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src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3c/Raytheon_hawker_850xp_ei-kjc_arp.jpg/300px-Raytheon_hawker_850xp_ei-kjc_arp.jpg" decoding="async" width="300" height="199" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/3c/Raytheon_hawker_850xp_ei-kjc_arp.jpg/450px-Raytheon_hawker_850xp_ei-kjc_arp.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/3c/Raytheon_hawker_850xp_ei-kjc_arp.jpg/600px-Raytheon_hawker_850xp_ei-kjc_arp.jpg 2x" data-file-width="1719" data-file-height="1142" /></a><figcaption>Vortilons can be seen projecting from underneath the center leading edge of the wings of this <a href="/wiki/Hawker_850XP" class="mw-redirect" title="Hawker 850XP">Hawker 850XP</a></figcaption></figure> <p><b>Vortilons</b> are fixed <a href="/wiki/Aerodynamics" title="Aerodynamics">aerodynamic</a> devices on aircraft wings used to improve handling at low speeds.<sup id="cite_ref-flying.unicom_1-0" class="reference"><a href="#cite_note-flying.unicom-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>The vortilon was invented<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> by aerodynamicists working at <a href="/wiki/Douglas_Aircraft" class="mw-redirect" title="Douglas Aircraft">Douglas Aircraft</a> who had previously developed the engine pylons for the <a href="/wiki/Douglas_DC-8" title="Douglas DC-8">Douglas DC-8</a>. The original pylons which wrapped around the leading edge of the wing had to be cut back to reduce excessive cruise drag.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> Wind tunnel testing of the next Douglas commercial aircraft, the <a href="/wiki/Douglas_DC-9" class="mw-redirect" title="Douglas DC-9">Douglas DC-9</a> which had no under-wing engines, showed a cutback engine pylon would be beneficial to wing lift and upwash at the tail at the low speed stall. The pylon was reduced in size and became the vortilon (<b>VORT</b>ex-generating-p<b>YLON</b>).<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p><p>Vortilons consist of one or more flat plates attached to the underside of the <a href="/wiki/Wing" title="Wing">wing</a> near its leading edge, aligned with the flight direction.<sup id="cite_ref-Raymer8.2_6-0" class="reference"><a href="#cite_note-Raymer8.2-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> When the speed is reduced and the aircraft approaches <a href="/wiki/Stall_(flight)" class="mw-redirect" title="Stall (flight)">stall</a>, the local flow at the leading edge is diverted outwards; this spanwise component of velocity around the vortilon creates a <a href="/wiki/Vortex" title="Vortex">vortex</a> streamed around the top surface, which energises the <a href="/wiki/Boundary_layer" title="Boundary layer">boundary layer</a>.<sup id="cite_ref-Raymer8.2_6-1" class="reference"><a href="#cite_note-Raymer8.2-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> A more turbulent boundary layer, in turn, delays the local flow separation. </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Vortilons_on_a_Cozy_MKIV.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/21/Vortilons_on_a_Cozy_MKIV.jpg/220px-Vortilons_on_a_Cozy_MKIV.jpg" decoding="async" width="220" height="174" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/21/Vortilons_on_a_Cozy_MKIV.jpg/330px-Vortilons_on_a_Cozy_MKIV.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/21/Vortilons_on_a_Cozy_MKIV.jpg/440px-Vortilons_on_a_Cozy_MKIV.jpg 2x" data-file-width="3491" data-file-height="2765" /></a><figcaption>A view of three vortilons on the wing of a Cozy MKIV aircraft</figcaption></figure> <p>Vortilons are often used to improve low-speed <a href="/wiki/Aileron" title="Aileron">aileron</a> performance,<sup id="cite_ref-flying.unicom_1-1" class="reference"><a href="#cite_note-flying.unicom-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-flying.hawker_7-0" class="reference"><a href="#cite_note-flying.hawker-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> thereby increasing resistance to <a href="/wiki/Spin_(flight)" class="mw-redirect" title="Spin (flight)">spin</a>. They can be used as an alternative to <a href="/wiki/Wing_fence" title="Wing fence">wing fences</a>, which also restrict airflow along the span of the wing.