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Wingtip device

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997: 47: 1167: 1309: 744: 1325: 248: 184: 59: 759: 1297: 1278: 1259: 729: 268: 655:, in 1985, with an extended range and capacity, using a combination of winglets and increased span to carry the additional load. The winglets increased the 747-400's range by 3.5% over the 747-300, which is otherwise aerodynamically identical but has no winglets. Winglets are preferred for Boeing derivative designs based on existing platforms, because they allow maximum re-use of existing components. Newer designs are favoring increased span, other wingtip devices or a combination of both, whenever possible. 149: 954: 390: 774: 1072:
original application that was the focus of the NASA development. Yet, once the advantages of winglets were proven in competition, adoption was swift with gliders. The point difference between the winner and the runner-up in soaring competition is often less than one percent, so even a small improvement in efficiency is a significant competitive advantage. Many non-competition pilots fitted winglets for handling benefits such as increased
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originating at the leading edge of the wingtip and propagating backwards and inboard. This turbulence 'delaminates' the airflow over a small triangular section of the outboard wing, which destroys lift in that area. The fence/winglet drives the area where the vortex forms upward away from the wing surface, since the center of the resulting vortex is now at the tip of the winglet.
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Glider winglets were originally retrofitted directly to planar wings, with only a small, nearly right-angle, transition area. Once the performance of the winglet itself was optimized, attention was turned to the transition between the wing and winglet. A common application was tapering the transition area from the wing tip
1032:. Others had attempted to apply Whitcomb's winglets to gliders before, and they did improve climb performance, but this did not offset the parasitic drag penalty in high-speed cruise. Masak was convinced it was possible to overcome this hurdle. By trial and error, they ultimately developed successful winglet designs for 1141:
Aircraft designers employed mostly planar wing designs with simple dihedral after World War II, prior to the introduction of winglets. With the wide acceptance of winglets in new sailplane designs of the 1990s, designers sought to further optimize the aerodynamic performance of their wingtip designs.
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being located farther aft than for simple extensions of the span of conventional main wings. At high load factors, this relative aft location of the center of pressure causes the raked wingtip to be twisted more leading-edge down, reducing the bending moment on the inboard wing. However, the relative
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to the winglet chord and raking the transition area back, to place the winglet in the optimal position. If the tapered portion was canted upward, the winglet height could also be reduced. Eventually, designers employed multiple non-planar sections, each canting up at a greater angle, dispensing with
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convention. It employed the first winglets ever used on a production aircraft, either civilian or military. Learjet developed the winglet design without NASA assistance. Although the Model 28 was intended to be a prototype experimental aircraft, performance was such that it resulted in a production
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Tamarack Aerospace Group, a company founded in 2010 by aerospace structural engineer Nicholas Guida, has patented an Active Technology Load Alleviation System (ATLAS), a modified version of a wingtip device. The system uses Tamarack Active Camber Surfaces (TACS) to aerodynamically "switch off" the
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was a pioneer researcher in the field, having written a technical paper published in 1952 that called for drooped wingtips whose pointed rear tips focused the resulting wingtip vortex away from the upper wing surface. Drooped wingtips are often called "Hoerner tips" in his honor. Gliders and light
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has claimed that their Isis fan, equipped with wingtip devices, has superior efficiency. However, for certain high-volume, low-speed designs, wingtip devices may not improve efficiency. Another application of the same principle was introduced to the keel of the "America's Cup"- winning Australian
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The Masak winglets were originally retrofitted to production sailplanes, but within 10 years of their introduction, most high-performance gliders were equipped from the factory with winglets or other wingtip devices. It took over a decade for winglets to first appear on a production airliner, the
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Winglets and wingtip fences also increase efficiency by reducing vortex interference with laminar airflow near the tips of the wing, by 'moving' the confluence of low-pressure (over wing) and high-pressure (under wing) air away from the surface of the wing. Wingtip vortices create turbulence,
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Wingtip devices help prevent the flow around the wingtip of higher pressure air under the wing flowing to the lower pressure surface on top at the wingtip, which results in a vortex caused by the forward motion of the aircraft. Winglets also reduce the lift-induced drag caused by
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uses a new type of wingtip device. Resembling a three-way hybrid of a winglet, wingtip fence, and raked wingtip, Boeing claims that this new design should deliver an additional 1.5% improvement in fuel economy over the 10-12% improvement already expected from the 737 MAX.
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Aerodynamic improvements include a reduced diameter and decreased tip speeds. This results in quieter operation and reduced tip vortices. The 90° bend reduces the vortices that, on traditional blades, pick up debris that can contact the blades and cause nicks, gouges and
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The average commercial jet sees a 4-6 percent increase in fuel efficiency and as much as a 6% decrease in in-flight noise from the use of winglets. Actual fuel savings and the related carbon output can vary significantly by plane, route and flight conditions.
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which is activated when the aircraft senses an oncoming stress event, essentially simulating an actuating wingtip. However, the wingtip itself is fixed and the TACS are the only moving part of the wingtip system. Tamarack first introduced ATLAS for the
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devices which function in different manners, their intended effect is always to reduce an aircraft's drag. Wingtip devices can also improve aircraft handling characteristics and enhance safety for following aircraft. Such devices increase the effective
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Winglets are also applied to other business aircraft, reducing take-off distance to operate from smaller airports, and allowing higher cruise altitudes. Along winglets on new designs, aftermarket vendors developed retrofits. Winglet Technology, LLC of
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A wingtip fence refers to the winglets including surfaces extending both above and below the wingtip, as described in Whitcomb's early research. Both surfaces are shorter than or equivalent to a winglet possessing similar aerodynamic benefits. The
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and would require boosting the strength and weight of the wing. At some point, there is no net benefit from further increased span. There may also be operational considerations that limit the allowable wingspan (e.g., available width at
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commitment from Learjet. Flight tests showed that the winglets increased range by about 6.5 percent and improved directional stability. Learjet's application of winglets to production aircraft continued with newer models including the
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The earliest-known implementation of a Hoerner-style downward-angled "wingtip device" on a jet aircraft was during World War II. This was the so-called "Lippisch-Ohren" (Lippisch-ears), allegedly attributed to the
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To counteract this, the EH101's 'winged-tip' rotor blades create what its pilots call the "donut effect" – a circular window of clear air inside the dust storm that allows them to see the ground as they come in to
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model aircraft designs for decades. Non-planar wingtips provide the wake control benefit of winglets, with less parasitic drag penalty, if designed carefully. The non-planar wing tip is often swept back like a
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of 6,500 nmi (12,000 km) allows nonstop routes such as New York–Tokyo, it holds over 70 world and national flight records. The Rutan combined winglets-vertical stabilizer appeared on his
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is greater. A 3 ft (91 cm) winglet gives the performance gain of a 2 ft (61 cm) span increase but has the bending force of a 1 ft (30 cm) span increase.
