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Experimental Study of SHEFEX II Hypersonic Aerodynamics and Canard Efficiency in H2K

Neeb, Dominik and Gülhan, Ali (2011) Experimental Study of SHEFEX II Hypersonic Aerodynamics and Canard Efficiency in H2K. In: Proceedings of the 7th European Symposium on Aerothermodynamics, 692. ESA Communications, ESTEC, Noordwijk, The Netherlands. 7th European Symposium on Aerothermodynamics, 9-12 May 2011, Brugge, Belgium. ISBN 978-92-9092-256-8. ISSN 1609-042X

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Abstract

One main objective of the DLR SHEFEX programme is to prove that sharp edged vehicles are capable of performing a re-entry into earth atmosphere by using a simple thermal protection system consisting of flat ceramic tiles. In comparison to blunt nose configurations like the Space shuttle, which are normally used for re-entry configurations, the SHEFEX TPS design is able to significantly reduce the costs and complexity of TPS structures and simultaneously increase the aerodynamic performance of the flight vehicle [1], [2]. To study its characteristics and perform several defined in-flight experiments during re-entry, the vehicle’s attitude will be controlled actively by canards [3]. In the framework of the SHEFEX II project an experimental investigation has been conducted in the hypersonic wind tunnel H2K to characterize the aerodynamic performance of the vehicle in hypersonic flow regime. The model has a modular design to enable the study of a variety of different influencing parameters. Its 4 circumferential canards have been made independently adjustable to account for the simulation of different manoeuvre conditions. To study the control behaviour of the vehicle and validate CFD data, a variation of canard deflections, angle of attack and angle of sideslip have been applied. Tests have been carried out at Mach 7 and 8.7 with a Reynolds number sensitivity study at the lower Mach number. The model was equipped with a six component internal balance to realize accurate coefficient measurements. The flow topology has been analyzed using Schlieren images. Beside general aerodynamic performance and canard efficiencies, flow phenomena like shock impingement on the canards could be determined by Schlieren images as well as by the derived coefficients.

Document Type:Conference or Workshop Item (Paper)
Title:Experimental Study of SHEFEX II Hypersonic Aerodynamics and Canard Efficiency in H2K
Authors:
AuthorsInstitution or Email of Authors
Neeb, DominikDLR
Gülhan, AliDLR
Date:2011
Journal or Publication Title:Proceedings of the 7th European Symposium on Aerothermodynamics
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Volume:692
Publisher:ESA Communications, ESTEC, Noordwijk, The Netherlands
Series Name:ESA Special Publication
ISSN:1609-042X
ISBN:978-92-9092-256-8
Status:Published
Keywords:Hypersonic, Aerodynamics, SHEFEX, Static stability, H2K
Event Title:7th European Symposium on Aerothermodynamics
Event Location:Brugge, Belgium
Event Type:international Conference
Event Dates:9-12 May 2011
Organizer:European Space Agency
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L - no assignement
DLR - Research theme (Project):L -- no assignement
Location: Köln-Porz
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Supersonic and Hypersonic Technology
Deposited By: Dominik Neeb
Deposited On:13 Jan 2012 08:29
Last Modified:13 Jan 2012 08:29

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