Pub Date : 1993-09-20DOI: 10.1109/ICIASF.1993.687686
D.B. Juanarena, T.K. Henrikeen, P.H. Fuykschot
In 1977 Pressure Systems, Inc (PSI) pioneered the field of pressure scanning by introducing the first commercially available Electronically Scanned Pressure (ESP) device. The electronic pressure scanner, contrary to the mechanical pressure scanner, utilizes one single crystal, piezoresistive, solid state pressure transducer per measurement port, In contrast to the also common discrete pressure transducers, the electronic pressure scanner houses all the channels, 8 through 64 transducers, walog multiplexers, and an instrument amplifier; all incorporated into a very compact unit called an ESP. See Fig 1 for an electrical block diagram of the ESP.
{"title":"Miniature High Performance Interface for in Model Electronic Pressure Scanning","authors":"D.B. Juanarena, T.K. Henrikeen, P.H. Fuykschot","doi":"10.1109/ICIASF.1993.687686","DOIUrl":"https://doi.org/10.1109/ICIASF.1993.687686","url":null,"abstract":"In 1977 Pressure Systems, Inc (PSI) pioneered the field of pressure scanning by introducing the first commercially available Electronically Scanned Pressure (ESP) device. The electronic pressure scanner, contrary to the mechanical pressure scanner, utilizes one single crystal, piezoresistive, solid state pressure transducer per measurement port, In contrast to the also common discrete pressure transducers, the electronic pressure scanner houses all the channels, 8 through 64 transducers, walog multiplexers, and an instrument amplifier; all incorporated into a very compact unit called an ESP. See Fig 1 for an electrical block diagram of the ESP.","PeriodicalId":398832,"journal":{"name":"International Congress on Instrumentation in Aerospace Simulation Facilities,","volume":"81 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":"115750692","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.1993.687656
R. Bazile, D. Stepowski
A linear measurement technique based on simultaneous planar imaging of laser induced dye fluorescence and Raman scattering in the liquid phase is reported. Calibrations in a stream of monosized droplets doped with weak concentrations of rhodamin show that the intensities on the droplet images are proportional to the actual droplet volume for Raman scattering and to the initial volume of the droplet for fluorescence, as the mass of dissolved dye does not vaporize. Thus, the mass fraction of liquid fuel that has vaporized before the probing event can be derived from these si mu I taneo us measu re men ts . Experiments are performed in the early development of a burning spray to derive cumulative information on the vaporization dynamics in terms of mass fraction or evaporation constant. Size distributions from conjoined phase-Doppler measurements are also used to derive the rate of droplet consumption along the axis of the burning spray. The present paper reports on development and application of a different diagnostic in which a laser technique based on Raman and fluorescence interactions provides the cumulative mass fraction of vaporized fuel over the liquid course up to the measurement point. The liquid fuel (methanol) is doped with a small amount of an organic dye (rhodamin 6 G ) which does not vaporize with the fuel molecules. A s ingle laser pulse induces simultaneously Raman scattering from methanol and fluorescence emission from the dye. The comparison between the two signals provides information about the vaporization dynamics in so far as the dye fluorescence signal is not reduced during the evaporation. The measurement is insensitive to the thermochemical environment (collisional quenching) as both the dye and the fuel liquid molecules are laser probed in the same condensed phase.
