초록 ▼

A novel set of serrated-planform lifting surfaces produce unexpectedly high lift coefficients at moderate to high angles-of-attack. Each serration, or tooth, is designed to shed a vortex. The interaction of the vortices greatly enhances the lifting capability over an extremely large operating range.

A novel set of serrated-planform lifting surfaces produce unexpectedly high lift coefficients at moderate to high angles-of-attack. Each serration, or tooth, is designed to shed a vortex. The interaction of the vortices greatly enhances the lifting capability over an extremely large operating range. Variations of the invention use serrated-planform lifting surfaces in planes different than that of a primary lifting surface. In an alternate embodiment, the individual teeth are controllably retractable and deployable to provide for active control of the vortex system and hence lift coefficient. Differential lift on multiple serrated-planform lifting surfaces provides an means for vehicle control. The important aerodynamic advantages of the serrated-planform lifting surfaces are not limited to aircraft applications but can be used to establish desirable performance characteristics for missiles, land vehicles, and/or watercraft.

대표청구항

[ We claim:] [1.] An aerodynamic lifting device disposed upstream of a primary lifting surface; said aerodynamic lifting device comprising a plurality of teeth arranged essentially in tandem, each of said teeth being individually disposed in a plane that intersects said primary lifting surface.

[ We claim:] [1.] An aerodynamic lifting device disposed upstream of a primary lifting surface; said aerodynamic lifting device comprising a plurality of teeth arranged essentially in tandem, each of said teeth being individually disposed in a plane that intersects said primary lifting surface.