{"title":"Predicting Collisions between Aircraft through Spatiotemporal Data-Driven Simulation of Airport Ground Operations","authors":"Yanyu Wang, Sun Zhe, Yongming Liu, P. Tang","doi":"10.2514/6.2019-3414","DOIUrl":"https://doi.org/10.2514/6.2019-3414","url":null,"abstract":"","PeriodicalId":384114,"journal":{"name":"AIAA Aviation 2019 Forum","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121500202","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}
This paper presents an experimental and numerical study of the aerodynamic interaction between horizontal tail-mounted propellers and the airframe. A representative aircraft model was installed in a low-speed wind-tunnel and measurements were taken with an external balance to determine the e_ect of propeller installation on integral forces and moments. Total pressure measurements were performed downstream of the model for qualitative analysis of the propeller–airframe interaction. The experimental data were complemented by full blade CFD analyses, which correlate excellently to the experimental data. Balance measurements indicate that the propeller installation results in an o_set and a change in the slope of the pitching moment curve over the complete range of angles of attack. The extent to which the propellers contribute to the longitudinal control and stability was shown to be dependent on the angle of attack of the aircraft and the rotation direction of the propellers. The flowfield and computed propeller loads show that an inboard-up rotating propeller results in a neutral contribution to longitudinal stability towards higher angles of attack, while an outboard-up rotation enhances the stability for all positive angles of attack. The non-uniform inflow to the propeller induced by the airframe leads to a lateral shift of the thrust which influences the trim condition.
{"title":"Aerodynamic Performance of an Aircraft Equipped with Horizontal Tail Mounted Propellers","authors":"N. V. Arnhem, R. D. Vries, R. Vos, L. Veldhuis","doi":"10.2514/6.2019-3036","DOIUrl":"https://doi.org/10.2514/6.2019-3036","url":null,"abstract":"This paper presents an experimental and numerical study of the aerodynamic interaction between horizontal tail-mounted propellers and the airframe. A representative aircraft model was installed in a low-speed wind-tunnel and measurements were taken with an external balance to determine the e_ect of propeller installation on integral forces and moments. Total pressure measurements were performed downstream of the model for qualitative analysis of the propeller–airframe interaction. The experimental data were complemented by full blade CFD analyses, which correlate excellently to the experimental data. Balance measurements indicate that the propeller installation results in an o_set and a change in the slope of the pitching moment curve over the complete range of angles of attack. The extent to which the propellers contribute to the longitudinal control and stability was shown to be dependent on the angle of attack of the aircraft and the rotation direction of the propellers. The flowfield and computed propeller loads show that an inboard-up rotating propeller results in a neutral contribution to longitudinal stability towards higher angles of attack, while an outboard-up rotation enhances the stability for all positive angles of attack. The non-uniform inflow to the propeller induced by the airframe leads to a lateral shift of the thrust which influences the trim condition.","PeriodicalId":384114,"journal":{"name":"AIAA Aviation 2019 Forum","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121668930","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":"On the Three-Dimensional Separation in Shock/Boundary-Layer Interactions at Swept Corners","authors":"R. R. Pulimidi, F. Lu","doi":"10.2514/6.2019-3648","DOIUrl":"https://doi.org/10.2514/6.2019-3648","url":null,"abstract":"","PeriodicalId":384114,"journal":{"name":"AIAA Aviation 2019 Forum","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114796488","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":"Concept of a Logistics, Air Launch, and Recovery (LALAR) eVTOL Platform","authors":"Yu Ito, M. Hayashida, Hiroyuki Yasuda","doi":"10.2514/6.2019-3005","DOIUrl":"https://doi.org/10.2514/6.2019-3005","url":null,"abstract":"","PeriodicalId":384114,"journal":{"name":"AIAA Aviation 2019 Forum","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124332897","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":"Identification of Lagrangian Coherent Structures using the Background-Oriented Schlieren Method","authors":"B. Harter, M. McCrink, J. Gregory","doi":"10.2514/6.2019-2810","DOIUrl":"https://doi.org/10.2514/6.2019-2810","url":null,"abstract":"","PeriodicalId":384114,"journal":{"name":"AIAA Aviation 2019 Forum","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126240993","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":"Luminescent Measurement Technique for Analysis of Dynamic Pressure and Strain Fields","authors":"Kyle B. Chism, Jack Kawell, J. Hubner","doi":"10.2514/6.2019-3150","DOIUrl":"https://doi.org/10.2514/6.2019-3150","url":null,"abstract":"","PeriodicalId":384114,"journal":{"name":"AIAA Aviation 2019 Forum","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126242783","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":"Afterbody Vortices of Axisymmetric Cylinders with a slanted base got by Numerical Simulation with LS-DYNA®","authors":"B. Perin","doi":"10.2514/6.2019-3277","DOIUrl":"https://doi.org/10.2514/6.2019-3277","url":null,"abstract":"","PeriodicalId":384114,"journal":{"name":"AIAA Aviation 2019 Forum","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126254602","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}
Jiawei Chen, Yongming Liu, Nancy J. Cooke, P. Tang
{"title":"Real-time Facial Expression and Head Pose Analysis for Monitoring the Workloads of Air Traffic Controllers","authors":"Jiawei Chen, Yongming Liu, Nancy J. Cooke, P. Tang","doi":"10.2514/6.2019-3412","DOIUrl":"https://doi.org/10.2514/6.2019-3412","url":null,"abstract":"","PeriodicalId":384114,"journal":{"name":"AIAA Aviation 2019 Forum","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126261705","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}
G. Brat, M. Davies, J. Koelling, J. Maddalon, P. Miner
{"title":"Moving the Validation and Verification Frontier: the System-Wide Safety March Towards Scalability and Autonomy","authors":"G. Brat, M. Davies, J. Koelling, J. Maddalon, P. Miner","doi":"10.2514/6.2019-2834","DOIUrl":"https://doi.org/10.2514/6.2019-2834","url":null,"abstract":"","PeriodicalId":384114,"journal":{"name":"AIAA Aviation 2019 Forum","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126501703","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":"Conceptual Design and Mission Analysis for eVTOL Urban Air Mobility Flight Vehicle Configurations","authors":"Akshay R. Kadhiresan, Michael J. Duffy","doi":"10.2514/6.2019-2873","DOIUrl":"https://doi.org/10.2514/6.2019-2873","url":null,"abstract":"","PeriodicalId":384114,"journal":{"name":"AIAA Aviation 2019 Forum","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125705119","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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