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blades to reduce drag, reduce diameter, reduce noise and/or improve efficiency. By reducing aircraft blade tip vortices interacting with the ground surface during
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There has been research into actuating wingtip devices, including a filed patent application, though no aircraft currently uses this feature as described. The
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The term "winglet" was previously used to describe an additional lifting surface on an aircraft, like a short section between wheels on fixed undercarriage.
2548: 1836: 1662: 327:. This small contribution can be worthwhile over the aircraft's lifetime, provided the benefit offsets the cost of installing and maintaining the winglets. 2621: 2365: 2008: 1775: 1175:
effects of the wingtip device when the aircraft is experiencing high-g events such as large gusts or severe pull-ups. TACS are movable panels, similar to
235:. This became a standard feature of the approximately 320 completed He 162A jet fighters built, with hundreds more He 162A airframes going unfinished by 1624:. Engineering Division, Air Materiel Command; Wright-Patterson Air Force Base, Dayton, Ohio; United States Air Force archive. Technical Report No. 5752. 1048:, the trophy for the highest speed went to a winglet-equipped 15-meter class limited wingspan glider, exceeding the highest speed in the unlimited span 2636: 2155: 1919: 1296: 451:
for the result of his research on wingtip devices to reduce drag. The same month, he filed a U.S. patent for "wingtip airfoils", published in 1986.
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studies indicate that a given improvement in fuel efficiency correlates directly with the causal increase in the aircraft's lift-to-drag ratio.
2474: 2259: 807:, many operators have retrofitted their fleets with these for the fuel savings. Aviation Partners Boeing also offers blended winglets for the 175:
Simple flat end-plates did not cause a reduction in drag, because the increase in profile drag was greater than the decrease in induced drag.
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of the wingtip are subjected to less load, and they result in less induced loading on the outboard main wing. Additionally, the leading-edge
3406: 3052: 444: 2328: 2313: 1647: 1052:, an exceptional result. Masak went on to win the 1993 U.S. 15 Meter Nationals gliding competition, using winglets on his prototype 1308: 1965: 1339:(formerly the EH101) have a distinctive tip shape; pilots have found that this rotor design alters the downwash field and reduces 1951: 1625: 743: 500: 799:
by 4% for long-range flights and increase range by 130 or 200 nmi (240 or 370 km) for the 737-800 or the derivative
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from a reduced diameter propeller disk; the reduced propeller tip speed reduces noise, according to the manufacturer. Modern
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reduction of 700 tonnes per aircraft. The A320s fitted with Sharklets were delivered beginning in 2012. They are used on the
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patented the first functional winglets in 1910. Somerville installed the devices on his early biplane and monoplane designs.
1990: 1183:, on the trailing edge of the wing extension. The system is controlled by the aircraft's electrical system and a high-speed 3446: 891: 1709: 471:. Located on the 747's horizontal stabilizers, the devices increase the tailplane's effectiveness under the weight of the 3795: 3401: 3346: 3211: 2056: 1933: 996: 377:
improvement from winglets increases with the mission length. Blended winglets allow a steeper angle of attack reducing
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patented wing end-plates as a method for controlling wingtip vortices. In the United States, Scottish-born engineer
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were also used for testing, and the latter design was directly implemented by McDonnell Douglas on the derivative
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A blended winglet is attached to the wing with a smooth curve instead of a sharp angle and is intended to reduce
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and several other fixed-wing aircraft types by bending the blade tips back at a 90-degree angle to get the same
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Raked wingtips offer several weight-reduction advantages relative to simply extending the conventional main
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Non-planar wingtips are normally angled upwards in a polyhedral wing configuration, increasing the local
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A design approach and selected wind-tunnel results at high subsonic speeds for wing-tip mounted winglets
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has introduced a similar design to the 737 MAX wingtip device known as the split scimitar winglet, with
3441: 3396: 3087: 2130:"Airbus launches "Sharklet" large wingtip devices for A320 Family with commitment from Air New Zealand" 2078:. Vol. 4, no. 10. Boeing. March 2006. Airbus to test new winglets for single-aisle jetliners. 1049: 2573: 1915: 1561: 412:, further developed Hoerner's concept in response to the sharp increase in the cost of fuel after the 342:, and thus, the associated turbulence is greatest at low speed and high weight, which produced a high 3627: 3471: 3421: 2729: 2026: 1422: 2270: 2071: 1490: 3411: 2964: 2894: 1155: 942: 796: 468: 374: 315:
surface of the winglet, generating a force that angles inward and slightly forward, analogous to a
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Concept to Reality: Contributions of the Langley Research Center to US Civil Aircraft of the 1990s
1166: 3739: 3714: 3476: 3456: 3381: 3271: 3241: 3216: 3082: 3047: 2708: 962: 448: 429: 409: 394: 282: 161: 2750: 323:. The winglet converts some of the otherwise-wasted energy in the wingtip vortex to an apparent 3754: 3555: 3451: 3276: 3092: 2505:, Guida, Nicholas R., "Active winglet", published 2011-03-08, issued 2010-09-24 2295: 1437: 1189: 1151: 1028:, about designing winglets to improve performance on his 15-meter (49 ft) wingspan racing 1014: 1000: 232: 3734: 3652: 3642: 3147: 2859: 2181:"Airbus Selects Korean Air Aerospace to manufacture Sharklet wingtips for the A330neo Family" 1458: 1283: 472: 335: 312: 165: 2431: 247: 3699: 3502: 3296: 3107: 3062: 1355: 1336: 1264: 1229: 1091:, an early glider derivative design, incorporating winglets as factory standard equipment. 1033: 617: 527: 231:
characteristic present in the original He 162 design, related to its wings having a marked
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at the wing/winglet junction. A sharp interior angle in this region can interact with the
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was the first airliner with wingtip fences in 1985. Other Airbus models followed with the
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Assessment of Wingtip Modifications to Increase the Fuel Efficiency of Air Force Aircraft
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Committee on Assessment of Aircraft Winglets for Large Aircraft Fuel Efficiency (2007).
