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Ground and Flight Experiments to Study Aerothermal Phenomena in Hypersonic Flight Regime

Gülhan, Ali (2023) Ground and Flight Experiments to Study Aerothermal Phenomena in Hypersonic Flight Regime. 3rd International Symposium on Hypersonics, 2023-08-10 - 2023-08-11, Seoul, Süd Korea.

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Abstract

Aerothermal heating and thermal protection of spacecraft are main challenges of hypersonic flights. Numerical simulation and design tools still have shortcomings in modelling aerothermodynamic phenomena and structure response at high temperatures. Therefore, reliable experimental data is essential for the design of hypersonic vehicles. Ground testing facilities cannot duplicate the flight environment along the complete flight trajectory, but allow qualification tests at selected conditions in a well characterized environment using advanced intrusive and non-intrusive measurement techniques. Since high enthalpy ground testing facilities are limited in test duration and Reynolds number duplication, low enthalpy wind tunnels are used for aerodynamic stability measurements. Another very important verification and qualification tool is the platform of sound rocket hypersonic flight experiments on scaled vehicles or components. Using multi-stage rocket configurations and flying suppressed trajectory are very promising approaches to gain valuable flight data at hypersonic flight conditions with high integral aerothermal loads leading credible structure temperatures. Extrapolation of results to full scale flight configurations can be done with validated numerical tools. Available data of full-scale interplanetary entry flights is an excellent opportunity to verify it. This lecture contains a dedicated discussion on these topics based on data of past experiments.

Item URL in elib:https://elib.dlr.de/200849/
Document Type:Conference or Workshop Item (Speech)
Title:Ground and Flight Experiments to Study Aerothermal Phenomena in Hypersonic Flight Regime
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Gülhan, AliUNSPECIFIEDhttps://orcid.org/0000-0003-4905-5881UNSPECIFIED
Date:2023
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Editors:
EditorsEmailEditor's ORCID iDORCID Put Code
Gülhan, AliUNSPECIFIEDhttps://orcid.org/0000-0003-4905-5881UNSPECIFIED
Status:Published
Keywords:Hypersonic Flight, Ground Testing, Flight Experiment, Instrumentation, Validation Data
Event Title:3rd International Symposium on Hypersonics
Event Location:Seoul, Süd Korea
Event Type:Workshop
Event Start Date:10 August 2023
Event End Date:11 August 2023
Organizer:Seoul National University
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 - Reusable Space Systems and Propulsion Technology
Location: Köln-Porz
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Supersonic and Hypersonic Technology
Deposited By: Gülhan, Dr.-Ing. Ali
Deposited On:14 Dec 2023 09:40
Last Modified:24 Apr 2024 21:01

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