Pub Date : 1993-09-20DOI: 10.1109/ICIASF.1993.687683
B. Walker, F.L. Heltsley
{"title":"Nonintrusive Diagnostics of Supersonic Missile Afterbody Flows","authors":"B. Walker, F.L. Heltsley","doi":"10.1109/ICIASF.1993.687683","DOIUrl":"https://doi.org/10.1109/ICIASF.1993.687683","url":null,"abstract":"","PeriodicalId":398832,"journal":{"name":"International Congress on Instrumentation in Aerospace Simulation Facilities,","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127410095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1993-09-20DOI: 10.1109/ICIASF.1993.687663
R. Gaillard, G. Losfeld, F. Micheli
{"title":"Description of the Measurement and Visualization Techniques used in the Onera S5Ch Wind Tunnel for Complex Flows Investigations","authors":"R. Gaillard, G. Losfeld, F. Micheli","doi":"10.1109/ICIASF.1993.687663","DOIUrl":"https://doi.org/10.1109/ICIASF.1993.687663","url":null,"abstract":"","PeriodicalId":398832,"journal":{"name":"International Congress on Instrumentation in Aerospace Simulation Facilities,","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128276414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1993-09-20DOI: 10.1109/ICIASF.1993.687668
T. Herpel, L. Fottner
Acceleipation of gas turbine engines pushes the compressor of the engine to the limits of stable operation and may lead to unstable engine conditions with an entire loss of thrust. Therefore, transient performance of turbofan engines has to be considered when designing the engine. A setup for the experimental irivestigation of transient performance and unsteady flow phenomena on a turbofan engine is presented. A procedure for measuring transient pressures with conventional pressure probes is established as well as a method for measuring unsteady temperatures with thermocouples. Ikliniature pressure transducers are incorporated in the: compressors of the engine in order to detect very fast pressure changes. A complex computer system for means of engine control, monitoring and high speed data acquisition was built up. The system was used to evaluate the transient performance characteristics of the two-spool turbofan engine Larzac 04.
{"title":"A System for Monitoring, Measurement and Analysis of Transient Performance and Stall Phenomena of Gas Turbine Engines","authors":"T. Herpel, L. Fottner","doi":"10.1109/ICIASF.1993.687668","DOIUrl":"https://doi.org/10.1109/ICIASF.1993.687668","url":null,"abstract":"Acceleipation of gas turbine engines pushes the compressor of the engine to the limits of stable operation and may lead to unstable engine conditions with an entire loss of thrust. Therefore, transient performance of turbofan engines has to be considered when designing the engine. A setup for the experimental irivestigation of transient performance and unsteady flow phenomena on a turbofan engine is presented. A procedure for measuring transient pressures with conventional pressure probes is established as well as a method for measuring unsteady temperatures with thermocouples. Ikliniature pressure transducers are incorporated in the: compressors of the engine in order to detect very fast pressure changes. A complex computer system for means of engine control, monitoring and high speed data acquisition was built up. The system was used to evaluate the transient performance characteristics of the two-spool turbofan engine Larzac 04.","PeriodicalId":398832,"journal":{"name":"International Congress on Instrumentation in Aerospace Simulation Facilities,","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129579711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1993-09-20DOI: 10.1109/ICIASF.1993.687670
R. Ainsworth, J. Batt
rcribes the application of surface mounted semiconductor pressure sensors to two and three dinmnsional fast response aerodynamic probe geometries. A detailed experimental programme or work is described in which large scale aerodynamic models of potential probe geometries have been tested at representative Reynolds numbers and a range of pitch and yaw configurations. The construction of small scale fast response aerdynamic probes is detailed , and calibration results obtained with these at a variety of Mach and Reynolds number conditions are given. INTRODUCTiON Pneumatic aerodynamic probes have been used for several decades in turbomachinery related research in order to determine fluid flow total and static pressures. Combination type probes have enabled flow Mach number and direction to bedetermined in two dimensions using mcasurements taken from three ports. Careful calibration of the probe, in terms of sensitivity to Mach and Reynolds number, is carried out in some form of aerodynamic calibration facility, where the effects of flow pitch and yaw on the measured acroydnamic coefficients aredctcrmincd. The probe is then introduced into the experiment where. measurements of llow quantities are required.
{"title":"The Development of a 3D Fast Response Aerodynamic Probe","authors":"R. Ainsworth, J. Batt","doi":"10.1109/ICIASF.1993.687670","DOIUrl":"https://doi.org/10.1109/ICIASF.1993.687670","url":null,"abstract":"rcribes the application of surface mounted semiconductor pressure sensors to two and three dinmnsional fast response aerodynamic probe geometries. A detailed experimental programme or work is described in which large scale aerodynamic models of potential probe geometries have been tested at representative Reynolds numbers and a range of pitch and yaw configurations. The construction of small scale fast response aerdynamic probes is detailed , and calibration results obtained with these at a variety of Mach and Reynolds number conditions are given. INTRODUCTiON Pneumatic aerodynamic probes have been used for several decades in turbomachinery related research in order to determine fluid flow total and static pressures. Combination type probes have enabled flow Mach number and direction to bedetermined in two dimensions using mcasurements taken from three ports. Careful calibration of the probe, in terms of sensitivity to Mach and Reynolds number, is carried out in some form of aerodynamic calibration facility, where the effects of flow pitch and yaw on the measured acroydnamic coefficients aredctcrmincd. The probe is then introduced into the experiment where. measurements of llow quantities are required.","PeriodicalId":398832,"journal":{"name":"International Congress on Instrumentation in Aerospace Simulation Facilities,","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124013668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1993-09-20DOI: 10.1109/ICIASF.1993.687689
J. Komnpenhans, M. Raffel, A. Vogt, M. Fischer
Particle Image Velocimetry (PIV) is increasingly used to investigate unsteady velocity fields instantencously. For the first time the PIV technique allows the recording of a complete velocity field in a plane of the flow within microseconds. This does not only give information about unsteady flow fields otherwise not obtainable but also helps to save operational time in the wind tunnel. At DLR a set up for PIV has been developed which can be operated under the rough environmental conditions (noise, vibrations) of a large wind tunnel. This system has been successfully applied to low speed as well as to high speed flows (U = 10. 500 m/s). The evaluation and post processing of the PIV recordings run fully automatical on a workstation.
