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- Clark_Y abstract "Clark Y is the name of a particular aerofoil profile, widely used in general purpose aircraft designs, and much studied in aerodynamics over the years. The profile was designed in 1922 by Virginius E. Clark. The airfoil has a thickness of 11.7 percent and is flat on the lower surface from 30 percent of chord back. The flat bottom simplifies angle measurements on propellers, and makes for easy construction of wings on a flat surface.The Lockheed Vega is one example of the Clark Y used in practice. For many applications the Clark Y has been adequate; it gives reasonable overall performance in respect of its lift-to-drag ratio, and has gentle and relatively benign stall characteristics. But the flat lower surface is sub-optimal from an aerodynamic perspective, and it is rarely used in new designs. The Spirit of St. Louis used the Clark Y; the Piper Cub used the quite similar USA 35B.The Northrop Tacit Blue stealth technology demonstrator aircraft also used the Clark-Y. The Clark-Y was chosen for this application, as its flat bottom worked well with the design goal of a low radar cross-section.The Clark YH airfoil is the similar but with a reflexed (turned up) trailing edge producing a more positive pitching moment reducing the horizontal tail load required to trim an aircraft. The Hawker Hurricane, Curtiss F9C Sparrowhawk and Nanchang CJ-6 used this profile. Мany Soviet aircraft of the 1930s and 1940s including all of the World War II Yakovlev fighters and MiG-3 used the Clark YH airfoil.".
- Clark_Y thumbnail Clark_YH.JPG?width=300.
- Clark_Y wikiPageID "310378".
- Clark_Y wikiPageLength "4679".
- Clark_Y wikiPageOutDegree "49".
- Clark_Y wikiPageRevisionID "668443668".
- Clark_Y wikiPageWikiLink Ace_Baby_Ace.
- Clark_Y wikiPageWikiLink Aerodynamics.
- Clark_Y wikiPageWikiLink Aeronca_50_Chief.
- Clark_Y wikiPageWikiLink Aircraft.
- Clark_Y wikiPageWikiLink Airfoil.
- Clark_Y wikiPageWikiLink Avia_B.122.
- Clark_Y wikiPageWikiLink Blue_Yonder_Merlin.
- Clark_Y wikiPageWikiLink Category:Aerodynamics.
- Clark_Y wikiPageWikiLink Category:Aircraft_wing_design.
- Clark_Y wikiPageWikiLink Chord_(aeronautics).
- Clark_Y wikiPageWikiLink Currie_Wot.
- Clark_Y wikiPageWikiLink Curtiss_F9C_Sparrowhawk.
- Clark_Y wikiPageWikiLink Curtiss_P-6_Hawk.
- Clark_Y wikiPageWikiLink File:Clark_y.JPG.
- Clark_Y wikiPageWikiLink Fleet_Fawn.
- Clark_Y wikiPageWikiLink Hatz_Classic.
- Clark_Y wikiPageWikiLink Hawker_Hurricane.
- Clark_Y wikiPageWikiLink Heath_Parasol.
- Clark_Y wikiPageWikiLink Ilyushin_Il-2.
- Clark_Y wikiPageWikiLink Lift-to-drag_ratio.
- Clark_Y wikiPageWikiLink Lockheed_Vega.
- Clark_Y wikiPageWikiLink Long_Henderson_Longster.
- Clark_Y wikiPageWikiLink Mikoyan-Gurevich_MiG-3.
- Clark_Y wikiPageWikiLink Miles_Magister.
- Clark_Y wikiPageWikiLink Monocoupe_90.
- Clark_Y wikiPageWikiLink Nanchang_CJ-6.
- Clark_Y wikiPageWikiLink Northrop_Tacit_Blue.
- Clark_Y wikiPageWikiLink Piper_J-3_Cub.
- Clark_Y wikiPageWikiLink Pitching_moment.
- Clark_Y wikiPageWikiLink Polikarpov_I-153.
- Clark_Y wikiPageWikiLink Polikarpov_R-5.
- Clark_Y wikiPageWikiLink Reynolds_number.
- Clark_Y wikiPageWikiLink Soviet_Union.
- Clark_Y wikiPageWikiLink Spirit_of_St._Louis.
- Clark_Y wikiPageWikiLink Stall_(fluid_mechanics).
- Clark_Y wikiPageWikiLink Stinson_Reliant.
- Clark_Y wikiPageWikiLink Stolp_SA-900_V-Star.
- Clark_Y wikiPageWikiLink Trailing_edge.
- Clark_Y wikiPageWikiLink Virginius_E._Clark.
- Clark_Y wikiPageWikiLink Waco_F_series.
- Clark_Y wikiPageWikiLink World_War_II.
- Clark_Y wikiPageWikiLink Yakovlev.
- Clark_Y wikiPageWikiLink Yakovlev_Yak-18T.
- Clark_Y wikiPageWikiLink File:Clark_YH.JPG.
- Clark_Y wikiPageWikiLinkText "'''CLARK Y'''".
- Clark_Y wikiPageWikiLinkText "Clark Y".
- Clark_Y wikiPageWikiLinkText "Clark Y-H".
- Clark_Y wikiPageWikiLinkText "Clark YH".
- Clark_Y wikiPageUsesTemplate Template:Col-begin.
- Clark_Y wikiPageUsesTemplate Template:Col-break.
- Clark_Y wikiPageUsesTemplate Template:Col-end.
- Clark_Y wikiPageUsesTemplate Template:Reflist.
- Clark_Y subject Category:Aerodynamics.
- Clark_Y subject Category:Aircraft_wing_design.
- Clark_Y hypernym Profile.
- Clark_Y type Film.
- Clark_Y type Dynamic.
- Clark_Y comment "Clark Y is the name of a particular aerofoil profile, widely used in general purpose aircraft designs, and much studied in aerodynamics over the years. The profile was designed in 1922 by Virginius E. Clark. The airfoil has a thickness of 11.7 percent and is flat on the lower surface from 30 percent of chord back.".
- Clark_Y label "Clark Y".
- Clark_Y sameAs Q5127432.
- Clark_Y sameAs クラーク_Y.
- Clark_Y sameAs m.01t32b.
- Clark_Y sameAs Q5127432.
- Clark_Y sameAs 克拉克Y翼.
- Clark_Y wasDerivedFrom Clark_Y?oldid=668443668.
- Clark_Y depiction Clark_YH.JPG.
- Clark_Y isPrimaryTopicOf Clark_Y.