HIGH-SPEED WING Russian patent published in 2007 - IPC B64C3/10 

FIELD: aviation.

SUBSTANCE: proposed high-speed swept wing consists of center-wing section and outer-wing panel. Wing is formed as single spatial system on base of non-planar middle surface having S-shaped profile of center lines at negative concavity in tail sections at X>0.7-0.8 and positive concavity f=0.015-0.02 at X> 0-0.7. At change from side sections in span, negative concavity disappears gradually and positions of maximum positive concavity smoothly shift backward by chord from magnitude X=0.3 at side to magnitude X=0.5 in end sections. Aspect ratio of wing λ=9-11, taper ratio η=3.5-4.2 and leading-edge sweep angle is up to X_l.ed.=35^o. Upper generatrices of profiles are so made that at rated conditions, maximum rarefaction does not exceed permissible limits C_max.perm.. Thickness ratio of profiles is formed according to two laws: from leading edge up to X=0.3, at range of C=0-8% and from X=0.3 to the trailing edge at range C=0-17%; maximum thicknesses of profiles are found at X=0.56-0.66.

EFFECT: increased flying speed.

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