<sup id="cite_ref-flying.unicom_1-2" class="reference"><a href="#cite_note-flying.unicom-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> Vortilons only stream vortices at high <a href="/wiki/Angle_of_attack" title="Angle of attack">angles of attack</a><sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> and produce less drag at higher speeds than wing fences.<sup id="cite_ref-flying.1000_9-0" class="reference"><a href="#cite_note-flying.1000-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> Pylons used to mount <a href="/wiki/Jet_engine" title="Jet engine">jet engines</a> under the wing produce a similar effect.<sup id="cite_ref-flight_10-0" class="reference"><a href="#cite_note-flight-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> </p><p>The occurrence of span-wise flow at high angles of attack, such as observed on <a href="/wiki/Swept_wing" title="Swept wing">swept wings</a>, is an essential requirement for vortilons to become effective. According to <a href="/wiki/Burt_Rutan" title="Burt Rutan">Burt Rutan</a>, vortilons installed on straight wings would not have any effect.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> </p><p>Vortilons were first introduced with the <a href="/wiki/McDonnell_Douglas_DC-9" title="McDonnell Douglas DC-9">McDonnell Douglas DC-9</a> to achieve a strong nose down pitching moment just beyond the normal stall and their influence ceased to have any effect beyond 30 degrees angle of attack.<sup id="cite_ref-flight_10-1" class="reference"><a href="#cite_note-flight-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> They have been used on subsequent aircraft, including: </p> <ul><li><a href="/wiki/McDonnell_Douglas_MD-80" title="McDonnell Douglas MD-80">McDonnell Douglas MD-80</a></li> <li><a href="/wiki/McDonnell_Douglas_MD-90" title="McDonnell Douglas MD-90">McDonnell Douglas MD-90</a></li> <li><a href="/wiki/Boeing_717" title="Boeing 717">Boeing 717</a></li> <li><a href="/wiki/Rutan_VariEze" title="Rutan VariEze">Rutan VariEze</a>, replacing <a href="/wiki/Leading_edge_cuff" class="mw-redirect" title="Leading edge cuff">leading edge cuffs</a> (1984)</li> <li><a href="/wiki/Rutan_Long-EZ" title="Rutan Long-EZ">Rutan Long-EZ</a></li> <li><a href="/wiki/Cozy_MK_IV" title="Cozy MK IV">Cozy MK IV</a></li> <li><a href="/wiki/BAe_125" class="mw-redirect" title="BAe 125">BAe 125</a> 1000 series<sup id="cite_ref-flying.1000_9-1" class="reference"><a href="#cite_note-flying.1000-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/Hawker_800" title="Hawker 800">Hawker 800XP</a><sup id="cite_ref-flying.hawker_7-1" class="reference"><a href="#cite_note-flying.hawker-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/Embraer_ERJ_145_family" class="mw-redirect" title="Embraer ERJ 145 family">Embraer ERJ 145 family</a><sup id="cite_ref-flying.unicom_1-3" class="reference"><a href="#cite_note-flying.unicom-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/Learjet_45" title="Learjet 45">Learjet 45</a><sup id="cite_ref-Smith_13-0" class="reference"><a href="#cite_note-Smith-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/A%C3%A9riane_Swift" title="Aériane Swift">Aériane Swift</a><sup id="cite_ref-Smith_13-1" class="reference"><a href="#cite_note-Smith-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup></li> <li>Experimental <a href="/wiki/Vought_F-8_Crusader" title="Vought F-8 Crusader">Vought F-8 Crusader</a> with supercritical wing. The supercritical wing would have been prone to pitch-up as the wing had increased sweep and aspect ratio compared to the standard wing. No pitch-up problems were experienced with vortilons fitted.<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/Bombardier_Challenger_300" title="Bombardier Challenger 300">Bombardier Challenger 300</a>, later becoming the Challenger 350 & new 3500 series.