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C*-Efficiency Evaluation of Transpiration Cooled Ceramic Combustion Chambers

Herbertz, Armin and Ortelt, Markus and Müller, Ilja and Hald, Hermann (2013) C*-Efficiency Evaluation of Transpiration Cooled Ceramic Combustion Chambers. 4th CEAS Air & Space Conference, 16. - 18. Sep. 2013, Linköping, Schweden.

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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.

Item URL in elib:https://elib.dlr.de/84422/
Document Type:Conference or Workshop Item (Speech)
Title:C*-Efficiency Evaluation of Transpiration Cooled Ceramic Combustion Chambers
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Herbertz, ArminArmin.Herbertz (at) dlr.deUNSPECIFIED
Ortelt, MarkusMarkus.Ortelt (at) dlr.deUNSPECIFIED
Müller, Iljailja.mueller (at) dlr.deUNSPECIFIED
Hald, HermannHermann.Hald (at) dlr.deUNSPECIFIED
Date:September 2013
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Ceramic Combustion Chamber, Transpiration Cooling, Characteristic Velocity
Event Title:4th CEAS Air & Space Conference
Event Location:Linköping, Schweden
Event Type:international Conference
Event Dates:16. - 18. Sep. 2013
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 - Proj. KERBEROS (old)
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Space Structural Components
Deposited By: Herbertz, Dr. Armin
Deposited On:22 Nov 2013 10:58
Last Modified:08 May 2014 23:18

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