Herbertz, Armin and Ortelt, Markus and Müller, Ilja and Hald, Hermann (2014) C*-Efficiency Evaluation of Transpiration Cooled Ceramic Combustion Chambers. CEAS Space Journal, 6 (2), pp. 99-105. Springer-Verlag. DOI: 10.1007/s12567-014-0062-0. ISSN 1868-2502.
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Achievable benefits of the transpiration cooled ceramic thrust chamber are the reduction of weight and manufacturing cost, as well as an increased reliability and higher lifetime due to thermal cycle stability. The transpiration cooling principle however reduces the engine performance. In order to evaluate the performance losses a c*-analysis is performed. Due to the transpiration cooling the characteristic velocity decreases with increasing coolant ratio. The goal of the chamber development is therefore to minimize the required coolant mass flow. The paper discusses the test specimen set up for the ceramic thrust chamber tests. Chamber operating parameters are listed. The paper discusses the impact of transpiration cooling on the calculated c*-efficiency. The evaluation is based on test results with the ceramic combustion chamber conducted in four separate test campaigns between 2008 and 2012.
|Title:||C*-Efficiency Evaluation of Transpiration Cooled Ceramic Combustion Chambers|
|Journal or Publication Title:||CEAS Space Journal|
|In Open Access:||No|
|In ISI Web of Science:||No|
|Page Range:||pp. 99-105|
|Keywords:||keramische Brennkammer, Transpirationskühlung, Effusionskühlung, Charakteristische Geschwindigkeit|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||Space Transport|
|DLR - Research area:||Raumfahrt|
|DLR - Program:||R RP - Raumtransport|
|DLR - Research theme (Project):||R - Proj. KERBEROS|
|Institutes and Institutions:||Institute of Structures and Design > Space System Integration|
|Deposited By:||Dr. Armin Herbertz|
|Deposited On:||20 Aug 2014 11:13|
|Last Modified:||20 Aug 2014 11:13|
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