elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Contact | Deutsch
Fontsize: [-] Text [+]

Transpiration Cooling Applied to C/C Liners of Cryogenic Liquid Rocket Engines

Greuel, D. and Herbertz, A. and Haidn, O. and Ortelt, M. and Hald, H. (2004) Transpiration Cooling Applied to C/C Liners of Cryogenic Liquid Rocket Engines. 40th AIAA/ASME/SAE/ASEE/ JPC Conference and Exhibition, Fort Lauderdale, Florida, USA, 11.-14.07.2004.

Full text not available from this repository.

Abstract

The state–of–the–art of ceramic matrix composites (CMC) utilization in liquid rocket engines is briefly reviewed. System analysis studies into the performance of transpiration cooled thrust chamber liners reveal coolant mass flow rates to be feasible only if they do not exceed 0.7% of the engine mass flow rate. Experimental studies clearly show that common models for heat transfer descriptions of blowing boundary layers are not able to predict precisely enough the cooling efficiency along a transpiration cooled liner. Instead a mixed approach, partly experimental and partly numerical, has been employed. A 2–D CFD tool based on the commercial ANSYS program has been adapted to model the compressible flow through the porous structure in order to predict the coolant mass flow distribution along a C/C liner and has been verified with experimental studies. To ensure the thermal protection of the C/C liner a minimum necessary coolant demand of around 0.45% of the total chamber mass flow rate has been calculated with TDK. A mathematical optimisation procedure is presented which should predict the necessary material properties to optimise the design of the liner’s micro–structure for the specific transpiration cooling requirements.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2005,
Title:Transpiration Cooling Applied to C/C Liners of Cryogenic Liquid Rocket Engines
Authors:
AuthorsInstitution or Email of Authors
Greuel, D.RA
Herbertz, A.RA
Haidn, O.RA
Ortelt, M.BK
Hald, H.BK
Date:2004
Status:Published
Keywords:ceramic matrix composites, CMC, rocket engine, crygenic, transpiration,
Event Title:40th AIAA/ASME/SAE/ASEE/ JPC Conference and Exhibition, Fort Lauderdale, Florida, USA, 11.-14.07.2004
Organizer:AIAA/ASME/SAE/ASEE/ JPC
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):E -- no assignement
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion
Institute of Structures and Design
Deposited By: elib DLR-Beauftragter
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 13:27

Repository Staff Only: item control page

Browse
Search
Help & Contact
Informationen
electronic library is running on EPrints 3.3.12
Copyright © 2008-2012 German Aerospace Center (DLR). All rights reserved.