Other

Massachusetts Institute of Technology

Christopher Charles Williams

Hugh Miller Herr

Douglas James Dietrich

Matthew Eli Carney

Stephen Wayne Fiebiger

Jeff Tessier

Megan Burke

Roy E Struble

Lonnie Adolphus Houck, Iii

Matthew Lawrence Handford

Daniel Visan Levine

An ankle-foot prosthesis comprises a foot structure having a foot keel leaf spring, a heel leaf spring, and an upper J leaf spring above the keel leaf spring. An ankle bearing block is mounted to the keel leaf spring and a shank shell is mounted to the ankle bearing block. A shank interface mounts to the shank shell. A processor controlled active element extends along an axis between the shank shell and the upper leaf-spring.

Computer-controlled ankle-foot prosthesis with series J-spring actuation

A turbine blade, airfoil, and rotor stage for a gas turbine engine is disclosed. The turbine blade, airfoil, and rotor stage each includes an uncoated airfoil profile in accordance with Cartesian coordinate values of X, Y, and Z disclosed herein. The resulting airfoil exhibits high flutter margins, thus enabling the gas turbine engine to be operated at an increased power output while avoiding operational limitations required in known gas turbine engines.

Turbine blade having improved flutter capability and increased turbine stage output

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Pittsburgh, PA, United States of America

Christopher Charles Williams