</li></ul> <p><br /> </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Vortilon&action=edit&section=1" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Vortex_generator" title="Vortex generator">Vortex generator</a></li> <li><a href="/wiki/Wing_fence" title="Wing fence">Wing fence</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Vortilon&action=edit&section=2" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-flying.unicom-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-flying.unicom_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-flying.unicom_1-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-flying.unicom_1-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-flying.unicom_1-3"><sup><i><b>d</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation journal cs1"><a rel="nofollow" class="external text" href="https://books.google.com/books?id=cSZdKLCDb7kC&q=Vortilon&pg=PA58">"Unicom"</a>. <i>Flying</i>: 75. July 2002<span class="reference-accessdate">. Retrieved <span class="nowrap">2011-10-07</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Flying&rft.atitle=Unicom&rft.pages=75&rft.date=2002-07&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DcSZdKLCDb7kC%26q%3DVortilon%26pg%3DPA58&rfr_id=info%3Asid%2Fen.wikipedia.org%3AVortilon" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHoughtonCarpenter2003" class="citation book cs1">Houghton, Edward Lewis; Carpenter, Peter William (2003). <span class="id-lock-limited" title="Free access subject to limited trial, subscription normally required"><a rel="nofollow" class="external text" href="https://archive.org/details/aerodynamicsfore00houg_081"><i>Aerodynamics for engineering students</i></a></span> (5th ed.). Oxford: Butterworth-Heinemann. pp. <a rel="nofollow" class="external text" href="https://archive.org/details/aerodynamicsfore00houg_081/page/n530">514</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0750651113" title="Special:BookSources/0750651113"><bdi>0750651113</bdi></a>. <a href="/wiki/OCLC_(identifier)" class="mw-redirect" title="OCLC (identifier)">OCLC</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/oclc/50441321">50441321</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Aerodynamics+for+engineering+students&rft.place=Oxford&rft.pages=514&rft.edition=5th&rft.pub=Butterworth-Heinemann&rft.date=2003&rft_id=info%3Aoclcnum%2F50441321&rft.isbn=0750651113&rft.aulast=Houghton&rft.aufirst=Edward+Lewis&rft.au=Carpenter%2C+Peter+William&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Faerodynamicsfore00houg_081&rfr_id=info%3Asid%2Fen.wikipedia.org%3AVortilon" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://patents.google.com/patent/US3370810">"Stall control device for swept wings"</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Stall+control+device+for+swept+wings&rft_id=https%3A%2F%2Fpatents.google.com%2Fpatent%2FUS3370810&rfr_id=info%3Asid%2Fen.wikipedia.org%3AVortilon" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external free" href="https://www.scribd.com/document/50976964/Applied-aerodynamics-at-the-Douglas-Aircraft-Company">https://www.scribd.com/document/50976964/Applied-aerodynamics-at-the-Douglas-Aircraft-Company</a>, Fig.23</span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external free" href="https://arc.aiaa.org/doi/abs/10.2514/3.43770">https://arc.aiaa.org/doi/abs/10.2514/3.43770</a>, p.Fig 13</span> </li> <li id="cite_note-Raymer8.2-6"><span class="mw-cite-backlink">^ <a href="#cite_ref-Raymer8.2_6-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Raymer8.2_6-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRaymer1999" class="citation book cs1">Raymer, Daniel P. (1999). "8.2 Aerodynamic Considerations in Configuration Layout". <span class="id-lock-limited" title="Free access subject to limited trial, subscription normally required"><a rel="nofollow" class="external text" href="https://archive.org/details/aircraftdesignco00raym_515"><i>Aircraft Design: A Conceptual Approach</i></a></span> (3rd ed.). Reston, Virginia: American Institute of Aeronautics and Astronautics. p. <a rel="nofollow" class="external text" href="https://archive.org/details/aircraftdesignco00raym_515/page/n99">183</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/1-56347-281-3" title="Special:BookSources/1-56347-281-3"><bdi>1-56347-281-3</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=8.2+Aerodynamic+Considerations+in+Configuration+Layout&rft.btitle=Aircraft+Design%3A+A+Conceptual+Approach&rft.place=Reston%2C+Virginia&rft.pages=183&rft.edition=3rd&rft.pub=American+Institute+of+Aeronautics+and+Astronautics&rft.date=1999&rft.isbn=1-56347-281-3&rft.aulast=Raymer&rft.aufirst=Daniel+P.