Control of aerodynamic forces by variable wetted surface morphology
Systems and methods for providing dynamic control to a vehicle in a dynamic fluid. The systems and methods of the invention relate to one or more morphable surfaces that can be controlled by a controller and an actuator in an active manner to provide asperities that interact with a fluid moving across the morphable surfaces. By controlling the size, shape and location of the asperities, one can exert control authority over the motion of the vehicle relative to the fluid, including a speed, a direction and an attitude of the vehicle. Examples of materials that provide suitable morphable surfaces include ionic polymer metal composites and shape memory polymers, both of which types of material are commercially available. Useful morphable surface systems have been examined and are described.
Publication number US8276851B2. Publication type Grant. Publication date October 2, 2012 . Application number US 12/117,959. Filing date May 9, 2008. Priority date May 10, 2007. Government Interests: STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT. This invention was made with government support under Grant No. FA9550-08-1-0049 awarded by the Air Force (AFOSR). The government has certain rights in the invention. Parent Case Text: CROSS-REFERENCE TO RELATED APPLICATIONS. This application claims priority to and the benefit of co-pending U.S. provisional patent application Ser. No. 60/928,737, filed May 10, 2007, which application is incorporated herein by reference in its entirety. This application is related to co-pending U.S. patent application Ser. No. 12/106,638, filed Apr. 21, 2008, which application is incorporated herein by reference in its entirety.
Published - US20090001222.pdf
Published - US8276851B2.pdf