The glider wing comprises a membrane stretched, by means of flexible spars and rigid profiled spreaders at the tips, to produce a permanently curved contour in the direction of the in flight airflow and to curve the wing surface along the span in the opposite sense to improve stability. Each spar's plane may be other than perpendicular to the airflow, giving sweep-back in plan, this may be maintained by after-spar-tip to fuselage bracing wires. Alternatively, mirror-image half-wings can connect rigidly with a central longitudinal frame, also profiled, for a (conventional) V-wing.
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