&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Faircraftdesignco00raym_515&rfr_id=info%3Asid%2Fen.wikipedia.org%3AVortilon" class="Z3988"></span></span> </li> <li id="cite_note-flying.hawker-7"><span class="mw-cite-backlink">^ <a href="#cite_ref-flying.hawker_7-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-flying.hawker_7-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMcClellan2002" class="citation journal cs1">McClellan, J. Mac (November 2002). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=R5uhU9wKe7wC&q=Vortilon&pg=PA75">"Hawker 800XP"</a>. <i>Flying</i>: 75<span class="reference-accessdate">. Retrieved <span class="nowrap">2011-10-07</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Flying&rft.atitle=Hawker+800XP&rft.pages=75&rft.date=2002-11&rft.aulast=McClellan&rft.aufirst=J.+Mac&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DR5uhU9wKe7wC%26q%3DVortilon%26pg%3DPA75&rfr_id=info%3Asid%2Fen.wikipedia.org%3AVortilon" class="Z3988"></span></span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBarnardPhilpott2010" class="citation book cs1">Barnard, R.H.; Philpott, D.R. (2010). "Boundary layer and stalling problems on swept wings". <span class="id-lock-limited" title="Free access subject to limited trial, subscription normally required"><a rel="nofollow" class="external text" href="https://archive.org/details/aircraftflightde00hr"><i>Aircraft Flight</i></a></span> (4th ed.). Harlow, England: Prentice Hall. p. <a rel="nofollow" class="external text" href="https://archive.org/details/aircraftflightde00hr/page/n83">75</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-273-73098-9" title="Special:BookSources/978-0-273-73098-9"><bdi>978-0-273-73098-9</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Boundary+layer+and+stalling+problems+on+swept+wings&rft.btitle=Aircraft+Flight&rft.place=Harlow%2C+England&rft.pages=75&rft.edition=4th&rft.pub=Prentice+Hall&rft.date=2010&rft.isbn=978-0-273-73098-9&rft.aulast=Barnard&rft.aufirst=R.H.&rft.au=Philpott%2C+D.R.&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Faircraftflightde00hr&rfr_id=info%3Asid%2Fen.wikipedia.org%3AVortilon" class="Z3988"></span></span> </li> <li id="cite_note-flying.1000-9"><span class="mw-cite-backlink">^ <a href="#cite_ref-flying.1000_9-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-flying.1000_9-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMcClellan1993" class="citation journal cs1">McClellan, J. Mac (February 1993). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=XPB1MpYNfPUC&q=Vortilon&pg=PA88">"BAE 1000 Lifts Hawker Name to New Heights"</a>. <i>Flying</i>: 88<span class="reference-accessdate">. Retrieved <span class="nowrap">2011-10-07</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Flying&rft.atitle=BAE+1000+Lifts+Hawker+Name+to+New+Heights&rft.pages=88&rft.date=1993-02&rft.aulast=McClellan&rft.aufirst=J.+Mac&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DXPB1MpYNfPUC%26q%3DVortilon%26pg%3DPA88&rfr_id=info%3Asid%2Fen.wikipedia.org%3AVortilon" class="Z3988"></span></span> </li> <li id="cite_note-flight-10"><span class="mw-cite-backlink">^ <a href="#cite_ref-flight_10-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-flight_10-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation journal cs1"><a rel="nofollow" class="external text" href="http://www.flightglobal.com/pdfarchive/view/1965/1965%20-%200804.html">"The DC-9 and the Deep Stall"</a>. <i>Flight International</i>: 442. 25 March 1965<span class="reference-accessdate">. Retrieved <span class="nowrap">2011-10-07</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Flight+International&rft.atitle=The+DC-9+and+the+Deep+Stall&rft.pages=442&rft.date=1965-03-25&rft_id=http%3A%2F%2Fwww.flightglobal.com%2Fpdfarchive%2Fview%2F1965%2F1965%2520-%25200804.