The flexible wing has a main supporting surface (1) of flexible material with a curved profile and with the effect of increased air pressure from resistance surfaces (2) located at the back and under the drain. Changing the flow direction locally causes the projectile to be ejected and the outflow drain by the cable (3) without bending and tilting the leading edge (8). The flexible wing is compressible, detachable or retractable into the eccentric rings after removal of the beam (6).
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