Hypersonic Technology
Deposited By: Seltner, Herr Patrick
Deposited On:23 Oct 2019 12:50
Last Modified:05 Nov 2020 21:06

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