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AVortilon" class="Z3988"></span></span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text">Vortilons for Variezes, <i>The canard pusher</i>, n°42, October 1984</span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFShevellSchaufele1966" class="citation journal cs1">Shevell, Richard S.; Schaufele, Roger D. (November–December 1966). "Aerodynamic Design Features of the DC-9". <i>Journal of Aircraft</i>. <b>3</b> (6): 515–523. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.2514%2F3.43770">10.2514/3.43770</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+Aircraft&rft.atitle=Aerodynamic+Design+Features+of+the+DC-9&rft.volume=3&rft.issue=6&rft.pages=515-523&rft.date=1966-11%2F1966-12&rft_id=info%3Adoi%2F10.2514%2F3.43770&rft.aulast=Shevell&rft.aufirst=Richard+S.&rft.au=Schaufele%2C+Roger+D.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AVortilon" class="Z3988"></span></span> </li> <li id="cite_note-Smith-13"><span class="mw-cite-backlink">^ <a href="#cite_ref-Smith_13-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Smith_13-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSmith" class="citation web cs1">Smith, Steve. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20101111120921/http://quest.nasa.gov/aero/question/aerotheory/Resources_for_Learning_about_Vortilons.txt">"Resources for learning about vortilons"</a>. NASA Quest. Archived from <a rel="nofollow" class="external text" href="https://quest.nasa.gov/aero/question/aerotheory/Resources_for_Learning_about_Vortilons.txt">the original</a> on 2010-11-11<span class="reference-accessdate">. Retrieved <span class="nowrap">2011-10-07</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Resources+for+learning+about+vortilons&rft.pub=NASA+Quest&rft.aulast=Smith&rft.aufirst=Steve&rft_id=http%3A%2F%2Fquest.nasa.gov%2Faero%2Fquestion%2Faerotheory%2FResources_for_Learning_about_Vortilons.txt&rfr_id=info%3Asid%2Fen.wikipedia.org%3AVortilon" class="Z3988"></span></span> </li> <li id="cite_note-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-14">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external free" href="https://archive.org/details/DTIC_ADA247719">https://archive.org/details/DTIC_ADA247719</a> 8-4</span> </li> <li id="cite_note-15"><span class="mw-cite-backlink"><b><a href="#cite_ref-15">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external free" href="https://www.nasa.gov/centers/dryden/pdf/88410main_H-1957V1.pdf,p.87">https://www.nasa.gov/centers/dryden/pdf/88410main_H-1957V1.pdf,p.87</a> <sup class="noprint Inline-Template"><span style="white-space: nowrap;">[<i><a href="/wiki/Wikipedia:Link_rot" title="Wikipedia:Link rot"><span title=" Dead link tagged February 2022">dead link</span></a></i><span style="visibility:hidden; color:transparent; padding-left:2px">‍</span>]</span></sup></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Vortilon&action=edit&section=3" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Commons-logo.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/12px-Commons-logo.svg.png" decoding="async" width="12" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/24px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></a></span> Media related to <a href="https://commons.wikimedia.org/wiki/Category:Vortilon" class="extiw" title="commons:Category:Vortilon">Vortilon</a> at Wikimedia Commons</li> <li><a rel="nofollow" class="external text" href="http://www.aerospaceweb.org/question/aerodynamics/q0228.shtml">Wing Vortex Devices</a> from Aerospaceweb.org explains vortilons and other vortex-generating wing appliances</li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist 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skin</a></li> <li><a href="/wiki/Strut" title="Strut">Strut</a></li> <li><a href="/wiki/T-tail" title="T-tail">T-tail</a></li> <li><a href="/wiki/Tailplane" title="Tailplane">Tailplane</a></li> <li><a href="/wiki/Trailing_edge" title="Trailing edge">Trailing edge</a></li> <li><a href="/wiki/Twin_tail#Variations" title="Twin tail">Triple tail</a></li> <li><a href="/wiki/Twin_tail" title="Twin tail">Twin tail</a></li> <li><a href="/wiki/V-tail" title="V-tail">V-tail</a></li> <li><a href="/wiki/Vertical_stabilizer" title="Vertical stabilizer">Vertical stabilizer</a></li> <li><a href="/wiki/Wing_root" title="Wing root">Wing root</a></li> <li><a href="/wiki/Wing_tip" title="Wing