Kalvin Marques Bueno Brandão, D. Carinhana, V. Leite, J. D. Guimarães, G. M. Batista
{"title":"Characterization of an Aerodynamic and Scramjet Propulsion Test Facility","authors":"Kalvin Marques Bueno Brandão, D. Carinhana, V. Leite, J. D. Guimarães, G. M. Batista","doi":"10.2514/6.2018-3734","DOIUrl":"https://doi.org/10.2514/6.2018-3734","url":null,"abstract":"","PeriodicalId":373890,"journal":{"name":"2018 Aerodynamic Measurement Technology and Ground Testing Conference","volume":"113 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":"131412164","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}
Jason Klepper, Robert D. Knapke, J. Sirbaugh, Stephen Guimond, Derick Daniel, J. Masters, K. Tatum
{"title":"Computational Modeling and Simulation Applications to Support Integrated Test and Evaluation (IT&E) at AEDC","authors":"Jason Klepper, Robert D. Knapke, J. Sirbaugh, Stephen Guimond, Derick Daniel, J. Masters, K. Tatum","doi":"10.2514/6.2018-3873","DOIUrl":"https://doi.org/10.2514/6.2018-3873","url":null,"abstract":"","PeriodicalId":373890,"journal":{"name":"2018 Aerodynamic Measurement Technology and Ground Testing Conference","volume":"130 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":"116205413","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":"Mistakes Made in Store Separation Wind Tunnel Testing During the Last 4 Decades","authors":"A. Cenko","doi":"10.2514/6.2018-4282","DOIUrl":"https://doi.org/10.2514/6.2018-4282","url":null,"abstract":"","PeriodicalId":373890,"journal":{"name":"2018 Aerodynamic Measurement Technology and Ground Testing Conference","volume":"408 24","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120886408","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":"Uncertainty Quantification in Steady State PSP Using Monte Carlo Simulations at AEDC","authors":"Michael Nelson","doi":"10.2514/6.2018-4050","DOIUrl":"https://doi.org/10.2514/6.2018-4050","url":null,"abstract":"","PeriodicalId":373890,"journal":{"name":"2018 Aerodynamic Measurement Technology and Ground Testing Conference","volume":"46 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":"123082910","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":"Statistical Characteristics of the Influence of an Electronically Scanned Pressure Transducer on Measurement Error and Uncertainty","authors":"F. Semmelmayer, M. Reeder, Richard S. Seymour","doi":"10.2514/6.2018-4111","DOIUrl":"https://doi.org/10.2514/6.2018-4111","url":null,"abstract":"","PeriodicalId":373890,"journal":{"name":"2018 Aerodynamic Measurement Technology and Ground Testing Conference","volume":"38 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":"133306136","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":"Extended Model for Dynamic Depletion and Test Section Conditions for a Blow-Down Hypersonic Wind Tunnel","authors":"Jesse R. Maxwell, Gabriel B. Goodwin","doi":"10.2514/6.2018-3564","DOIUrl":"https://doi.org/10.2514/6.2018-3564","url":null,"abstract":"","PeriodicalId":373890,"journal":{"name":"2018 Aerodynamic Measurement Technology and Ground Testing Conference","volume":"87 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":"124613765","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}
P. Agrawal, Peter Jenniskiens, E. Stern, J. Arnold, Yih-Kanq Chen
A test campaign was conducted placing meteorites in the 60 MW plasma Arcjet Interaction Heating Facility at NASA Ames Research Center, with the aim to achieve flight-relevant conditions for asteroid impacts in Earth's atmosphere and to provide insight into how meteoritic materials respond to extreme entry heating environments. The test conditions at heat flux of 4000 W/m 2 and 140 kPa stagnation pressure are comparable to those experienced by a 30-meter diameter asteroid moving at 20 km/s velocity at 65 km altitude in the Earth's atmosphere. Test objects were a stony type H5 ordinary chondrite (Tamdakht) and an iron type IAB-MG meteorite (Campo Del Cielo), and included the terrestrial analogs Dense Flood Basalt and Fused Silica. All samples were exposed for only a few seconds in the plasma stream. Significant melt flow and vaporization was observed for both the stony and iron meteorites during exposure. Mass loss from spallation of fragments was also observed. Vapor emitted atomic lines from alkali metals and iron, but did not emit the expected MgO molecular band emissions. The meteoritic melts flowed more rapidly, indicating lower viscosity, than those of Fused Silica. The surface recession was mapped. The effective heat of ablation derived from this showed that ablation under these conditions occurred in the melt-dominated regime. Ablation parameters have an effect on ground damage estimates. A bias in ablation parameters towards the melt-dominated regime would imply that impacting asteroids survive to lower altitude, and therefore could possibly have airbursts with a larger ground damage footprint. State-of-the-art meteoroid ablation observational data from experimental relevant
