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

Measurement of Flow Properties and Thrust on Scramjet Nozzle Using Pressure-Sensitive Paint

Hirschen, Christian and Gülhan, Ali and Beck, Walter and Henne, Ulrich (2009) Measurement of Flow Properties and Thrust on Scramjet Nozzle Using Pressure-Sensitive Paint. Journal of Propulsion and Power, 25 (2), pp. 267-280. American Institute of Aeronautics and Astronautics (AIAA). DOI: 10.2514/1.37957 ISSN 0748-4658

Full text not available from this repository.

Official URL: http://www.aiaa.org/content.cfm?pageid=322&lupubid=24


An experimental study of flows over a single expansion ramp nozzle with flush-mounted side walls was carried out at the DLR, German Aerospace Center. The tests were performed at a freestream Mach number of 7 in the hypersonic wind tunnel H2K in Cologne. The Reynolds number and nozzle pressure ratios in the wind-tunnel flow were varied to study the performance of the scramjet nozzle at different flight altitudes and run conditions. The static pressure distribution on the single expansion ramp was measured by both the pressure-sensitive paint method and by using pressure transducer taps located at discrete points on the surface. These two methods showed that the nozzle pressure ratio and the freestream Reynolds number do not substantially influence the static pressure ratio on the expansion ramp. A pitot rake was also used to measure the pressure distribution in the nozzle wake. Using this technique the nozzle flow in the wake could be visualized and the strong influence of the nozzle pressure ratio on the interaction between nozzle and external flows was revealed. The data obtained by the different measurement techniques permitted a characterization of the nozzle flow and gave insight into the properties of single expansion ramp nozzle flows. The thrust generated by the nozzle, the thrust efficiency coefficient, and the thrust vector angle were calculated by using the pressure data obtained by both pressure measurement techniques and the results compared. It was shown that thrust values obtained from pressure tap measurements were overestimated. Criteria were developed to aid in the design and optimization of the thrust-related performance criteria for this single ramp nozzle.

Item URL in elib:https://elib.dlr.de/54587/
Document Type:Article
Title:Measurement of Flow Properties and Thrust on Scramjet Nozzle Using Pressure-Sensitive Paint
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Gülhan, AliAli.Guelhan (at) dlr.deUNSPECIFIED
Date:March 2009
Journal or Publication Title:Journal of Propulsion and Power
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.2514/1.37957
Page Range:pp. 267-280
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
Keywords:Scramjet, nozzle, thrust
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):W - Antriebsystemtechnik - Antriebskonzepte (old)
Location: Köln-Porz , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Experimental Methods
Institute of Aerodynamics and Flow Technology > Supersonic and Hypersonic Technology
Deposited On:05 Dec 2008
Last Modified:08 Mar 2018 18:44

Repository Staff Only: item control page

Help & Contact
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.