tip">Wing tip</a></li> <li><a href="/wiki/Wingbox" title="Wingbox">Wingbox</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Aircraft_flight_control_system" title="Aircraft flight control system">Flight controls</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Aileron" title="Aileron">Aileron</a></li> <li><a href="/wiki/Air_brake_(aeronautics)" title="Air brake (aeronautics)">Airbrake</a></li> <li><a href="/wiki/Aircraft_flight_control_system#Artificial_feel_devices" title="Aircraft flight control system">Artificial feel</a></li> <li><a href="/wiki/Autopilot" title="Autopilot">Autopilot</a></li> <li><a href="/wiki/Canard_(aeronautics)" title="Canard (aeronautics)">Canard</a></li> <li><a href="/wiki/Centre_stick" title="Centre stick">Centre stick</a></li> <li><a href="/wiki/Deceleron" title="Deceleron">Deceleron</a></li> <li><a href="/wiki/Dive_brake" title="Dive brake">Dive brake</a></li> <li><a href="/wiki/Dual_control_(aviation)" title="Dual control (aviation)">Dual control</a></li> <li><a href="/wiki/Electro-hydraulic_actuator" title="Electro-hydraulic actuator">Electro-hydraulic actuator</a></li> <li><a href="/wiki/Elevator_(aeronautics)" title="Elevator (aeronautics)">Elevator</a></li> <li><a href="/wiki/Elevon" title="Elevon">Elevon</a></li> <li><a href="/wiki/Flaperon" title="Flaperon">Flaperon</a></li> <li><a href="/wiki/Flight_control_modes" title="Flight control modes">Flight control modes</a></li> <li><a href="/wiki/Fly-by-wire" title="Fly-by-wire">Fly-by-wire</a></li> <li><a href="/wiki/Gust_lock" title="Gust lock">Gust lock</a></li> <li><a href="/wiki/HOTAS" title="HOTAS">HOTAS</a></li> <li><a href="/wiki/Rudder#Aircraft_rudders" title="Rudder">Rudder</a></li> <li><a href="/wiki/Rudder_pedal" title="Rudder pedal">Rudder pedals</a></li> <li><a href="/wiki/Servo_tab" title="Servo tab">Servo tab</a></li> <li><a href="/wiki/Side-stick" title="Side-stick">Side-stick</a></li> <li><a href="/wiki/Spoiler_(aeronautics)" title="Spoiler (aeronautics)">Spoiler</a></li> <li><a href="/wiki/Spoileron" title="Spoileron">Spoileron</a></li> <li><a href="/wiki/Stabilator" title="Stabilator">Stabilator</a></li> <li><a href="/wiki/Stick_pusher" title="Stick pusher">Stick pusher</a></li> <li><a href="/wiki/Stick_shaker" title="Stick shaker">Stick shaker</a></li> <li><a href="/wiki/Trim_tab" title="Trim tab">Trim tab</a></li> <li><a href="/wiki/Wing_warping" title="Wing warping">Wing warping</a></li> <li><a href="/wiki/Yaw_damper" title="Yaw damper">Yaw damper</a></li> <li><a href="/wiki/Yoke_(aeronautics)" title="Yoke (aeronautics)">Yoke</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Aerodynamics" title="Aerodynamics">Aerodynamic</a> and <a href="/wiki/High-lift_device" title="High-lift device">high-lift</a><br />devices</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Boeing_X-53_Active_Aeroelastic_Wing" title="Boeing X-53 Active Aeroelastic Wing">Active Aeroelastic Wing</a></li> <li><a href="/wiki/Adaptive_compliant_wing" title="Adaptive compliant wing">Adaptive compliant wing</a></li> <li><a href="/wiki/Anti-shock_body" title="Anti-shock body">Anti-shock body</a></li> <li><a href="/wiki/Blown_flap" title="Blown flap">Blown flap</a></li> <li><a href="/wiki/Channel_wing" title="Channel wing">Channel wing</a></li> <li><a href="/wiki/Leading-edge_extension#Dogtooth_extension" title="Leading-edge extension">Dog-tooth</a></li> <li><a href="/wiki/Drag-reducing_aerospike" title="Drag-reducing aerospike">Drag-reducing aerospike</a></li> <li><a href="/wiki/Flap_(aeronautics)" title="Flap (aeronautics)">Flap</a></li> <li><a href="/wiki/Gouge_flap" title="Gouge flap">Gouge flap</a></li> <li><a href="/wiki/Gurney_flap" title="Gurney flap">Gurney flap</a></li> <li><a href="/wiki/Krueger_flap" title="Krueger flap">Krueger flap</a></li> <li><a href="/wiki/Leading-edge_cuff" title="Leading-edge cuff">Leading-edge cuff</a></li> <li><a href="/wiki/Leading-edge_droop_flap" title="Leading-edge droop flap">Leading-edge droop flap</a></li> <li><a href="/wiki/Leading-edge_extension" title="Leading-edge extension">LEX</a></li> <li><a href="/wiki/Leading-edge_slat" title="Leading-edge slat">Slats</a></li> <li><a href="/wiki/Leading-edge_slot" title="Leading-edge