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on 8 May 2001. The Aviation Partners/Boeing 8 ft (2.4 m) extensions decrease
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first used winglet with its modern meaning referring to near-vertical extension of the
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and reduce fuel burn by up to 4% over longer sectors. This corresponds to an annual CO
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received US Patent no: 1,774,474 for his "Airfoil Control Means" on August 26, 1930.
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NASA Innovation in Aeronautics: Select Technologies That Have Shaped Modern Aviation
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D. Its wingspan was decreased by using blended winglets instead of raked wingtips.
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near the wing tip, with polyhedral wing designs themselves having been popular on
819:. In 2009 Airbus launched its "Sharklet" blended winglet, designed to enhance the 702:
flow causing a drag inducing vortex, negating some of the benefit of the winglet.
338:(e.g. "Light", "Heavy", etc.) because the vortex strength grows with the aircraft 267: 3759: 3724: 3575: 3496: 3461: 3426: 3221: 2869: 2380: 1899: 977: 860: 779: 764: 605: 601: 555: 425: 413: 343: 187: 120: 3127: 2994: 2736:. May 1, 1996. Winglets could bring operational benefits to the Boeing 747-200F. 1564:, Vincent J Burnelli, "Airfoil control means", published 26 Aug 1930 66:
behind a conventional wingtip (on the left) and a blended winglet (on the right)
3744: 3604: 2879: 2874: 1547: 1209: 1077: 1053: 984: 872: 734: 699: 675: 659: 633: 531: 358: 320: 275: 216: 132: 104: 99: 78: 31: 3525: 2413: 148: 3774: 3673: 3612: 3416: 3351: 2989: 2969: 2884: 2399: 1667:. Leatherhead, Surrey UK: Profile Publications Ltd. p. 5. Archived from 1073: 1045: 1040:, designed by Maughmer specifically for the winglet application. At the 1991 1007: 903: 820: 711: 579: 559: 535: 488: 331: 224: 953: 863:, takeoff and climb performance. Like winglets, they increase the effective 475:, though these were more for directional stability than for drag reduction. 3709: 3637: 3600: 3580: 3570: 3545: 3510: 3291: 3261: 3231: 3197: 3177: 3167: 3162: 3132: 3067: 2934: 2904: 2864: 1550:. Illinois Aviation Hall Of Fame. William E. "Billie" Somerville 1869–1950. 1512: 1420: 1388: 1383: 1237: 930: 787:
On February 18, 2000, blended winglets were announced as an option for the
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Another potential benefit of winglets is that they reduce the intensity of
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Aircraft component fixed to the end of the wings to improve performance
1694: 666:/200 was the first regional airliner to feature winglets in 1992. The 662:
was the first Russian and modern jet to feature winglets in 1988. The
215:, and first added to the M3 and M4 third and fourth prototypes of the 30:"Winglet" redirects here. For the personal transporter by Toyota, see 3704: 3622: 3550: 3515: 3371: 3152: 3137: 3117: 3072: 3057: 3014: 2999: 2984: 2919: 2889: 1367: 1217: 1029: 530:
explored winglets in the late 1970s and incorporated winglets in the
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prototype aircraft, fitted with vertical wing extensions, c.1935–1937
2090:"American Airlines takes delivery of its first A320 Family aircraft" 1608: 1606: 3617: 3590: 3565: 3331: 3311: 3172: 3102: 3019: 2944: 2914: 2850: 1966:"The impact of winglets on fuel consumption and aircraft emissions" 938: 879: 316: 300: 227:
for evaluation. This addition was done in order to counteract the
91: 82: 1644:"A German aerodynamicist, a California character, and a corkscrew" 1099: 3391: 3042: 3024: 2949: 2329:"Boeing Says Radical New Winglets on 737 MAX Will Save More Fuel" 1603: 1245: 1241: 1180: 1064: 1037: 836: 832: 703: 652: 629: 621: 609: 378: 236: 1084:, so they are usually installed only at the pilot's preference. 882:. At high load-factor structural design conditions, the smaller 558:
should have tested its elliptical winglets designed to increase
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Understanding aerodynamics : arguing from the real physics
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which limits visibility in dusty areas and leads to accidents.
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Detail view of the wingtip device on a wind turbine rotor-blade
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use winglets while other designs such as later versions of the
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would have had a 170 ft (51.7 m) wingspan to fit in
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The initial concept dates back to 1897, when English engineer
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2005 Performance and Flight Operations Engineering Conference
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NASA's most notable application of wingtip devices is on the
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Robert Faye, Robert Laprete, Michael Winter (January 2002).
1138:. A winglet is also a special case of a non-planar wingtip. 921:-200LR/300ER/Freighter (February 24, 2003), the 737-derived 405: 296: 279: 260: 1405: 2794:"The benefits of winglets and performance enhancing kits" 2549:"EASA Approves Tamarack Fixes To Lift Atlas Emergency AD" 1952:"Dick Rutan, Jeana Yeager, and the Flight of the Voyager" 1370:
at the tips, resembling a raked tip on an aircraft wing.
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in powered aircraft and increases cross-country speed in
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Performance and Flight Operations Engineering Conference
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Bargsten, Clayton J.; Gibson, Malcolm T. (August 2011).
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was the first aircraft with split-tip winglets in 1990.
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aircraft have made use of Hoerner tips for many years.
