[{"data":1,"prerenderedAt":79},["ShallowReactive",2],{"/resources/papers/atmospheric-winds":3},{"id":4,"title":5,"authors":6,"badge":22,"body":24,"cta":65,"date":66,"description":67,"extension":68,"image":69,"links":65,"meta":73,"navigation":74,"path":75,"seo":76,"stem":77,"__hash__":78},"resources/resources/papers/atmospheric-winds.md","Replicating Atmospheric Wind and Turbulence",[7,12,17],{"name":8,"to":9,"avatar":10},"Aurélien Walpen","https://www.linkedin.com/in/aurelien-walpen/",{"src":11},"https://media.licdn.com/dms/image/v2/D4E03AQHzfl4pDAcAtw/profile-displayphoto-shrink_400_400/profile-displayphoto-shrink_400_400/0/1673371140229?e=1744243200&v=beta&t=m_8tor3Pn1L_paNR_y3w3baagJbiedQvbteKXAphbZc",{"name":13,"to":14,"avatar":15},"Guillaume Catry","https://www.linkedin.com/in/guillaume-catry",{"src":16},"/img/people/guillaume-catry.webp",{"name":18,"to":19,"avatar":20},"Flavio Noca (PhD)","https://www.linkedin.com/in/flavio-noca",{"src":21},"/img/people/flavio-noca.webp",{"label":23},"Research Paper",{"type":25,"value":26,"toc":59},"minimark",[27,32,36,39,42,45,49],[28,29,31],"h2",{"id":30},"abstract","Abstract",[33,34,35],"p",{},"Today, traditional drone testing techniques are of poor quality and do not reflect conditions that may be encountered in\nreal world applications. Drones are either flown outdoors in not well documented, uncontrolled and unpredictable weather\nconditions (and quite remote from the observer), or tightly strapped onto a support in a conventional wind tunnel with\nlaminar and uniform wind flows. Such wind flows have been devised for conventional aircraft and are inadequate\nrepresentations of atmospheric conditions relevant to drones.",[33,37,38],{},"In order to test drones in various and controllable atmospheric conditions, a real weather simulator was developed. The\nwind and weather facility (windshaper) consists of an array of a large number of fans that may be arranged in various\npatterns according to need. It subjects drones to winds of variable intensity and direction as well as various weather\nconditions (such as rain, snow, hail, fog etc.) that reflect real world situations. These tests can rate drones\naccording to their capacity in maintaining a proper flight attitude and tackling flight perturbations in an urban,\ncountryside, or high altitude environment.",[33,40,41],{},"In order to achieve these goals, a windshaper needs to replicate real environmental conditions. To do so, two key steps\nare to be undertaken: 1. document actual atmospheric turbulence at drone scales (in particular in an urban environment),\nand 2. develop a methodology to reproduce these flows in a windshaper.",[33,43,44],{},"Using a three-component hot-wire anemometer (HWA), a complete flow characterisation of a windshaper has been performed\nto evaluate the flow modulation capabilites of these new types of wind generating facilities. The HWA was then used to\ncollect a series of high-frequency outdoor measurements on a city rooftop. The measured outdoor velocity time history\nand its spectral content have then been replicated at actual scale in a windshaper by using an iterative algorithm in\nthe frequency domain.",[28,46,48],{"id":47},"full-article","Full Article",[33,50,51,52],{},"Link to the full article as PDF:\n",[53,54,58],"a",{"download":55,"href":56,"target":57},"WindShape-Free-Flight-GNSS-Scitech-2021.pdf","/articles/22023-AIAA-Scitech-Atmospheric-Wind.pdf","_blank","Download",{"title":60,"searchDepth":61,"depth":61,"links":62},"",2,[63,64],{"id":30,"depth":61,"text":31},{"id":47,"depth":61,"text":48},null,"2023-01-05","Real-Scale Atmospheric Wind and Turbulence Replication using a Fan-Array for Environmental Testing and UAV/AAM Validation","md",{"src":70,"width":71,"height":72},"/img/papers-header/2023-AIAA-Scitech-Atmospheric-Wind.png",1000,500,{},true,"/resources/papers/atmospheric-winds",{"title":5,"description":67},"resources/papers/atmospheric-winds","hmLx1AwmliXtIFPSNYoB1Px5wFEFfZrTpyDmpaCU3LI",1774344909558]