slot">Slot</a></li> <li><a href="/wiki/Stall_strips" title="Stall strips">Stall strips</a></li> <li><a href="/wiki/Strake_(aeronautics)" title="Strake (aeronautics)">Strake</a></li> <li><a href="/wiki/Variable-sweep_wing" title="Variable-sweep wing">Variable-sweep wing</a></li> <li><a href="/wiki/Vortex_generator" title="Vortex generator">Vortex generator</a></li> <li><a class="mw-selflink selflink">Vortilon</a></li> <li><a href="/wiki/Wing_fence" title="Wing fence">Wing fence</a></li> <li><a href="/wiki/Wingtip_device" title="Wingtip device">Winglet</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Avionics" title="Avionics">Avionic</a> and <a href="/wiki/Flight_instruments" title="Flight instruments">flight<br />instrument</a> systems</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Airborne_collision_avoidance_system" title="Airborne collision avoidance system">ACAS</a></li> <li><a href="/wiki/Air_data_boom" title="Air data boom">Air data boom</a></li> <li><a href="/wiki/Air_data_computer" title="Air data computer">Air data computer</a></li> <li><a href="/wiki/Aircraft_periscope" class="mw-redirect" title="Aircraft periscope">Aircraft periscope</a></li> <li><a href="/wiki/Airspeed_indicator" title="Airspeed indicator">Airspeed indicator</a></li> <li><a href="/wiki/Altimeter" title="Altimeter">Altimeter</a></li> <li><a href="/wiki/Annunciator_panel" title="Annunciator panel">Annunciator panel</a></li> <li><a href="/wiki/Astrodome_(aeronautics)" title="Astrodome (aeronautics)">Astrodome</a></li> <li><a href="/wiki/Attitude_indicator" title="Attitude indicator">Attitude indicator</a></li> <li><a href="/wiki/Compass" title="Compass">Compass</a></li> <li><a href="/wiki/Course_deviation_indicator" title="Course deviation indicator">Course deviation indicator</a></li> <li><a href="/wiki/Electronic_flight_instrument_system" title="Electronic flight instrument system">EFIS</a></li> <li><a href="/wiki/Engine-indicating_and_crew-alerting_system" title="Engine-indicating and crew-alerting system">EICAS</a></li> <li><a href="/wiki/Flight_management_system" title="Flight management system">Flight management system</a></li> <li><a href="/wiki/Glass_cockpit" title="Glass cockpit">Glass cockpit</a></li> <li><a href="/wiki/Global_Positioning_System" title="Global Positioning System">GPS</a></li> <li><a href="/wiki/Head-up_display" title="Head-up display">Head-up display</a></li> <li><a href="/wiki/Heading_indicator" title="Heading indicator">Heading indicator</a></li> <li><a href="/wiki/Horizontal_situation_indicator" title="Horizontal situation indicator">Horizontal situation indicator</a></li> <li><a href="/wiki/Inertial_navigation_system" title="Inertial navigation system">INS</a></li> <li><a href="/wiki/Integrated_standby_instrument_system" title="Integrated standby instrument system">ISIS</a></li> <li><a href="/wiki/Multi-function_display" title="Multi-function display">Multi-function display</a></li> <li><a href="/wiki/Pitot%E2%80%93static_system" title="Pitot–static system">Pitot–static system</a></li> <li><a href="/wiki/Radar_altimeter" title="Radar altimeter">Radar altimeter</a></li> <li><a href="/wiki/Traffic_collision_avoidance_system" title="Traffic collision avoidance system">TCAS</a></li> <li><a href="/wiki/Transponder_(aeronautics)" title="Transponder (aeronautics)">Transponder</a></li> <li><a href="/wiki/Turn_and_slip_indicator" title="Turn and slip indicator">Turn and slip indicator</a></li> <li><a href="/wiki/Variometer" title="Variometer">Variometer</a></li> <li><a href="/wiki/Yaw_string" title="Yaw string">Yaw string</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Aircraft_engine" title="Aircraft engine">Propulsion</a> controls,<br /> devices and <a href="/wiki/Aircraft_fuel_system" title="Aircraft fuel system">fuel systems</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Autothrottle" title="Autothrottle">Autothrottle</a></li> <li><a href="/wiki/Drop_tank" title="Drop tank">Drop tank</a></li> <li><a href="/wiki/FADEC" title="FADEC">FADEC</a></li> <li><a href="/wiki/Fuel_tank#Aircraft" title="Fuel tank">Fuel tank</a></li> <li><a href="/wiki/Gascolator" title="Gascolator">Gascolator</a></li> <li><a href="/wiki/Inlet_cone" title="Inlet