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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/> <meta http-equiv="expires" content="43200"/>   <title>mediaTUM - Medien- und Publikationsserver</title> <meta name="generator" content="mediatum - a multimedia content repository"/> <link rel="icon" type="image/vnd.microsoft.icon" href="/favicon.ico"/> <link rel="apple-touch-icon" sizes="57x57" href="/apple-touch-icon-57x57.png"/> <link rel="apple-touch-icon" sizes="60x60" href="/apple-touch-icon-60x60.png"/> <link rel="apple-touch-icon" sizes="72x72" href="/apple-touch-icon-72x72.png"/> <link rel="apple-touch-icon" sizes="76x76" href="/apple-touch-icon-76x76.png"/> <link rel="apple-touch-icon" sizes="114x114" href="/apple-touch-icon-114x114.png"/> <link rel="apple-touch-icon" sizes="120x120" href="/apple-touch-icon-120x120.png"/> <link rel="apple-touch-icon" sizes="144x144" href="/apple-touch-icon-144x144.png"/> <link rel="apple-touch-icon" sizes="152x152" href="/apple-touch-icon-152x152.png"/> <link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon-180x180.png"/> <link rel="icon" type="image/png" href="/favicon-32x32.png" sizes="32x32"/> <link rel="icon" type="image/png" href="/favicon-194x194.png" sizes="194x194"/> <link rel="icon" type="image/png" href="/favicon-96x96.png" sizes="96x96"/> <link rel="icon" type="image/png" href="/android-chrome-192x192.png" sizes="192x192"/> <link rel="icon" type="image/png" href="/favicon-16x16.png" sizes="16x16"/> <meta name="msapplication-TileColor" content="#ffffff"/> <meta name="msapplication-TileImage" content="/mstile-144x144.png"/> <meta name="theme-color" content="#ffffff"/> <link rel="stylesheet" href="/static/css/mediatum.css"/> <script src="/static/js/mediatum.js"></script> <script src="/static/js/jquery-1.12.4.js"></script> <script type="text/javascript" language="javascript">function change_size(){ var searchform = $('#search-form').height(); var cheight = $('#portal-column-content').height()+12; $('#frame-tree').height(cheight-searchform); } $(window).resize(function() { change_size(); }); </script> <meta name="citation_title" content="Optimization of propellers under consideration of aeroacoustic and aerodynamic goals and installation effects"/> <meta name="citation_author" content="Schm盲hl, Michael"/> <meta name="citation_author" content="Hornung, Mirko"/> <meta name="citation_conference_title" content="Proceedings of Meetings on Acoustics"/> <meta name="citation_publication_date" content="2024"/> <meta name="citation_publication_date" content="2024"/> <meta name="citation_doi" content="10.1121/2.0001966"/> <meta name="DC.description" content="Urban Air Mobility (UAM) vehicles like air taxis and cargo unmanned aerial vehicles (UAVs) operate close to urban areas, which makes noise an important issue. Cargo UAVs are typically highly integrated in terms of functions, leading to a high extent of aerodynamic interactions between propellers and the airframe. As a result of these installation effects, unsteady loading noise can become the dominant part of the aerial vehicle noise emissions, which leads to a situation where classical propeller noise reduction measures like blade tip Mach number reduction do not necessarily lead to a reduction in the overall noise emissions anymore. Overcoming these uncertainties in propeller design necessitates propeller noise optimization on a propeller configuration level. In this work, an existing propeller optimization framework for isolated propellers was extended by consideration of propeller inflow velocity perturbation due to the propeller installation situation. This way, unsteady loading noise due to aerodynamic installation effects is resolved in a medium-fidelity optimization toolchain. Optimization results of a pusher propeller UAV configuration demonstrate that aircraft noise reductions require configuration level noise optimizations. Furthermore, it is shown how classical noise reduction measures can fall short in reducing installed aircraft propeller noise on a configuration level."