{"title":"Laser Measurements of Vaporization in a Burning Spray of Methanol","authors":"R. Bazile, D. Stepowski","doi":"10.1109/ICIASF.1993.687656","DOIUrl":"https://doi.org/10.1109/ICIASF.1993.687656","url":null,"abstract":"A linear measurement technique based on simultaneous planar imaging of laser induced dye fluorescence and Raman scattering in the liquid phase is reported. Calibrations in a stream of monosized droplets doped with weak concentrations of rhodamin show that the intensities on the droplet images are proportional to the actual droplet volume for Raman scattering and to the initial volume of the droplet for fluorescence, as the mass of dissolved dye does not vaporize. Thus, the mass fraction of liquid fuel that has vaporized before the probing event can be derived from these si mu I taneo us measu re men ts . Experiments are performed in the early development of a burning spray to derive cumulative information on the vaporization dynamics in terms of mass fraction or evaporation constant. Size distributions from conjoined phase-Doppler measurements are also used to derive the rate of droplet consumption along the axis of the burning spray. The present paper reports on development and application of a different diagnostic in which a laser technique based on Raman and fluorescence interactions provides the cumulative mass fraction of vaporized fuel over the liquid course up to the measurement point. The liquid fuel (methanol) is doped with a small amount of an organic dye (rhodamin 6 G ) which does not vaporize with the fuel molecules. A s ingle laser pulse induces simultaneously Raman scattering from methanol and fluorescence emission from the dye. The comparison between the two signals provides information about the vaporization dynamics in so far as the dye fluorescence signal is not reduced during the evaporation. The measurement is insensitive to the thermochemical environment (collisional quenching) as both the dye and the fuel liquid molecules are laser probed in the same condensed phase.","PeriodicalId":398832,"journal":{"name":"International Congress on Instrumentation in Aerospace Simulation Facilities,","volume":"11 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":"121410159","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.1993.687666
B. Timmerman
A dud-reference beam, plane-wave illumination holographic interferometry set-up has been developed which can operate in a rapid double-pu'ae mode. It is intended for the quantitative study of density clianges that take place in a flow in very short time intervals (1-8110 ps), by means of a fast electro-optical shutter to switch the two reference beams between subsequent exposures. Some preliminary results have been obtained using a turbulent supersoric jet (M M 1.8).
{"title":"Development of a high-speed digital holographic interferometry system for study of rapid density fluctuations in compressible flow","authors":"B. Timmerman","doi":"10.1109/ICIASF.1993.687666","DOIUrl":"https://doi.org/10.1109/ICIASF.1993.687666","url":null,"abstract":"A dud-reference beam, plane-wave illumination holographic interferometry set-up has been developed which can operate in a rapid double-pu'ae mode. It is intended for the quantitative study of density clianges that take place in a flow in very short time intervals (1-8110 ps), by means of a fast electro-optical shutter to switch the two reference beams between subsequent exposures. Some preliminary results have been obtained using a turbulent supersoric jet (M M 1.8).","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":"129532367","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.1993.687644
P. Fuykschot
{"title":"Instrumentation Highlights at Etw","authors":"P. Fuykschot","doi":"10.1109/ICIASF.1993.687644","DOIUrl":"https://doi.org/10.1109/ICIASF.1993.687644","url":null,"abstract":"","PeriodicalId":398832,"journal":{"name":"International Congress on Instrumentation in Aerospace Simulation Facilities,","volume":"6 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":"114867784","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.1993.687676
U. Seelhorst, K. Butefisch, K. Sauerland
Within the scope of a co-operative programme between DLR and US Air Force and the DLr programme co-rot a three component laser- Doppler-velocimeter together with a position monitoring system has to be developed in order to determine the unsteady flow field around a rotating helicopter rotor blade. Most of these measurements have to be performed in the DNW (Deutsch-Niederlaendischer Windkanal.The Netherlands), a large wind tunnel with an open test section of 6m-8m. Experiences from previous tests in the DNW on the same helicopter rotor blade with different LDV set-ups were gained and finally led to a 3 component LDV with a working distance of 5m and a 350 mmaperture receiving optics. By the new set-up it was possible to obtain high quality data although the total laser power does not exceed 3 Watts.