2687:"Winglets: Help or Hindrance to HVLS Fan Performance?" 2092:(Press release). Airbus. July 23, 2013. Archived from 632:
have blended winglets rather than wingtip fences. The
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and roll authority and reduced tendency for wing tip
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Corporate information – Innovation & technology
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The Heinkel He 162 (Aircraft in Profile number 203)
1192:aircraft, and it has been certified for use by the 895:aft-movement of the center of pressure accentuates 2779:"Wingtip Devices: What They Do and How They Do It" 2049: 1991:"From the A300 to the A380: Pioneering leadership" 1733: 1690: 1688: 1686: 1582:"Wingtip Devices: What They Do and How They Do It" 1560: 1510: 550:business aircraft design that first flew in 1986. 307:) of the winglet, its inward or outward angle (or 2770:Aircraft Technology Engineering & Maintenance 3772: 2722:International NurflĂĽgelmeeting des MFC OsnabrĂĽck 2620:: CS1 maint: bot: original URL status unknown ( 2606:. Archived from the original on March 18, 2001. 2426: 2364:: CS1 maint: bot: original URL status unknown ( 2316:(Press release). United Airlines. July 17, 2013. 2260:"787 Dreamliner: A New Airplane for a New World" 2209: 2051:"American Airlines Set To Debut 767 Winglet Mod" 2007:: CS1 maint: bot: original URL status unknown ( 1774:: CS1 maint: bot: original URL status unknown ( 855:than the rest of the wing, are featured on some 674:followed with canted winglets in 1993/1994. The 2742:"New Boeing 777-300ER Bristles with Technology" 2715: 1683: 710:develops blended winglets as retrofits for the 686:(nĂ©e CSeries), from 2016, has canted winglets. 2354:. Archived from the original on June 11, 2004. 1814:William Freitag, Terry Schulze (Summer 2009). 1354:developed their "Q-tip" propeller used on the 917:-400ER (first flight on October 9, 1999), the 843:. They are also offered as a retrofit option. 2823: 2803:. No. 109. December 2016 – January 2017. 2669: 2643:. National Geographic Channel. Archived from 2257: 2122: 1788: 1706:National Aeronautics and Space Administration 578:Conventional winglets were fitted to Rutan's 491:, the first commercial aircraft with winglets 1872:. Chichester: Wiley-Blackwell. p. 422. 1661:Creek, J. Richard; Conway, William (1972) . 1573: 1442:: CS1 maint: multiple names: authors list ( 851:Raked wingtips, where the tip has a greater 2776: 2703: 2672:"Isis ceiling fan claims higher efficiency" 2600:Product Support: Frequently Asked Questions 2345: 2326: 1895:"Bowie Youth Sweeps Science 'World Series'" 1660: 1203: 585: 2830: 2816: 2744:(Press release). Boeing. October 16, 2003. 2684: 2047: 1506: 1504: 1502: 1500: 1319: 1228:Wingtip devices are also used on rotating 1170:Tamarack Aerospace's active wingtip device 682:aircraft to feature winglets in 1994. The 445:International Science and Engineering Fair 73:are intended to improve the efficiency of 2520: 2472: 1762:London City Airport Wake Turbulence Study 1346: 1223: 90:of a wing without greatly increasing the 2748: 2678: 2546: 2203: 2153: 2023:"Next-Generation 737 Program Milestones" 1934:"Winglets Coming For Citation X Bizjets" 1641: 1463:. National Academies Press. p. 33. 1323: 1165: 1161: 1098: 1058: 995: 952: 482: 388: 266: 246: 182: 147: 57: 45: 2228: 1954:. U.S. Centennial of Flight Commission. 1497: 1382:have wingtip devices. Fan manufacturer 198:Following the end of World War II, Dr. 14: 3773: 2763:"Winglets: making their presence felt" 2634: 2118:(Press release). Airbus. May 31, 2010. 1892: 1867: 1816:"Blended Winglets Improve Performance" 1579: 501:National Business Aviation Association 439:In May 1983, a high school student at 81:. Although there are several types of 2811: 2590: 2588: 2501: 2497: 2495: 2468: 2466: 2464: 2378: 2149: 2147: 1373: 1198:European Union Aviation Safety Agency 1094: 2635:Harvey, Gareth (November 28, 2005). 2473:Gerzanics, Mike (October 23, 2019). 2057:Aviation Week & Space Technology 1650:from the original on March 22, 2016. 1631:from the original on March 16, 2013. 1615:"Aerodynamic Shape of the Wing Tips" 913:Raked wingtips are installed on the 616:. Other Airbus models including the 478: 384: 178: 2521:Bergqvist, Pia (February 6, 2018). 2231:"Blunt Leading-Edge Raked Wingtips" 2210:George C. Larson (September 2001). 