C. Broughton, A. Benmeddour, Y. Mébarki, Melissa Rivers
{"title":"Experimental Investigations of the NASA Common Research Semi-Span Model in the NRC 5-ft Trisonic Wind Tunnel","authors":"C. Broughton, A. Benmeddour, Y. Mébarki, Melissa Rivers","doi":"10.2514/6.2018-4285","DOIUrl":"https://doi.org/10.2514/6.2018-4285","url":null,"abstract":"","PeriodicalId":373890,"journal":{"name":"2018 Aerodynamic Measurement Technology and Ground Testing Conference","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125526055","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}
{"title":"Free-Flight Testing of Hypersonic Edney Shock Interactions","authors":"T. Fisher, M. K. Quinn, K. Smith","doi":"10.2514/6.2018-4283","DOIUrl":"https://doi.org/10.2514/6.2018-4283","url":null,"abstract":"","PeriodicalId":373890,"journal":{"name":"2018 Aerodynamic Measurement Technology and Ground Testing Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121104948","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}
Daniel T. Reese, P. Danehy, N. Jiang, J. Felver, Daniel R. Richardson, J. Gord
Selective two-photon absorptive resonance femtosecond laser electronic excitation tagging (STARFLEET) velocimetry is demonstrated for the first time in a NASA Langley wind tunnel with high repetition-rate and single-shot imaging. Experiments performed in the 0.3-meter Transonic Cryogenic Tunnel (TCT) allowed for testing at 300 K over a range of pressures (124 to 517 kPa) and Mach numbers (0.2-0.8) for freestream conditions and flow behind a cylindrical model. Measurement precision and accuracy are determined for the current set of experiments, as are signal intensity and lifetime. Precisions of 3-5 m/s (based on one standard deviation) were typical in the experiment; precisions better than 2% of the mean velocity were obtained for some of the highest velocity conditions. Agreement within a mean error of 3 m/s between STARFLEET freestream velocity measurements and facility DAS readings is demonstrated. STARFLEET is also shown to return spatially-resolved velocity profiles, though some binning of the signal is required
{"title":"Application of STARFLEET Velocimetry in the NASA Langley 0.3-meter Transonic Cryogenic Tunnel","authors":"Daniel T. Reese, P. Danehy, N. Jiang, J. Felver, Daniel R. Richardson, J. Gord","doi":"10.2514/6.2018-2989","DOIUrl":"https://doi.org/10.2514/6.2018-2989","url":null,"abstract":"Selective two-photon absorptive resonance femtosecond laser electronic excitation tagging (STARFLEET) velocimetry is demonstrated for the first time in a NASA Langley wind tunnel with high repetition-rate and single-shot imaging. Experiments performed in the 0.3-meter Transonic Cryogenic Tunnel (TCT) allowed for testing at 300 K over a range of pressures (124 to 517 kPa) and Mach numbers (0.2-0.8) for freestream conditions and flow behind a cylindrical model. Measurement precision and accuracy are determined for the current set of experiments, as are signal intensity and lifetime. Precisions of 3-5 m/s (based on one standard deviation) were typical in the experiment; precisions better than 2% of the mean velocity were obtained for some of the highest velocity conditions. Agreement within a mean error of 3 m/s between STARFLEET freestream velocity measurements and facility DAS readings is demonstrated. STARFLEET is also shown to return spatially-resolved velocity profiles, though some binning of the signal is required","PeriodicalId":373890,"journal":{"name":"2018 Aerodynamic Measurement Technology and Ground Testing Conference","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130631528","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}
{"title":"Temperature Profiling of the Atmosphere by Filtered Rayleigh Scattering","authors":"Anuj Rekhy, M. Shneider, R. Miles","doi":"10.2514/6.2018-3630","DOIUrl":"https://doi.org/10.2514/6.2018-3630","url":null,"abstract":"","PeriodicalId":373890,"journal":{"name":"2018 Aerodynamic Measurement Technology and Ground Testing Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114237074","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}
{"title":"Shadow UAV Wind Tunnel Testing using a Design of Experiments Approach","authors":"Melissa A. McDaniel, Zachary M. Hall","doi":"10.2514/6.2018-4195","DOIUrl":"https://doi.org/10.2514/6.2018-4195","url":null,"abstract":"","PeriodicalId":373890,"journal":{"name":"2018 Aerodynamic Measurement Technology and Ground Testing Conference","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121686407","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}
Yongzeng Li, D. Peng, Wenwu Zhou, Wei-zhe Wang, Yingzheng Liu, Satoshi Oouchida, T. Kawakubo, Akimitsu Yakushiji
{"title":"Comparison of PSP and TSP Measurement Techniques for Fast Rotating Blades","authors":"Yongzeng Li, D. Peng, Wenwu Zhou, Wei-zhe Wang, Yingzheng Liu, Satoshi Oouchida, T. Kawakubo, Akimitsu Yakushiji","doi":"10.2514/6.2018-3317","DOIUrl":"https://doi.org/10.2514/6.2018-3317","url":null,"abstract":"","PeriodicalId":373890,"journal":{"name":"2018 Aerodynamic Measurement Technology and Ground Testing Conference","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122580285","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}
The design of a custom camera lens including: a two-lens optical system, filter array, and iris has been developed enabling a greyscale plenoptic camera to acquire full field-of-view, 2D, instantaneous hyperspectral measurements. This work focuses on the use of 7 discrete color filters and their effect on the image quality. It was determined that the placement of the filters inside the aperture plane of the camera was paramount to mitigating image artifacts. In addition, design rules were developed such that the optimal optical parameters (image distance, working distance, and focal length) can be easily determined from a few charts.
{"title":"Design of a Multi-Color Plenoptic Camera for Snapshot Hyperspectral Imaging","authors":"T. Fahringer, P. Danehy, W. D. Hutchins","doi":"10.2514/6.2018-3627","DOIUrl":"https://doi.org/10.2514/6.2018-3627","url":null,"abstract":"The design of a custom camera lens including: a two-lens optical system, filter array, and iris has been developed enabling a greyscale plenoptic camera to acquire full field-of-view, 2D, instantaneous hyperspectral measurements. This work focuses on the use of 7 discrete color filters and their effect on the image quality. It was determined that the placement of the filters inside the aperture plane of the camera was paramount to mitigating image artifacts. In addition, design rules were developed such that the optimal optical parameters (image distance, working distance, and focal length) can be easily determined from a few charts.","PeriodicalId":373890,"journal":{"name":"2018 Aerodynamic Measurement Technology and Ground Testing Conference","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117047238","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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