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C*-Efficiency Evaluation of Transpiration Cooled Ceramic Combustion Chambers

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.

Full text not available from this repository.

Official URL: http://link.springer.com/article/10.1007/s12567-014-0062-0

Abstract

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.

Document Type:Article
Title:C*-Efficiency Evaluation of Transpiration Cooled Ceramic Combustion Chambers
Authors:
AuthorsInstitution or Email of Authors
Herbertz, ArminArmin.Herbertz@dlr.de
Ortelt, Markusmarkus.ortelt@dlr.de
Müller, Iljailja.mueller@dlr.de
Hald, Hermannhermann.hald@dlr.de
Date:June 2014
Journal or Publication Title:CEAS Space Journal
Refereed publication:Yes
In Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:6
DOI:10.1007/s12567-014-0062-0
Page Range:pp. 99-105
Publisher:Springer-Verlag
ISSN:1868-2502
Status:Published
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
Location: Stuttgart
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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