The U large wing is a new proposed shape of the glider airplane model wing. Its stability is compared to V wing. U large wing I/II has increased stability as the tilting angle increases, less than for V wing I/II. Its strong instability is at β = 90o, when the wing is in vertical position. Its stability range is larger than for V wing. The V wing has the stability range limited by α, being 90o – α., where α is the angle between wings and horizontal line, in normal flight. β is the tilting angle for the wing. It can be trigonometric or anti trigonometric rotation, seen from the tale.

Key words: U large wing, V wing, coefficient of restauration

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