在NASA艾姆斯研究中心的60兆瓦等离子体电弧相互作用加热设备中进行了一项测试活动，目的是获得小行星在地球大气中撞击的飞行相关条件，并深入了解陨石材料如何应对极端的进入加热环境。热流密度为4000 W/m 2、滞止压力为140 kPa时的试验条件与一颗直径30米的小行星在地球大气层65公里高度以20公里/秒的速度运行时所经历的条件相当。测试对象是石质H5普通球粒陨石(Tamdakht)和铁型IAB-MG陨石(Campo Del Cielo)，包括地球上的类似物致密洪水玄武岩和熔融二氧化硅。所有样品在等离子体流中只暴露了几秒钟。在暴露过程中，石陨石和铁陨石都观察到明显的熔体流动和汽化。碎片碎裂造成的质量损失也被观察到。蒸汽发出碱金属和铁的原子谱线，但没有发出预期的MgO分子谱带。陨石熔体流动更快，表明粘度比熔融二氧化硅低。绘制了地表退行图。由此得出的有效烧蚀热表明，这些条件下的烧蚀发生在熔体为主的状态下。烧蚀参数对地面损伤估计有影响。如果烧蚀参数偏向融水为主的状态，则意味着撞击小行星能在较低的高度生存，因此可能会产生空中爆炸，对地面造成更大的破坏。最新的流星体消融观测数据来自相关实验
{"title":"Arcjet Ablation of Stony and Iron Meteorites","authors":"P. Agrawal, Peter Jenniskiens, E. Stern, J. Arnold, Yih-Kanq Chen","doi":"10.2514/6.2018-4284","DOIUrl":"https://doi.org/10.2514/6.2018-4284","url":null,"abstract":"A test campaign was conducted placing meteorites in the 60 MW plasma Arcjet Interaction Heating Facility at NASA Ames Research Center, with the aim to achieve flight-relevant conditions for asteroid impacts in Earth's atmosphere and to provide insight into how meteoritic materials respond to extreme entry heating environments. The test conditions at heat flux of 4000 W/m 2 and 140 kPa stagnation pressure are comparable to those experienced by a 30-meter diameter asteroid moving at 20 km/s velocity at 65 km altitude in the Earth's atmosphere. Test objects were a stony type H5 ordinary chondrite (Tamdakht) and an iron type IAB-MG meteorite (Campo Del Cielo), and included the terrestrial analogs Dense Flood Basalt and Fused Silica. All samples were exposed for only a few seconds in the plasma stream. Significant melt flow and vaporization was observed for both the stony and iron meteorites during exposure. Mass loss from spallation of fragments was also observed. Vapor emitted atomic lines from alkali metals and iron, but did not emit the expected MgO molecular band emissions. The meteoritic melts flowed more rapidly, indicating lower viscosity, than those of Fused Silica. The surface recession was mapped. The effective heat of ablation derived from this showed that ablation under these conditions occurred in the melt-dominated regime. Ablation parameters have an effect on ground damage estimates. A bias in ablation parameters towards the melt-dominated regime would imply that impacting asteroids survive to lower altitude, and therefore could possibly have airbursts with a larger ground damage footprint. State-of-the-art meteoroid ablation observational data from experimental relevant","PeriodicalId":373890,"journal":{"name":"2018 Aerodynamic Measurement Technology and Ground Testing Conference","volume":"135 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":"122037756","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":"Evolution of the hot channel and blast wave structure generated from femtosecond tagging in quiescent air","authors":"M. R. New-Tolley, M. Shneider, R. Miles","doi":"10.2514/6.2018-2990","DOIUrl":"https://doi.org/10.2514/6.2018-2990","url":null,"abstract":"","PeriodicalId":373890,"journal":{"name":"2018 Aerodynamic Measurement Technology and Ground Testing Conference","volume":"22 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":"131614278","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":"Method of Characteristics Design of High-Temperature Wind Tunnel Nozzles with Vibrational Relaxation","authors":"William C. Starshak, C. Butler, S. Laurence","doi":"10.2514/6.2018-3565","DOIUrl":"https://doi.org/10.2514/6.2018-3565","url":null,"abstract":"","PeriodicalId":373890,"journal":{"name":"2018 Aerodynamic Measurement Technology and Ground Testing Conference","volume":"25 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":"132063149","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":"Boundary Layer Transition- and Heat Transfer-Imaging of the AEDC Materials Wedge in the VKF Tunnel B Using Infrared Thermography","authors":"J. Wehrmeyer, A. Alexander, C. Hall, J. Hopf","doi":"10.2514/6.2018-4052","DOIUrl":"https://doi.org/10.2514/6.2018-4052","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":"130385813","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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