/> <meta name="citation_firstpage" content="040010"/> <meta name="citation_conference_title" content="Proceedings of Meetings on Acoustics"/> <link rel="stylesheet" href="/static/css/mediatum-tum-editor.css"/> </head> <body onload="change_size();"> <div id="visual-portal-wrapper"> <div id="portal-top"> <div class="header header-left"> <script type="application/javascript" src="/static/js/webstat.js"></script> <noscript> <p><img src="https://webstat.srv.tum.de/matomo.php?idsite=78&rec=1" style="border:0;" alt="Matomo Image Tracker"/> </p> </noscript> <ul> <li><a href="/" class="mediatum-link-internal">mediaTUM</a> </li> <li><a href="https://www.ub.tum.de" class="mediatum-link-external">Universit盲tsbibliothek</a> </li> <li><a href="https://www.tum.de" class="mediatum-link-external">Technische Universit盲t M眉nchen</a> </li> </ul> </div> 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Nachhaltige mobile Antriebssysteme (Prof. Jaensch)<small> (20)</small></a> </div> </li> <li class="lv2"> <div style="padding-left: 30px" class="mediatum_portal_tree_link"><a href="/1732926" class="mediatum_portal_tree_subnav_link mediatum-link-mediatum">Lehrstuhl f眉r Nukleartechnik (Prof. Maci谩n-Juan)<small> (3)</small></a> </div> </li> <li class="lv2"> <div style="padding-left: 30px" class="mediatum_portal_tree_link"><a href="/1732943" class="mediatum_portal_tree_subnav_link mediatum-link-mediatum">Lehrstuhl f眉r Numerische Mechanik (Prof. Wall)<small> (22)</small></a> </div> </li> <li class="lv2"> <div style="padding-left: 30px" class="mediatum_portal_tree_link"><a href="/1732964" class="mediatum_portal_tree_subnav_link mediatum-link-mediatum">Lehrstuhl f眉r Produktentwicklung und Leichtbau (Prof. Zimmermann)<small> (14)</small></a> </div> </li> <li class="lv2"> <div style="padding-left: 30px" class="mediatum_portal_tree_link"><a href="/1732963" class="mediatum_portal_tree_subnav_link 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mediatum-link-mediatum">Lehrstuhl f眉r Windenergie (Prof. Bottasso)</a> </div> </li> <li class="lv2"> <div style="padding-left: 30px" class="mediatum_portal_tree_link"><a href="/1732993" class="mediatum_portal_tree_subnav_link mediatum-link-mediatum">Lehrstuhl f眉r Zerst枚rungsfreie Pr眉fung (Prof. Gro脽e)<small> (1)</small></a> </div> </li> <li class="lv2"> <div style="padding-left: 30px" class="mediatum_portal_tree_link"><a href="/1732977" class="mediatum_portal_tree_subnav_link mediatum-link-mediatum">Lehrstuhl und Pr眉famt f眉r Verkehrswegebau (Prof. Freudenstein)<small> (12)</small></a> </div> </li> <li class="lv2"> <div style="padding-left: 30px" class="mediatum_portal_tree_link"><a href="/1732868" class="mediatum_portal_tree_subnav_link mediatum-link-mediatum">Luftfahrtsysteme (Prof. Hornung)<small> (10)</small></a> </div> </li> <li class="lv2"> <div style="padding-left: 30px" class="mediatum_portal_tree_link"><a href="/1732883" class="mediatum_portal_tree_subnav_link 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Holztechnologie (Prof. van de Kuilen)</a> </div> </li> <li class="lv2"> <div style="padding-left: 30px" class="mediatum_portal_tree_link"><a href="/1732969" class="mediatum_portal_tree_subnav_link mediatum-link-mediatum">Professur f眉r Hydromechanik (Prof. Manhart)<small> (6)</small></a> </div> </li> <li class="lv2"> <div style="padding-left: 30px" class="mediatum_portal_tree_link"><a href="/1732987" class="mediatum_portal_tree_subnav_link mediatum-link-mediatum">Professur f眉r Immobilienentwicklung (Prof. Zhu)<small> (6)</small></a> </div> </li> <li class="lv2"> <div style="padding-left: 30px" class="mediatum_portal_tree_link"><a href="/1732902" class="mediatum_portal_tree_subnav_link mediatum-link-mediatum">Professur f眉r Landschaftsarchitektur regionaler