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- Elliptical_wing abstract "Not to be confused with annular wings, which may be elliptically shapedAn elliptical wing is a wing planform that theoretically minimizes induced drag. Elliptical taper shortens the chord near the wingtips in such a way that all parts of the wing experience equivalent downwash, and lift at the wing tips is essentially zero, improving aerodynamic efficiency due to a greater Oswald efficiency number in the induced drag equation.The elliptical wing was first used on aircraft in the 1920s, [see Bäumer B II "Sausewind" of 1925] but has only seen limited use, for a number of reasons: the compound curves involved are difficult and costly to manufacture, the superiority of the pure elliptical shape is only theoretical. A truncated ellipse of the same span and area, has, for all practical purposes, the same induced drag. A tapered wing with 0.4 or 0.5 taper ratio also has similar induced drag. the wing's uniform lift distribution causes the entire span of the wing to stall simultaneously, potentially causing loss of control with little warning. To compensate, aircraft such as the Supermarine Spitfire used a modified elliptical wing with washout towards the tips, though such compromises increase induced drag and reduce a wing’s efficiency. Note, though, that the typical tapered wing has to employ more washout than the elliptical wing to see similar stall performance, which puts the tapered wing at a disadvantage.Few aircraft have used elliptical wings, and even fewer have seen mass production, most in the 1950s and 60s. The British Supermarine Schneider Trophy racers of the early and mid-1920s were some of the most successful designs, and were the predecessors to the later Spitfire fighters. The German Heinkel He 70 "Blitz" of the early 1930s was a fast mail plane and reconnaissance bomber, and the predecessor to the Heinkel He 111 bomber, early models of which used an elliptical wing. Almost all of the United States Republic P-47 Thunderbolts used elliptical wings, except the last models, which used squared-off wingtips. The late-war Hawker Tempest fighter-bomber had a wing which was very close to being elliptic, similar in shape to the P-47 but with slightly more blunted wingtips. In addition, several contemporary aircraft used a more conventional wing with elliptical wingtips in an attempt to gain some benefits without the added cost, but the aerodynamic benefit was found to be minimal. The Imperial Japanese Navy used an elliptical wing very similar to that of the He 70 on their Aichi D3A dive bomber, and the external wing outline of the excellent 1930's era Mitsubishi A5M carrier fighter was almost identical to that of the Spitfire, in spite of being brought into service well before the Spitfire was.The British Aircraft company Swift Aircraft are currently developing a two-seater Very Light Aircraft, Light-sport aircraft and CS-23 category Aircraft, the Swift Aircraft Swift, featuring elliptical wings.".
- Elliptical_wing thumbnail Spitfire.planform.arp.jpg?width=300.
- Elliptical_wing wikiPageID "3496875".
- Elliptical_wing wikiPageLength "4130".
- Elliptical_wing wikiPageOutDegree "34".
- Elliptical_wing wikiPageRevisionID "682882247".
- Elliptical_wing wikiPageWikiLink Aerodynamics.
- Elliptical_wing wikiPageWikiLink Aichi_D3A.
- Elliptical_wing wikiPageWikiLink Aircraft.
- Elliptical_wing wikiPageWikiLink Annular_wings.
- Elliptical_wing wikiPageWikiLink Bomber.
- Elliptical_wing wikiPageWikiLink British_people.
- Elliptical_wing wikiPageWikiLink CS-23.
- Elliptical_wing wikiPageWikiLink Category:Aerodynamics.
- Elliptical_wing wikiPageWikiLink Category:Aircraft_wing_design.
- Elliptical_wing wikiPageWikiLink Chord_(aeronautics).
- Elliptical_wing wikiPageWikiLink Chord_(aircraft).
- Elliptical_wing wikiPageWikiLink Closed_wing.
- Elliptical_wing wikiPageWikiLink EASA_CS-VLA.
- Elliptical_wing wikiPageWikiLink File:Spitfire.planform.arp.jpg.
