FIELD: aviation.
SUBSTANCE: proposed aerodynamic lifting surface has both sides which are wavy in span in form of humps and cavities. Parameters of waviness: waviness period h=5-30% of chord, relative doubled amplitude f=1-5% of chord, length of wavy surface section along chord g=15-85% beginning with front edge; the remaining surface is smooth. Humps and cavities on both sides of lifting surface relative to profile chord coincide in phase.
EFFECT: improved aerodynamic efficiency.
4 cl, 3 dwg
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