2136:. November 15, 2009. Archived from 1837:"Winglets allow for steeper climbs" 689: 24: 2628: 2585: 2492: 2461: 2144: 1271:with distinctive blade tip profile 1131: 1103:A Falcon 50 with a spiroid winglet 803:as standard. Also offered for the 639: 370: 143: 25: 3807: 2697: 94:. Extending the span would lower 2229:Herrick, Larry (June 12, 1998). 2154:Gardiner, Ginger (May 1, 2014). 2048:Guy Norris (February 23, 2009). 1793:. Electrocution. pp. 2–11. 1708:. pp. 11–22. Archived from 1314:Ceiling fan with wingtip devices 1307: 1295: 1276: 1257: 1134:and may also be combined with a 846: 772: 757: 742: 727: 594: 495:Learjet exhibited the prototype 436:, which was rolled out in 1990. 138: 2709:"Winglet Design for Sailplanes" 2685:Eddie Boyd (February 4, 2014). 2663: 2566: 2540: 2514: 2447: 2420: 2406: 2381:"Winglet Design for Sailplanes" 2379:Masak, Peter (April–May 1992). 2372: 2352:Engineering Penn State magazine 2339: 2320: 2306: 2288: 2267:ACI-NA Commissioners Conference 2251: 2222: 2173: 2108: 2082: 2064: 2041: 2015: 1983: 1958: 1944: 1926: 1907: 1886: 1829: 1807: 1782: 1747: 1727: 1194:Federal Aviation Administration 647:announced a new version of the 573: 454: 3740:In-flight entertainment system 3437:Horizontal situation indicator 2670:Nino Machetti (May 10, 2010). 2547:Finfrock, Rob (July 8, 2019). 2416:. Mifflin Soaring Association. 2258:Rich Breuhaus (May 20, 2008). 1791:Jar Professional Pilot Studies 1654: 1554: 1540: 1450: 1110:developed and flight tested a 443:won a grand prize at the 34th 13: 1: 2749:Joe Yoon (November 2, 2003). 1893:Wynter, Leon (May 18, 1983). 1613:Hoerner, Dr. Sighard (1952). 1398: 1335:The main rotor blades of the 1026:Pennsylvania State University 908:ICAO Aerodrome Reference Code 441:Bowie High School in Maryland 422:Dryden Flight Research Center 3720:Environmental control system 2716:Martin Hepperle (May 1993). 1524:NASA Langley Research Center 1135: 948: 7: 2751:"Boeing 767 Raked Wingtips" 2553:Aviation International News 2455:"Types of blended winglets" 2346:Curtis Chan (Summer 2000). 2327:Matt Molnar (May 2, 2012). 2212:"How Things Work: Winglets" 1734:Richard T. Witcomb (1976), 1511:Joseph R. Chambers (2003). 1042:World Gliding Championships 945:wings has a raked wingtip. 933:(February 8, 2010) and the 857:Boeing Commercial Airplanes 566:departures to retrofit the 127:, in both cases increasing 10: 3812: 3796:NASA spin-off technologies 3397:Course deviation indicator 3088:Electro-hydraulic actuator 2718:"A close Look at Winglets" 991: 752:sharklet (blended winglet) 242: 36: 29: 3687: 3666: 3628:Conventional landing gear 3599: 3495: 3330: 3196: 3033: 2849: 1842:. FACC AG. Archived from 1158:use non-planar wingtips. 1036:, using a new PSU–90–125 1020:called on aerodynamicist 957:737 MAX split-tip winglet 929:(December 15, 2009), the 295:research in the 1970s at 3791:Aircraft wing components 3412:Flight management system 2348:"The tip of the iceberg" 2300:Aviation Partners Boeing 2269:. Boeing. Archived from 2216:Air & Space Magazine 2025:. Boeing. Archived from 1825:. Boeing. pp. 9–12. 1642:Sakrison, David (2004). 1204:Actuating wingtip device 1156:Schempp-Hirth Duo Discus 980:as the launch customer. 586:Airliner fuel efficiency 469:Shuttle Carrier Aircraft 37:Not to be confused with 3786:Aircraft configurations 3715:Emergency oxygen system 3477:Turn and slip indicator 3272:Leading-edge droop flap 3242:Drag-reducing aerospike 3217:Adaptive compliant wing 3212:Active Aeroelastic Wing 2503:US patent 7900877B1 2414:"Past Mifflin Contests" 1320:Rotorcraft applications 1147:the winglets entirely. 963:McDonnell Douglas MD-11 459: 449:Albuquerque, New Mexico 430:McDonnell Douglas DC-10 410:Langley Research Center 395:McDonnell Douglas MD-11 303:. The upward angle (or 259:showing airflow during 162:Frederick W. Lanchester 3755:Passenger service unit 3556:Self-sealing fuel tank 3452:Multi-function display 1789:Phil Croucher (2005). 1622:USAF Technical Reports 1432:. No. 17. Boeing. 1347:Propeller applications 1332: 1224:Use on rotating blades 1190:Cessna Citation family 1171: 1152:Schempp-Hirth Discus-2 1104: 1068: 1010: 1006:with factory winglets 1001:Schempp-Hirth Ventus-2 958: 492: 398: 288: 264: 195: 157: 67: 55: 3781:Aircraft aerodynamics 3735:Ice protection system 3653:Tricycle landing gear 3643:Landing gear extender 2860:Aft pressure bulkhead 1868:McLean, Doug (2013). 1715:on September 21, 2021 1580:McLean, Doug (2005). 1391:of 1982, designed by 1327: 1284:C-130J Super Hercules 1169: 1162:Active wingtip device 1114:Spiroid winglet on a 1102: 1062: 999: 972:, third-party vendor 956: 925:(25 April 2009), the 636:uses wingtip fences. 