{"title":"Three Component Laser-Doppler-Velocimeter Development for Large Wind Tunnel","authors":"U. Seelhorst, K. Butefisch, K. Sauerland","doi":"10.1109/ICIASF.1993.687676","DOIUrl":"https://doi.org/10.1109/ICIASF.1993.687676","url":null,"abstract":"Within the scope of a co-operative programme between DLR and US Air Force and the DLr programme co-rot a three component laser- Doppler-velocimeter together with a position monitoring system has to be developed in order to determine the unsteady flow field around a rotating helicopter rotor blade. Most of these measurements have to be performed in the DNW (Deutsch-Niederlaendischer Windkanal.The Netherlands), a large wind tunnel with an open test section of 6m-8m. Experiences from previous tests in the DNW on the same helicopter rotor blade with different LDV set-ups were gained and finally led to a 3 component LDV with a working distance of 5m and a 350 mmaperture receiving optics. By the new set-up it was possible to obtain high quality data although the total laser power does not exceed 3 Watts.","PeriodicalId":398832,"journal":{"name":"International Congress on Instrumentation in Aerospace Simulation Facilities,","volume":"104 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":"115688710","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.1993.687657
B. Leo
Ahsfruct The experimental itivcstigatioii of' threedimensional gas flc.rws requircs ircrn-int rrisive ant1 qua si po i n t I i k e mea s 11 remen t s. The re a re s t i I I few techniques for quanti t a t ivc nieasiirenients. which iiieei these demands. One nf them i.c spniitaiienws Rainan scattering which allnws to nicasure tlie tleiisity in wincl tunnels. I n a mixing I'low the par t i a l clenrily is measured. Vil?rational frequencies of niolecrilcs arc stimulatecl by a laser beam. The vilmtional Raman frcqriericy shift depends on the molccular species. The light intensity scattered iii Stokes lines is pmlmrtinnal to the molecular concentratinn in llie probe voluiiie. 'I'he probe volume has a diameter hetween 0. I a n d 0.3 inn1 aiicl a length between 0.6 ant1 0.8 ni i i i . 'flic (lata ratc is 100 to 1000 inenwreinents per second. The spontaneous Ramnn ccattering is tisetl. at ISI,. to investigate an irnpiiiging supers(-rnic jet issuecl from R circular nutlet into a supcrsonic cross-stream. The Mach ni in iber of the main flow in tlie wind tunnel i y 2.06. The inipinging jet ir n incthane jet a t Mach 2. l 'he experimental investigatinn inclutlex iiicthane ancl a i r partial dcnsities ineawrcnients i n (lic iiiipinging jc t inclucetl f l h v field arid wall pressure incasiirenrc~its along the model. On classical f luid dynamics assumptions, clensit ies ineasurcmenta are converted i 11 to part i B I p ressii res. 011 these ass ii in pt io 11 c; . we o 11 t a i t i lhe wall pressure field. 'These rerult$ are in good agreement with wall presslire nieasrii~cnieiits. Tlic lift and nioineirt cnefficients intlucccl hy t l i e jct intcraction are estimated hy tlie integration rrf the v; iI l pressure f ie ld.
{"title":"Experimental investigation of a jet in a cross-flow by spontaneous Ratman scatter","authors":"B. Leo","doi":"10.1109/ICIASF.1993.687657","DOIUrl":"https://doi.org/10.1109/ICIASF.1993.687657","url":null,"abstract":"Ahsfruct The experimental itivcstigatioii of' threedimensional gas flc.rws requircs ircrn-int rrisive ant1 qua si po i n t I i k e mea s 11 remen t s. The re a re s t i I I few techniques for quanti t a t ivc nieasiirenients. which iiieei these demands. One nf them i.c spniitaiienws Rainan scattering which allnws to nicasure tlie tleiisity in wincl tunnels. I n a mixing I'low the par t i a l clenrily is measured. Vil?rational frequencies of niolecrilcs arc stimulatecl by a laser beam. The vilmtional Raman frcqriericy shift depends on the molccular species. The light intensity scattered iii Stokes lines is pmlmrtinnal to the molecular concentratinn in llie probe voluiiie. 'I'he probe volume has a diameter hetween 0. I a n d 0.3 inn1 aiicl a length between 0.6 ant1 0.8 ni i i i . 'flic (lata ratc is 100 to 1000 inenwreinents per second. The spontaneous Ramnn ccattering is tisetl. at ISI,. to investigate an irnpiiiging supers(-rnic jet issuecl from R circular nutlet into a supcrsonic cross-stream. The Mach ni in iber of the main flow in tlie wind tunnel i y 2.06. The inipinging jet ir n incthane jet a t Mach 2. l 'he experimental investigatinn inclutlex iiicthane ancl a i r partial dcnsities ineawrcnients i n (lic iiiipinging jc t inclucetl f l h v field arid wall pressure incasiirenrc~its along the model. On classical f luid dynamics assumptions, clensit ies ineasurcmenta are converted i 11 to part i B I p ressii res. 011 these ass ii in pt io 11 c; . we o 11 t a i t i lhe wall pressure field. 'These rerult$ are in good agreement with wall presslire nieasrii~cnieiits. Tlic lift and nioineirt cnefficients intlucccl hy t l i e jct intcraction are estimated hy tlie integration rrf the v; iI l pressure f ie ld.","PeriodicalId":398832,"journal":{"name":"International Congress on Instrumentation in Aerospace Simulation Facilities,","volume":"99 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":"123039600","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.1993.687692
