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Axisymmetric SCRamjet Engine Design and Performance Analysis

Flock, Andreas K and Riehmer, Johannes C and Gülhan, Ali (2015) Axisymmetric SCRamjet Engine Design and Performance Analysis. 20th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, 06.-09. Jul. 2015, Glasgow, Schottland.

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Abstract

In the present work, we treat the SCRamjet engine as a system, by coupling different analytical design tools. For the intake portion a Busemann tool was used, the combustion chamber was modeled with a one dimensional reactor, and the nozzle was modeled with the method of characteristics. Performance parameter are discussed while we mainly focus on specific impulse. We used numerical simulations to validate the modeling of the combustion chamber and it turned out that after analytically forcing ignition, the numerical results matched the predictions best. Furthermore, we validated the analytical approach with numerical results and obtained good agreement. According to the analytical tool, for a constant intake pressure ratio of 80 the engine did not ignite at Mach numbers lower than 6 and the specific impulse dropped from 3500 s at Mach 6 to 1200 s and 500 s for Mach 8 and 10, respectively. Due to the small geometry and therefore high friction drag, specific impulse became negative at Mach 11.

Item URL in elib:https://elib.dlr.de/97945/
Document Type:Conference or Workshop Item (Speech)
Title:Axisymmetric SCRamjet Engine Design and Performance Analysis
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Flock, Andreas Kandreas.flock (at) dlr.deUNSPECIFIED
Riehmer, Johannes Cjohannes.riehmer (at) dlr.deUNSPECIFIED
Gülhan, AliAli.Guelhan (at) dlr.deUNSPECIFIED
Date:July 2015
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1-11
Status:Published
Keywords:SCRamjet, hypersonic airbreathing Propulsion
Event Title:20th AIAA International Space Planes and Hypersonic Systems and Technologies Conference
Event Location:Glasgow, Schottland
Event Type:international Conference
Event Dates:06.-09. Jul. 2015
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignment
DLR - Research theme (Project):R - no assignment
Location: Köln-Porz
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Über- und Hyperschalltechnologien
Deposited By: Flock, Andreas
Deposited On:31 Aug 2015 10:30
Last Modified:29 Mar 2017 11:26

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