486: 473:Space Shuttle orbiter 392: 353:Aircraft such as the 286:transonic wind tunnel 270: 250: 186: 166:William E. Somerville 151: 98:, but would increase 61: 49: 3700:Auxiliary power unit 3108:Flight control modes 2777:Doug McLean (2005). 2734:Flight International 2641:Engineering Archives 2457:. Aviation Partners. 2140:on November 7, 2017. 1356:Piper PA-42 Cheyenne 1337:AgustaWestland AW101 1328:Wingtip device on a 1265:AgustaWestland AW101 1034:gliding competitions 618:Airbus A320 Enhanced 528:Gulfstream Aerospace 336:classified by weight 209:Messerschmitt Me 163 3679:Escape crew capsule 3586:War emergency power 3457:Pitot–static system 3302:Variable-sweep wing 3010:Vertical stabilizer 2191:on January 26, 2023 2096:on November 7, 2017 1849:on November 7, 2017 1591:. Boeing: Article 4 1364:scimitar propellers 1288:scimitar propellers 1089:Glaser-Dirks DG-303 1063:PSU-90-125 winglet 1015:mechanical engineer 970:737 Next Generation 923:Boeing P-8 Poseidon 801:Boeing Business Jet 767:with raked wingtips 548:Beechcraft Starship 542:. The Gulfstream V 418:KC-135 Stratotanker 402:Richard T. Whitcomb 253:KC-135 Stratotanker 75:fixed-wing aircraft 3387:Attitude indicator 3367:Airspeed indicator 3362:Aircraft periscope 2730:"Winglet benefits" 2604:Hartzell Propeller 1671:on August 19, 2013 1374:Other applications 1352:Hartzell Propeller 1333: 1172: 1105: 1095:Non-planar wingtip 1069: 1011: 959: 892:center of pressure 817:Airbus A320 family 664:Bombardier CRJ-100 493: 399: 293:Richard Whitcomb's 289: 265: 263:tests in 1979–1980 213:Alexander Lippisch 200:Sighard F. Hoerner 196: 158: 117:lift-to-drag ratio 68: 56: 3768: 3767: 3695:Aircraft lavatory 3432:Heading indicator 3377:Annunciator panel 3357:Air data computer 3267:Leading-edge cuff 2801:Aircraft Commerce 2772:. April–May 2004. 2029:on April 29, 2008 1940:. March 13, 2007. 1938:Aero news network 1800:978-0-9681928-2-5 1470:978-0-309-38382-0 1330:NHIndustries NH90 1108:Aviation Partners 974:Aviation Partners 865:wing aspect ratio 708:Aviation Partners 696:interference drag 479:Business aircraft 404:, an engineer at 385:Early development 179:Hoerner wing tips 119:. This increases 96:lift-induced drag 16:(Redirected from 3803: 3750:Navigation light 3730:Hydraulic system 3705:Bleed air system 3633:Drogue parachute 3307:Vortex generator 2925:Interplane strut 2832: 2825: 2818: 2809: 2808: 2804: 2798: 2789: 2783: 2773: 2767: 2758: 2755:Aerospaceweb.org 2745: 2737: 2725: 2712: 2691: 2690: 2682: 2676: 2675: 2674:. EarthTechling. 2667: 2661: 2660: 2654: 2652: 2647:on July 21, 2009 2632: 2626: 2625: 2619: 2611: 2592: 2583: 2582: 2581: 2577: 2570: 2564: 2563: 2561: 2559: 2544: 2538: 2537: 2535: 2533: 2518: 2512: 2511: 2510: 2506: 2499: 2490: 2489: 2487: 2485: 2470: 2459: 2458: 2451: 2445: 2444: 2440:Soaring Magazine 2436: 2432:"About Winglets" 2428:Mark D. Maughmer 2424: 2418: 2417: 2410: 2404: 2403: 2385: 2376: 2370: 2369: 2363: 2355: 2343: 2337: 2336: 2324: 2318: 2317: 2310: 2304: 2303: 2292: 2286: 2285: 2283: 2281: 2276:on March 7, 2017 2275: 2264: 2255: 2249: 2248: 2246: 2244: 2235: 2226: 2220: 2219: 2207: 2201: 2200: 2198: 2196: 2187:. Archived from 2177: 2171: 2170: 2168: 2166: 2151: 2142: 2141: 2126: 2120: 2119: 2112: 2106: 2105: 2103: 2101: 2086: 2080: 2079: 2068: 2062: 2061: 2053: 2045: 2039: 2038: 2036: 2034: 2019: 2013: 2012: 2006: 1998: 1987: 1981: 1980: 1978: 1976: 1962: 1956: 1955: 1948: 1942: 1941: 1930: 1924: 1923: 1922: 1918: 1911: 1905: 1904: 1890: 1884: 1883: 1865: 1859: 1858: 1856: 1854: 1848: 1841: 1833: 1827: 1826: 1820: 1811: 1805: 1804: 1786: 1780: 1779: 1773: 1765: 1759: 1751: 1745: 1744: 1742: 1731: 1725: 1724: 1722: 1720: 1714: 1703: 1692: 1681: 1680: 1678: 1676: 1658: 1652: 1651: 1639: 1633: 1632: 1630: 1619: 1610: 1601: 1600: 1598: 1596: 1586: 1577: 1571: 1570: 1569: 1565: 1558: 1552: 1551: 1548:"2010 Inductees" 1544: 1538: 1537: 1517: 1508: 1495: 1494: 1488: 1484: 1482: 1474: 1454: 1448: 1447: 1441: 1433: 1427: 1418: 1311: 1299: 1280: 1261: 1234:helicopter rotor 1022:Mark D. Maughmer 943:C-390 Millennium 902:The short-range 869:wingtip vortices 797:fuel consumption 793:Hapag-Lloyd Flug 776: 765:Boeing 767-400ER 761: 746: 731: 690:Blended winglets 340:lift coefficient 170:Vincent Burnelli 113:wingtip vortices 64:wingtip vortices 62:Line drawing of 21: 3811: 3810: 3806: 3805: 3804: 3802: 3801: 3800: 3771: 3770: 3769: 3764: 3760:Ram air turbine 3725:Flight recorder 3683: 3662: 3595: 3576:Thrust reversal 3500: 3491: 3462:Radar altimeter 3427:Head-up display 3337: 3326: 3222:Anti-shock body 3204: 3192: 3053:Artificial feel 3035:Flight controls 3029: 2895:Fabric