N. Toy, E. Savory, Q. H. Hoang, L. Gaudet
{"title":"Calibration and Use of Shear Sensitive Liquid Crystals in Aerodynamic Testing","authors":"N. Toy, E. Savory, Q. H. Hoang, L. Gaudet","doi":"10.1109/ICIASF.1993.687692","DOIUrl":"https://doi.org/10.1109/ICIASF.1993.687692","url":null,"abstract":"","PeriodicalId":398832,"journal":{"name":"International Congress on Instrumentation in Aerospace Simulation Facilities,","volume":"12 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":"131786081","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.1993.687673
V. Simonov
In many cases in practice there is a necessity in vibration measurements of objects, which are hardly measurable by traditional means (both contact and contactless). In such cases a new method can be used, which requires primarily optical visibility of the object. In this paper method and optical-electronic vibration measurin sys,tem is described, principle of operation of which is % a A on measurements of specially formed optical image of either the object itself, or the contrast part or element on the object's surface. Given are the results of mathematical and computer simulation of the system's measurink sections. Described are results of investigation of hindrance influence upon the result of measurements, and resulting errors are estimated. Described are methods and devices, designed for compensation of errors. Prasnted are the main technical characteristics of constructed model and the results of testing of some objects.
{"title":"Optical Vibration Measuring System Which Uses the Image of the Object","authors":"V. Simonov","doi":"10.1109/ICIASF.1993.687673","DOIUrl":"https://doi.org/10.1109/ICIASF.1993.687673","url":null,"abstract":"In many cases in practice there is a necessity in vibration measurements of objects, which are hardly measurable by traditional means (both contact and contactless). In such cases a new method can be used, which requires primarily optical visibility of the object. In this paper method and optical-electronic vibration measurin sys,tem is described, principle of operation of which is % a A on measurements of specially formed optical image of either the object itself, or the contrast part or element on the object's surface. Given are the results of mathematical and computer simulation of the system's measurink sections. Described are results of investigation of hindrance influence upon the result of measurements, and resulting errors are estimated. Described are methods and devices, designed for compensation of errors. Prasnted are the main technical characteristics of constructed model and the results of testing of some objects.","PeriodicalId":398832,"journal":{"name":"International Congress on Instrumentation in Aerospace Simulation Facilities,","volume":"15 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":"126410289","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.1993.687672
V. Simonov, B.M. Losiev
{"title":"Investigation of Vibration of Aviation Turbine","authors":"V. Simonov, B.M. Losiev","doi":"10.1109/ICIASF.1993.687672","DOIUrl":"https://doi.org/10.1109/ICIASF.1993.687672","url":null,"abstract":"","PeriodicalId":398832,"journal":{"name":"International Congress on Instrumentation in Aerospace Simulation Facilities,","volume":"59 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":"127866949","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 : 1900-01-01DOI: 10.1109/ICIASF.1993.687669
J. Kooi, C.J.J. Joosen, J. Willemsen
{"title":"A monitor system for wind-tunnel aircraft model engine simulators","authors":"J. Kooi, C.J.J. Joosen, J. Willemsen","doi":"10.1109/ICIASF.1993.687669","DOIUrl":"https://doi.org/10.1109/ICIASF.1993.687669","url":null,"abstract":"","PeriodicalId":398832,"journal":{"name":"International Congress on Instrumentation in Aerospace Simulation Facilities,","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130069819","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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