Esser, B. and Gülhan, A. and Koch, U. (2001) Testing of Thermal Protection Systems in High-Enthalpy Hypersonic Facilities. Euro-Conference "Hypersonic and Aerothermic Flows and Shocks and Lasers", Meudon, 23.-27.4.2001.
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During the hot phase of atmospheric entry or reentry a space vehicle is exposed to a high-enthalpy hypersonic flow field including regions with chemical and thermal non-equilibrium. The heat loads are significantly influenced by the local gas composition and thermodynamic state, which makes ground testing of thermal protection systems, e.g. in arc heated facilities, an essential task during vehicle design. The flow field used for testing differs from free flight, since the facilities in general cannot generate near-equilibrium free stream conditions due to limitations of the pressure level. The gas-surface interaction, however, is mainly controlled by the local state near the vehicle's surface, which can be duplicated even inside a partially different global flow field. Based on the results of several tests, which were performed for several earth reentry projects, the most important parameters for aerothermal ground tests are identified. Additionally, first results from tests in a CO2 atmosphere in DLR's arc heated facility L2K will be presented.
|Document Type:||Conference or Workshop Item (Speech)|
|Title:||Testing of Thermal Protection Systems in High-Enthalpy Hypersonic Facilities|
|Event Title:||Euro-Conference "Hypersonic and Aerothermic Flows and Shocks and Lasers", Meudon, 23.-27.4.2001|
|Organizer:||Observatoire de Paris|
|HGF - Research field:||Aeronautics, Space and Transport (old)|
|HGF - Program:||Space (old)|
|HGF - Program Themes:||W RP - Raumtransport|
|DLR - Research area:||Space|
|DLR - Program:||W RP - Raumtransport|
|DLR - Research theme (Project):||UNSPECIFIED|
|Institutes and Institutions:||Institute of Aerodynamics and Flow Technology > Supersonic and Hypersonic Technology|
|Deposited By:||elib DLR-Beauftragter|
|Deposited On:||31 Jan 2006|
|Last Modified:||14 Jan 2010 21:04|
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