covering 2845: 2841:components and 2836: 2796: 2792: 2781: 2765: 2761: 2740: 2728: 2700: 2695: 2694: 2683: 2679: 2668: 2664: 2650: 2648: 2633: 2629: 2613: 2612: 2594: 2593: 2586: 2579: 2571: 2567: 2557: 2555: 2545: 2541: 2531: 2529: 2519: 2515: 2508: 2500: 2493: 2483: 2481: 2471: 2462: 2453: 2452: 2448: 2434: 2425: 2421: 2412: 2411: 2407: 2383: 2377: 2373: 2357: 2356: 2344: 2340: 2325: 2321: 2312: 2311: 2307: 2294: 2293: 2289: 2279: 2277: 2273: 2262: 2256: 2252: 2242: 2240: 2233: 2227: 2223: 2208: 2204: 2194: 2192: 2179: 2178: 2174: 2164: 2162: 2160:CompositesWorld 2152: 2145: 2128: 2127: 2123: 2114: 2113: 2109: 2099: 2097: 2088: 2087: 2083: 2072:"Industry Wrap" 2070: 2069: 2065: 2046: 2042: 2032: 2030: 2021: 2020: 2016: 2000: 1999: 1989: 1988: 1984: 1974: 1972: 1964: 1963: 1959: 1950: 1949: 1945: 1932: 1931: 1927: 1920: 1914: 1912: 1908: 1900:Washington Post 1891: 1887: 1880: 1866: 1862: 1852: 1850: 1846: 1839: 1835: 1834: 1830: 1818: 1812: 1808: 1801: 1787: 1783: 1767: 1766: 1757: 1753: 1752: 1748: 1740: 1732: 1728: 1718: 1716: 1712: 1701: 1693: 1684: 1674: 1672: 1659: 1655: 1646:. Met-Co-Aire. 1640: 1636: 1628: 1617: 1611: 1604: 1594: 1592: 1584: 1578: 1574: 1567: 1559: 1555: 1546: 1545: 1541: 1534: 1515: 1509: 1498: 1486: 1485: 1476: 1475: 1471: 1455: 1451: 1435: 1434: 1425: 1419: 1406: 1401: 1376: 1366:have increased 1349: 1322: 1315: 1312: 1303: 1300: 1291: 1290:with raked tips 1281: 1272: 1267:Merlin showing 1262: 1226: 1206: 1164: 1097: 1008:winch-launching 994: 978:United Airlines 951: 890:results in the 861:fuel efficiency 849: 830: 783: 780:Airbus A310-300 777: 768: 762: 753: 747: 738: 732: 692: 642: 640:Canted winglets 602:Airbus A310-300 597: 588: 576: 556:Wichita, Kansas 481: 462: 457: 426:Lockheed L-1011 414:1973 oil crisis 387: 344:angle of attack 245: 194:wingtip devices 188:Heinkel He 162A 181: 146: 144:Wing end-plates 141: 121:fuel efficiency 71:Wingtip devices 42: 35: 28: 23: 22: 15: 12: 11: 5: 3809: 3799: 3798: 3793: 3788: 3783: 3766: 3765: 3763: 3762: 3757: 3752: 3747: 3745:Landing lights 3742: 3737: 3732: 3727: 3722: 3717: 3712: 3707: 3702: 3697: 3691: 3689: 3685: 3684: 3682: 3681: 3676: 3670: 3668: 3667:Escape systems 3664: 3663: 3661: 3660: 3655: 3650: 3645: 3640: 3635: 3630: 3625: 3620: 3615: 3609: 3607: 3605:arresting gear 3597: 3596: 3594: 3593: 3588: 3583: 3578: 3573: 3568: 3563: 3561:Splitter plate 3558: 3553: 3548: 3543: 3538: 3533: 3528: 3523: 3518: 3513: 3507: 3505: 3493: 3492: 3490: 3489: 3484: 3479: 3474: 3469: 3464: 3459: 3454: 3449: 3444: 3439: 3434: 3429: 3424: 3419: 3414: 3409: 3404: 3399: 3394: 3389: 3384: 3379: 3374: 3369: 3364: 3359: 3354: 3349: 3343: 3341: 3328: 3327: 3325: 3324: 3319: 3314: 3309: 3304: 3299: 3294: 3289: 3284: 3279: 3274: 3269: 3264: 3259: 3254: 3249: 3244: 3239: 3234: 3229: 3224: 3219: 3214: 3208: 3206: 3194: 3193: 3191: 3190: 3185: 3180: 3175: 3170: 3165: 3160: 3155: 3150: 3145: 3140: 3135: 3130: 3125: 3120: 3115: 3110: 3105: 3100: 3095: 3090: 3085: 3080: 3075: 3070: 3065: 3060: 3055: 3050: 3045: 3039: 3037: 3031: 3030: 3028: 3027: 3022: 3017: 3012: 3007: 3002: 2997: 2992: 2987: 2982: 2977: 2972: 2967: 2962: 2957: 2952: 2947: 2942: 2937: 2932: 2927: 2922: 2917: 2912: 2907: 2902: 2897: 2892: 2887: 2882: 2880:Cruciform tail 2877: 2875:Crack arrestor 2872: 2867: 2862: 2856: 2854: 2847: 2846: 2835: 2834: 2827: 2820: 2812: 2806: 2805: 2790: 2774: 2759: 2746: 2738: 2726: 2713: 2699: 2698:External links 2696: 2693: 2692: 2677: 2662: 2627: 2584: 2565: 2539: 2513: 2491: 2460: 2446: 2419: 2405: 2371: 2338: 2319: 2305: 2287: 2250: 2238:Google Patents 2221: 2218:. Smithsonian. 2202: 2172: 2143: 2121: 2107: 2081: 2063: 2040: 2014: 1982: 1957: 1943: 1925: 1906: 1885: 1879:978-1119967514 1878: 1860: 1828: 1823:Aero quarterly 1806: 1799: 1781: 1746: 1726: 1682: 1653: 1634: 1602: 1572: 1553: 1539: 1532: 1526:. p. 35. 1496: 1469: 1449: 1403: 1402: 1400: 1397: 1375: 1372: 1348: 1345: 1321: 1318: 1317: 1316: 1313: 1306: 1304: 1301: 1294: 1292: 1282: 1275: 1273: 1263: 1256: 1225: 1222: 1210:XB-70 Valkyrie 1205: 1202: 1163: 1160: 1112:closed-surface 1096: 1093: 1054:Masak Scimitar 993: 990: 985:Boeing 737 MAX 950: 947: 937:. The Embraer 873:bending moment 848: 845: 828: 789:Boeing 737-800 785: 784: 778: 771: 769: 763: 756: 754: 748: 741: 739: 737:canted winglet 735:Boeing 747-400 733: 726: 700:boundary layer 691: 688: 678:was the first 676:Tupolev Tu-204 660:Ilyushin Il-96 641: 638: 634:Antonov An-148 596: 593: 587: 584: 575: 572: 532:Gulfstream III 480: 477: 461: 458: 456: 453: 386: 383: 371:raked wingtips 359:Boeing 