- Elliptical_wing wikiPageWikiLink Heinkel_He_111.
- Elliptical_wing wikiPageWikiLink Heinkel_He_70.
- Elliptical_wing wikiPageWikiLink Imperial_Japanese_Navy_Air_Service.
- Elliptical_wing wikiPageWikiLink Induced_drag.
- Elliptical_wing wikiPageWikiLink Lift-induced_drag.
- Elliptical_wing wikiPageWikiLink Lift_(force).
- Elliptical_wing wikiPageWikiLink Light-sport_aircraft.
- Elliptical_wing wikiPageWikiLink Mail_plane.
- Elliptical_wing wikiPageWikiLink Mass_production.
- Elliptical_wing wikiPageWikiLink Mitsubishi_A5M.
- Elliptical_wing wikiPageWikiLink Nazi_Germany.
- Elliptical_wing wikiPageWikiLink Oswald_efficiency_number.
- Elliptical_wing wikiPageWikiLink P-47_Thunderbolt.
- Elliptical_wing wikiPageWikiLink Planform_(aeronautics).
- Elliptical_wing wikiPageWikiLink Reconnaissance.
- Elliptical_wing wikiPageWikiLink Republic_P-47_Thunderbolt.
- Elliptical_wing wikiPageWikiLink Schneider_Trophy.
- Elliptical_wing wikiPageWikiLink Stall_(flight).
- Elliptical_wing wikiPageWikiLink Stall_(fluid_mechanics).
- Elliptical_wing wikiPageWikiLink Supermarine.
- Elliptical_wing wikiPageWikiLink Supermarine_Spitfire.
- Elliptical_wing wikiPageWikiLink Swift_Aircraft_Swift.
- Elliptical_wing wikiPageWikiLink United_States.
- Elliptical_wing wikiPageWikiLink Very_Light_Aircraft.
- Elliptical_wing wikiPageWikiLink Washout_(aeronautics).
- Elliptical_wing wikiPageWikiLink Washout_(aviation).
- Elliptical_wing wikiPageWikiLink Wing_configuration.
- Elliptical_wing wikiPageWikiLinkText "Elliptical wing".
- Elliptical_wing wikiPageWikiLinkText "Elliptical".
- Elliptical_wing wikiPageWikiLinkText "elliptical lift distribution".
- Elliptical_wing wikiPageWikiLinkText "elliptical planform".
- Elliptical_wing wikiPageWikiLinkText "elliptical wing".
- Elliptical_wing wikiPageWikiLinkText "elliptical wingtips".
- Elliptical_wing wikiPageWikiLinkText "elliptical".
- Elliptical_wing wikiPageWikiLinkText "elliptically".
- Elliptical_wing hasPhotoCollection Elliptical_wing.
- Elliptical_wing wikiPageUsesTemplate Template:Fact.
- Elliptical_wing subject Category:Aerodynamics.
- Elliptical_wing subject Category:Aircraft_wing_design.
- Elliptical_wing hypernym Planform.
- Elliptical_wing type Component.
- Elliptical_wing type Dynamic.
- Elliptical_wing comment "Not to be confused with annular wings, which may be elliptically shapedAn elliptical wing is a wing planform that theoretically minimizes induced drag.".
- Elliptical_wing label "Elliptical wing".
- Elliptical_wing sameAs Ala_el·líptica.
- Elliptical_wing sameAs Ala_elíptica.
- Elliptical_wing sameAs Aile_elliptique.
- Elliptical_wing sameAs Ala_ellittica.
- Elliptical_wing sameAs m.09gp_m.
- Elliptical_wing sameAs Q2421701.
- Elliptical_wing sameAs Q2421701.
- Elliptical_wing wasDerivedFrom Elliptical_wing?oldid=682882247.
- Elliptical_wing depiction Spitfire.planform.arp.jpg.
- Elliptical_wing isPrimaryTopicOf Elliptical_wing.