Freir盲ume (Prof. Sch枚bel-Rutschmann)</a> </div> </li> <li class="lv2"> <div style="padding-left: 30px" class="mediatum_portal_tree_link"><a href="/1732966" class="mediatum_portal_tree_subnav_link mediatum-link-mediatum">Professur f眉r 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class="breadcrumb-delimiter mediatum-link-mediatum">2024</a><a href="/1732574" class="breadcrumb-delimiter mediatum-link-mediatum">Schools und Fakult盲ten</a><a href="/1732859" class="mediatum-link-mediatum">TUM School of Engineering and Design</a> </div> </div>   <div id="result-nav"> <table> <tr> <td align="left" valign="top" nowrap=""><a href="/1732859?nodes_per_page=10&result_nav=first"> <div id="mediatum_img_pageleft_end"></div></a><a href="/1732859?nodes_per_page=10&show_id=1773685&result_nav=prev"> <div id="mediatum_img_pageleft"></div></a> </td> <td width="100%" align="center"><a href="javascript: history.back()" class="mediatum-link-mediatum">Zur眉ck</a><br/><a href="/1732859?nodes_per_page=10" class="mediatum-link-mediatum">Zur眉ck zum Anfang der Trefferliste</a><br/><a href="/1773685" class="mediatum-link-mediatum">Dauerhafter Link zum angezeigten Objekt</a> </td> <td align="right" valign="top" nowrap=""><a href="/1732859?nodes_per_page=10&show_id=1773685&result_nav=next"> <div id="mediatum_img_pageright"></div></a><a href="/1732859?nodes_per_page=10&result_nav=last"> <div id="mediatum_img_pageright_end"></div></a> </td> </tr> </table><br/> </div>  <link rel="stylesheet" href="/static/css/childs.css"/> <link rel="stylesheet" href="/static/css/jade_style.css"/> <div class="object_main content_container"> <dl class="object_meta object_column"><dt class="mask_label">Titel:</dt> <dd class="mask_value"><h1>Optimization of propellers under consideration of aeroacoustic and aerodynamic goals and installation effects</h1></dd> <dt class="mask_label">Dokumenttyp:</dt> <dd class="mask_value">Konferenzbeitrag</dd> <dt class="mask_label">Autor(en):</dt> <dd class="mask_value">Schm盲hl, Michael; Hornung, Mirko</dd> <dt class="mask_label">Seitenangaben Beitrag:</dt> <dd class="mask_value">040010</dd> <dt class="mask_label">Abstract:</dt> <dd class="mask_value"><div id="abstract_full" style="display:none">Urban Air Mobility (UAM) vehicles like air taxis and cargo unmanned aerial vehicles (UAVs) operate close to urban areas, which makes noise an important issue. Cargo UAVs are typically highly integrated in terms of functions, leading to a high extent of aerodynamic interactions between propellers and the airframe. As a result of these installation effects, unsteady loading noise can become the dominant part of the aerial vehicle noise emissions, which leads to a situation where classical propeller noise reduction measures like blade tip Mach number reduction do not necessarily lead to a reduction in the overall noise emissions anymore. Overcoming these uncertainties in propeller design necessitates propeller noise optimization on a propeller configuration level. In this work, an existing propeller optimization framework for isolated propellers was extended by consideration of propeller inflow velocity perturbation due to the propeller installation situation. This way, unsteady loading noise due to aerodynamic installation effects is resolved in a medium-fidelity optimization toolchain. Optimization results of a pusher propeller UAV configuration demonstrate that aircraft noise reductions require configuration level noise optimizations. Furthermore, it is shown how classical noise reduction measures can fall short in reducing installed aircraft propeller noise on a configuration level.     <a href="#!" title="Text reduzieren" onclick="expandLongMetatext('abstract'); return false" class="mediatum-link-mediatum">«</a></div><div id="abstract_more"> Urban Air Mobility (UAM) vehicles like air taxis and cargo unmanned aerial vehicles (UAVs) operate close to urban areas, which makes noise an important issue. Cargo UAVs are typically highly integrated in terms of functions, leading to a high extent of aerodynamic interactions between propellers and the airframe. As a result of these installation effects, unsteady loading noise can become the dominant part of the aerial vehicle noise emissions, which leads to a situation where classical prop...     <a href="#!" title="gesamten Text zeigen" onclick="expandLongMetatext('abstract'); return false" class="mediatum-link-mediatum">»</a></div></dd> <dt class="mask_label">Stichworte:</dt> <dd class="mask_value">propeller noise optimization, UAV, aircraft noise, aeroacoustics, multidisciplinary design optimization</dd> <dt class="mask_label">Kongress- / Buchtitel:</dt> <dd class="mask_value">Proceedings of Meetings on Acoustics</dd> <dt class="mask_label">Verlag / Institution:</dt> <dd class="mask_value">ASA</dd> <dt class="mask_label">Publikationsdatum:</dt> <dd class="mask_value">01.01.2024</dd> <dt class="mask_label">Jahr:</dt> <dd class="mask_value">2024</dd> <dt class="mask_label">Nachgewiesen in:</dt> <dd class="mask_value">Scopus</dd> <dt class="mask_label">Volltext / DOI:</dt> <dd class="mask_value"><a href="https://doi.org/10.1121/2.0001966" target="_blank" title="In neuem Fenster anzeigen" class="mediatum-link-external">doi:10.1121/2.0001966</a></dd> <dt class="action_icon"><a href="/export/1773685/bibtex" target="bibtexdocument" title="BibTeX Informationen in neuem Fenster 枚ffnen" class="mediatum-link-mediatum"><img src="/static/img/bibtex.gif" class="mediatum-icon-small"/> BibTeX</a> </dt> </dl>  <div class="clear"></div> </div> <div class="clear"></div>  <div id="paths"><b>Vorkommen:</b><br/> <ul> <li><a href="/604993" class="breadcrumb-delimiter mediatum-link-mediatum">mediaTUM Gesamtbestand</a><a href="/670273" class="breadcrumb-delimiter mediatum-link-mediatum">Einrichtungen</a><a href="/670274" class="breadcrumb-delimiter mediatum-link-mediatum">Schools </a><a href="/1631378" class="breadcrumb-delimiter mediatum-link-mediatum">TUM School of Engineering and Design</a><a href="/1631381" class="breadcrumb-delimiter mediatum-link-mediatum">Departments</a><a href="/1631385" class="breadcrumb-delimiter mediatum-link-mediatum">Aerospace and Geodesy</a><a href="/1520889" class="mediatum-link-mediatum">Luftfahrtsysteme (Prof. Hornung)</a> </li> </ul> <ul> <li><a href="/604993" class="breadcrumb-delimiter mediatum-link-mediatum">mediaTUM Gesamtbestand</a><a href="/1433087" class="breadcrumb-delimiter mediatum-link-mediatum">Hochschulbibliographie</a><a href="/1732573" class="breadcrumb-delimiter mediatum-link-mediatum">2024</a><a href="/1732574" class="breadcrumb-delimiter mediatum-link-mediatum">Schools und Fakult盲ten</a><a href="/1732859" class="breadcrumb-delimiter mediatum-link-mediatum">TUM School of Engineering and Design</a><a href="/1732868" class="mediatum-link-mediatum">Luftfahrtsysteme (Prof. Hornung)</a> </li> </ul> </div>  </div> <div style="clear:both;"></div> </div> <div style="clear:both"></div> <div id="footer"><span class="footer_left"><a href="mailto:mediatum@ub.tum.de" class="customcontent mediatum-link-external">mediatum@ub.tum.de</a><a href="/?item=604993_15.html" class="customcontent mediatum-link-internal">Kontakt</a><a href="/?item=604993_17.html" class="customcontent mediatum-link-internal">脺ber mediaTUM</a><a href="/?item=604993_14.html" class="customcontent mediatum-link-internal">Hilfe</a></span><span class="footer_right"><a href="/?item=604993_12.html" class="customcontent mediatum-link-internal">Nutzungsrechte</a><a href="/?item=604993_9.html" class="customcontent mediatum-link-internal">Datenschutz</a><a href="/?item=604993_18.html" class="customcontent mediatum-link-internal">Barrierefreiheit</a><a href="https://www.ub.tum.de/impressum" class="customcontent mediatum-link-external">Impressum</a></span> </div> </div> </body> </html>