cone">Inlet cone</a></li> <li><a href="/wiki/Intake_ramp" title="Intake ramp">Intake ramp</a></li> <li><a href="/wiki/NACA_cowling" title="NACA cowling">NACA cowling</a></li> <li><a href="/wiki/NACA_duct" title="NACA duct">NACA duct</a></li> <li><a href="/wiki/Self-sealing_fuel_tank" title="Self-sealing fuel tank">Self-sealing fuel tank</a></li> <li><a href="/wiki/Splitter_plate_(aeronautics)" title="Splitter plate (aeronautics)">Splitter plate</a></li> <li><a href="/wiki/Throttle" title="Throttle">Throttle</a></li> <li><a href="/wiki/Thrust_lever" title="Thrust lever">Thrust lever</a></li> <li><a href="/wiki/Thrust_reversal" title="Thrust reversal">Thrust reversal</a></li> <li><a href="/wiki/Townend_ring" title="Townend ring">Townend ring</a></li> <li><a href="/wiki/War_emergency_power" title="War emergency power">War emergency power</a></li> <li><a href="/wiki/Wet_wing" title="Wet wing">Wet wing</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Landing_gear" title="Landing gear">Landing</a> and <a href="/wiki/Arresting_gear" title="Arresting gear">arresting gear</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Aircraft_tire" title="Aircraft tire">Aircraft tire</a></li> <li><a href="/wiki/Tailhook" title="Tailhook">Arrestor hook</a></li> <li><a href="/wiki/Autobrake" title="Autobrake">Autobrake</a></li> <li><a href="/wiki/Conventional_landing_gear" title="Conventional landing gear">Conventional landing gear</a></li> <li><a href="/wiki/Drogue_parachute" title="Drogue parachute">Drogue parachute</a></li> <li><a href="/wiki/Landing_gear" title="Landing gear">Landing gear</a></li> <li><a href="/wiki/Landing_gear_extender" title="Landing gear extender">Landing gear extender</a></li> <li><a href="/wiki/Oleo_strut" title="Oleo strut">Oleo strut</a></li> <li><a href="/wiki/Tricycle_landing_gear" title="Tricycle landing gear">Tricycle landing gear</a></li> <li><a href="/wiki/Tundra_tire" title="Tundra tire">Tundra tire</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Escape systems</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Ejection_seat" title="Ejection seat">Ejection seat</a></li> <li><a href="/wiki/Escape_crew_capsule" title="Escape crew capsule">Escape crew capsule</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other systems</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Aircraft_lavatory" title="Aircraft lavatory">Aircraft lavatory</a></li> <li><a href="/wiki/Auxiliary_power_unit" title="Auxiliary power unit">Auxiliary power unit</a></li> <li><a href="/wiki/Bleed_air" title="Bleed air">Bleed air system</a></li> <li><a href="/wiki/Deicing_boot" title="Deicing boot">Deicing boot</a></li> <li><a href="/wiki/Emergency_oxygen_system" title="Emergency oxygen system">Emergency oxygen system</a></li> <li><a href="/wiki/Environmental_control_system" title="Environmental control system">Environmental control system</a></li> <li><a href="/wiki/Flight_recorder" title="Flight recorder">Flight recorder</a></li> <li><a href="/wiki/Hydraulic_fluid#Aircraft_hydraulic_systems" title="Hydraulic fluid">Hydraulic system</a></li> <li><a href="/wiki/Ice_protection_system" title="Ice protection system">Ice protection system</a></li> <li><a href="/wiki/In-flight_entertainment" title="In-flight entertainment">In-flight entertainment system</a></li> <li><a href="/wiki/Landing_lights" title="Landing lights">Landing lights</a></li> <li><a href="/wiki/Navigation_light" title="Navigation light">Navigation light</a></li> <li><a href="/wiki/Passenger_service_unit" title="Passenger service unit">Passenger service unit</a></li> <li><a href="/wiki/Ram_air_turbine" title="Ram air turbine">Ram air turbine</a></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Vortilon&oldid=1187480697">https://en.wikipedia.org/w/index.php?title=Vortilon&oldid=1187480697</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Category</a>: <ul><li><a href="/wiki/Category:Aircraft_wing_components" title="Category:Aircraft wing components">Aircraft wing components</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><li><a href="/wiki/Category:All_articles_with_dead_external_links" title="Category:All articles 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