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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="content-type" content="text/html; charset=iso-8859-1" /> <meta name="keywords" content="airfoils applied aerodynamics" /> <title>UIUC APA-FAQ</title> <link href="_css/apaIndex.css" rel="stylesheet" type="text/css" /> <!--[if IE 5]> <style type="text/css"> /* place css box model fixes for IE 5* in this conditional comment */ .twoColFixLtHdr #sidebar1 { width: 230px; } </style> <![endif]--><!--[if IE]> <style type="text/css"> /* place css fixes for all versions of IE in this conditional comment */ .twoColFixLtHdr #sidebar1 { padding-top: 30px; } .twoColFixLtHdr #mainContent { zoom: 1; } /* the above proprietary zoom property gives IE the hasLayout it needs to avoid several bugs */ </style> <![endif]--> <style type="text/css"> <!-- body,td,th { font-size: 14px; } --> </style></head> <body class="twoColFixLtHdr"> <div id="container"> <div id="header"> <h1><img src="images/header8_wind.jpg" alt="header" /></h1> <!-- end #header --></div> <div id="sidebar1"> <h3><span>Select a Link:</span><img src="_css/h3_select_a_link.png" alt="select" /></h3> <ul> <li><a href="index.html">Home</a></li> <li><a href="research.html">Research</a></li> <li><a href="people.html">People</a></li> <li><a href="publications.html">Publications</a></li> <li><a href="contact.html">Contact</a></li> <li><a href="faq.html">FAQ</a></li> </ul> <h3><span>Resources:</span><img src="_css/h3_resources.png" alt="resources" /></h3> <ul> <li><a href="uiuc_lsat.html">UIUC LSATs</a></li> <li><a href="ads.html">UIUC Airfoil Data Site</a></li> <li><a href="props/propDB.html">UIUC Propeller Data Site</a></li> <li><a href="ads/aircraft.html">Incomplete Guide to Airfoil Usage</a></li> <li><a href="propid.html">PROPID</a></li> <li><a href="https://www.profoil.org">PROFOIL</a></li> <li><a href="https://github.com/m-selig/PROFOIL">PROFOIL GitHub</a></li> <!-- <li><a href="apasim.html">Flight Simulation [old]</a></li> --> </ul> <!-- <h3><span>Short Pieces:</span><img src="_css/h3_short_pieces.png" alt="shorts" /></h3> <ul> <li><a href="misc.html">Project Ornithopter</a></li> <li><a href="http://www.rcsoaringdigest.com/FlysFaster.html">Flies Faster</a></li> <li><a href="http://www.rcsoaringdigest.com/SquareCube.html">Square-Cube Law</a></li> </ul> --> <h3><span>Links:</span><img src="_css/h3_links.png" alt="links" /></h3> <ul> <li><a href="apaLinks.html">APA Links</a></li> </ul> <!-- end #sidebar1 --></div> <div id="mainContent"> <h2><span>FAQ</span><img src="headers/h2_faq.png" width="657" height="30" alt="faq" /></h2> <ol> <!-- <li><span style="font-style: italic">"We are interested in having an airfoil or propeller tested/designed at UIUC. What should be our next step?</span><br /> We have tested over 200 airfoils under various conditions at UIUC, many of which are new designs for special applications like UAVs and model-sized aircraft. We have tested over 100 propellers for low Reynolds number (UAV/model-sized) applications. Contact <a href="contact.html">Prof. M.S. Selig</a> for more information, e.g. model description, costs and scheduling.</li> --> <li><span style="font-style: italic">"I would like to find polars for a certain airfoil. Where can I get that info?"</span><br /> If you cannot find the experimental data, you can estimate the performance by running the XFOIL airfoil code which you can download from here: <a href="https://web.mit.edu/drela/Public/web/xfoil/">https://web.mit.edu/drela/Public/web/xfoil/</a>. Other airfoil tools can be found here: <a href="ads.html">https://m-selig.ae.illinois.edu/ads.html</a></li> <li><span style="font-style: italic">"What is the Reynolds number? How do propellers work? Can you explain a drag polar? "</span><br /> A great resource: <a href="https://www.mh-aerotools.de/airfoils/index.htm">Aerodynamics of Model Aircraft by Martin Hepperle</a> <li><a href="uiuc_lsat_faq.html">Low Reynolds number airfoil FAQ</a></li> <li><a href="ads_faq.html">UIUC Airfoil Data Site FAQ</a></li> <li><a href="uiuc_lsat.html#lsatsbooks">Where can I get the LSATs books with airfoil wind tunnel data?</a></li> <li><a href="ads/coord_database.html">Where is the UIUC Airfoil Data Site with all the airfoil coordinates?</a></li> <li><a href="pd.html">Where can I find the UIUC airfoil wind tunnel test data (UIUC LSATs data)?</a><br></li> <li><a href="ads/aircraft.html">What airfoil is used on the [fill in the blank] airplane?</a><br></li> <li>"Are you taking new students?": No, not at this time.</li> </ol> <!-- end #mainContent --> </div> <!-- This clearing element should immediately follow the #mainContent div in order to force the #container div to contain all child floats --><br class="clearfloat" /> <div id="footer"> <p>© 1994 - 2024 <a href="https://m-selig.ae.illinois.edu">UIUC Applied Aerodynamics Group</a> <br />Please send comments about this page to <a href="mailto:m-selig@illinois.edu">webmaster</a> <br /><a href="https://aerospace.illinois.edu/">Department of Aerospace Engineering</a> | <a href="https://illinois.edu/">University of Illinois at Urbana-Champaign</a> </p> <!-- end #footer --></div> <script> (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){ (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o), m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m) })(window,document,'script','//www.google-analytics.com/analytics.js','ga'); ga('create', 'UA-44594364-1', 'illinois.edu'); ga('send', 'pageview'); </script> <!-- end #container --></div> </body> </html>