{"title":"Aerodynamic Investigations in Low and High Speed Wind Tunnels by means of Particle Image Velocimetry","authors":"J. Komnpenhans, M. Raffel, A. Vogt, M. Fischer","doi":"10.1109/ICIASF.1993.687689","DOIUrl":"https://doi.org/10.1109/ICIASF.1993.687689","url":null,"abstract":"Particle Image Velocimetry (PIV) is increasingly used to investigate unsteady velocity fields instantencously. For the first time the PIV technique allows the recording of a complete velocity field in a plane of the flow within microseconds. This does not only give information about unsteady flow fields otherwise not obtainable but also helps to save operational time in the wind tunnel. At DLR a set up for PIV has been developed which can be operated under the rough environmental conditions (noise, vibrations) of a large wind tunnel. This system has been successfully applied to low speed as well as to high speed flows (U = 10. 500 m/s). The evaluation and post processing of the PIV recordings run fully automatical on a workstation.","PeriodicalId":398832,"journal":{"name":"International Congress on Instrumentation in Aerospace Simulation Facilities,","volume":"2011 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123821362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1993-09-20DOI: 10.1109/ICIASF.1993.687684
C. S. Moraitis, Systelligence Consultants, Skouh
We examine the feasibility of applying Particle Image Velocimetry (PIV) in hvpersonic flows, in connection wth the longhot facility of the von Karman Institute for Fluid Dynamics The minimum detectable particle size is determined through scattering calculations, in association with realistic laser power and film sensitivity figures Impedimenta pertinent to contamination of the flow are discussed and hints about technically tangible means of mitigating their consequences are presented
{"title":"Application of Particle image Velocimetry to Hypersonic Flows: Perspectives and Impedimenta","authors":"C. S. Moraitis, Systelligence Consultants, Skouh","doi":"10.1109/ICIASF.1993.687684","DOIUrl":"https://doi.org/10.1109/ICIASF.1993.687684","url":null,"abstract":"We examine the feasibility of applying Particle Image Velocimetry (PIV) in hvpersonic flows, in connection wth the longhot facility of the von Karman Institute for Fluid Dynamics The minimum detectable particle size is determined through scattering calculations, in association with realistic laser power and film sensitivity figures Impedimenta pertinent to contamination of the flow are discussed and hints about technically tangible means of mitigating their consequences are presented","PeriodicalId":398832,"journal":{"name":"International Congress on Instrumentation in Aerospace Simulation Facilities,","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121571219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1993-09-20DOI: 10.1109/ICIASF.1993.687658
A. Bertehud, S. Graves, J. Diamond, S. Stover
{"title":"Design Features of a System for Transition Characterization","authors":"A. Bertehud, S. Graves, J. Diamond, S. Stover","doi":"10.1109/ICIASF.1993.687658","DOIUrl":"https://doi.org/10.1109/ICIASF.1993.687658","url":null,"abstract":"","PeriodicalId":398832,"journal":{"name":"International Congress on Instrumentation in Aerospace Simulation Facilities,","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132544459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1993-09-20DOI: 10.1109/ICIASF.1993.687645
R. Scurlock, R. Webb
{"title":"Cryogenic Instrumentation Target of 0.01% Accuracy achieved","authors":"R. Scurlock, R. Webb","doi":"10.1109/ICIASF.1993.687645","DOIUrl":"https://doi.org/10.1109/ICIASF.1993.687645","url":null,"abstract":"","PeriodicalId":398832,"journal":{"name":"International Congress on Instrumentation in Aerospace Simulation Facilities,","volume":"10 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132871672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1993-09-20DOI: 10.1109/ICIASF.1993.687671
D. Coulton
{"title":"Multiport Pressure Measurements on Continuously Moving Wind Tunnel Models","authors":"D. Coulton","doi":"10.1109/ICIASF.1993.687671","DOIUrl":"https://doi.org/10.1109/ICIASF.1993.687671","url":null,"abstract":"","PeriodicalId":398832,"journal":{"name":"International Congress on Instrumentation in Aerospace Simulation Facilities,","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133511085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1993-09-20DOI: 10.1109/ICIASF.1993.687655
A. Dharamsi, A. Jackson, S. K. Chaturvedi
{"title":"Non-Intrusive Measurements of Gaseous Concentrations Temperatures","authors":"A. Dharamsi, A. Jackson, S. K. Chaturvedi","doi":"10.1109/ICIASF.1993.687655","DOIUrl":"https://doi.org/10.1109/ICIASF.1993.687655","url":null,"abstract":"","PeriodicalId":398832,"journal":{"name":"International Congress on Instrumentation in Aerospace Simulation Facilities,","volume":"09 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127200943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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