747-400 274:model winglet 255:with attached 244: 241: 233:dihedral angle 217:Heinkel He 162 192:Lippisch-Ohren 180: 177: 145: 142: 140: 137: 133:U.S. Air Force 100:parasitic drag 54:wingtip device 32:Toyota Winglet 26: 9: 6: 4: 3: 2: 3808: 3797: 3794: 3792: 3789: 3787: 3784: 3782: 3779: 3778: 3776: 3761: 3758: 3756: 3753: 3751: 3748: 3746: 3743: 3741: 3738: 3736: 3733: 3731: 3728: 3726: 3723: 3721: 3718: 3716: 3713: 3711: 3708: 3706: 3703: 3701: 3698: 3696: 3693: 3692: 3690: 3688:Other systems 3686: 3680: 3677: 3675: 3674:Ejection seat 3672: 3671: 3669: 3665: 3659: 3656: 3654: 3651: 3649: 3646: 3644: 3641: 3639: 3636: 3634: 3631: 3629: 3626: 3624: 3621: 3619: 3618:Arrestor hook 3616: 3614: 3613:Aircraft tire 3611: 3610: 3608: 3606: 3602: 3598: 3592: 3589: 3587: 3584: 3582: 3579: 3577: 3574: 3572: 3569: 3567: 3564: 3562: 3559: 3557: 3554: 3552: 3549: 3547: 3544: 3542: 3539: 3537: 3534: 3532: 3529: 3527: 3524: 3522: 3519: 3517: 3514: 3512: 3509: 3508: 3506: 3504: 3498: 3494: 3488: 3485: 3483: 3480: 3478: 3475: 3473: 3470: 3468: 3465: 3463: 3460: 3458: 3455: 3453: 3450: 3448: 3445: 3443: 3440: 3438: 3435: 3433: 3430: 3428: 3425: 3423: 3420: 3418: 3417:Glass cockpit 3415: 3413: 3410: 3408: 3405: 3403: 3400: 3398: 3395: 3393: 3390: 3388: 3385: 3383: 3380: 3378: 3375: 3373: 3370: 3368: 3365: 3363: 3360: 3358: 3355: 3353: 3352:Air data boom 3350: 3348: 3345: 3344: 3342: 3339: 3333: 3329: 3323: 3320: 3318: 3315: 3313: 3310: 3308: 3305: 3303: 3300: 3298: 3295: 3293: 3290: 3288: 3285: 3283: 3280: 3278: 3275: 3273: 3270: 3268: 3265: 3263: 3260: 3258: 3255: 3253: 3250: 3248: 3245: 3243: 3240: 3238: 3235: 3233: 3230: 3228: 3225: 3223: 3220: 3218: 3215: 3213: 3210: 3209: 3207: 3203: 3199: 3195: 3189: 3186: 3184: 3181: 3179: 3176: 3174: 3171: 3169: 3166: 3164: 3161: 3159: 3156: 3154: 3151: 3149: 3146: 3144: 3141: 3139: 3136: 3134: 3133:Rudder pedals 3131: 3129: 3126: 3124: 3121: 3119: 3116: 3114: 3111: 3109: 3106: 3104: 3101: 3099: 3096: 3094: 3091: 3089: 3086: 3084: 3081: 3079: 3076: 3074: 3071: 3069: 3066: 3064: 3061: 3059: 3056: 3054: 3051: 3049: 3046: 3044: 3041: 3040: 3038: 3036: 3032: 3026: 3023: 3021: 3018: 3016: 3013: 3011: 3008: 3006: 3003: 3001: 2998: 2996: 2993: 2991: 2990:Trailing edge 2988: 2986: 2983: 2981: 2978: 2976: 2973: 2971: 2970:Stressed skin 2968: 2966: 2963: 2961: 2958: 2956: 2953: 2951: 2948: 2946: 2943: 2941: 2938: 2936: 2933: 2931: 2928: 2926: 2923: 2921: 2918: 2916: 2913: 2911: 2908: 2906: 2903: 2901: 2898: 2896: 2893: 2891: 2888: 2886: 2883: 2881: 2878: 2876: 2873: 2871: 2868: 2866: 2863: 2861: 2858: 2857: 2855: 2852: 2848: 2844: 2840: 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MacroAir. 2388:Free Flight 2333:NYCAviation 2296:"737-800-3" 2243:December 6, 2100:November 1, 2033:February 5, 1755:"Chapter 2" 1719:November 1, 1487:|work= 1127:free-flight 1018:Peter Masak 935:Boeing 777X 859:to improve 825:A320 family 805:737 Classic 750:Airbus A320 720:Falcon 2000 684:Airbus A220 393:Winglet of 355:Airbus A340 251:Winglet on 52:Airbus A350 3775:Categories 3648:Oleo strut 3536:Inlet cone 3531:Gascolator 3497:Propulsion 3487:Yaw string 3482:Variometer 3338:instrument 3317:Wing fence 3252:Gouge flap 3227:Blown flap 3183:Yaw damper 3158:Stabilator 3143:Side-stick 3078:Dive brake 2965:Stabilizer 2940:Lift strut 2930:Jury strut 2609:scratches. 2574:EP 1531126 2280:January 6, 1916:US 4595160 1853:January 6, 1562:US 1774474 1533:1493656783 1513:"Winglets" 1399:References 1393:Ben Lexcen 1269:BERP rotor 1218:waveriding 1050:Open Class 927:Boeing 787 919:Boeing 777 915:Boeing 767 853:wing sweep 716:Hawker 800 680:narrowbody 612:, and the 568:Citation X 522:Learjet 40 506:Learjet 55 497:Learjet 28 466:Boeing 747 381:distance. 363:Boeing 777 229:dutch roll 39:wing fence 3623:Autobrake 3551:NACA duct 3526:Fuel tank 3516:Drop tank 3499:controls, 3382:Astrodome 3372:Altimeter 3237:Dog-tooth 3202:high-lift 3153:Spoileron 3138:Servo tab 3118:Gust lock 3073:Deceleron 3058:Autopilot 3015:Wing root 3000:Twin tail 2985:Tailplane 2920:Hardpoint 2890:Empennage 2853:structure 2788:. 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Index

Winglets
Toyota Winglet
wing fence

Airbus A350

wingtip vortices
fixed-wing aircraft
drag
wing tip
aspect ratio
wingspan
lift-induced drag
parasitic drag
airport gates
wingtip vortices
lift-to-drag ratio
fuel efficiency
gliders
range
U.S. Air Force

Ha 137
Frederick W. Lanchester
William E. Somerville
Vincent Burnelli

Heinkel He 162A
Sighard F. Hoerner
Messerschmitt Me 163

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