Fin-based diver propulsion vehicle

Abstract

A craft comprises a torque reaction engine, a beam, and a fin secured to the beam. The torque reaction engine causes the beam to oscillate. The fin, secured to the beam, translates through a surrounding thrust fluid as a result of oscillation of the beam. Translation of the fin through the surrounding thrust fluid produces thrust and/or lift on the fin, propelling the beam and torque reaction engine. The craft may further comprise a harness and be a diver propulsion vehicle.

Dependencies are inferred from the claim text.