Abstract: Methods and apparatus to adjust hydrodynamic designs of a hydrokinetic turbine are disclosed herein. An example method of generating hydrodynamic power via a hydrokinetic turbine includes identifying a first characteristic of a first location in a body of water where the turbine is to be installed and determining, based on the first characteristic of the first location, a geometry of a first turbine component of the turbine. The example method includes removably coupling the first turbine component to a frame of the turbine. The example method includes positioning the turbine including the first turbine component at the first location.

Abstract: Methods and apparatus to adjust hydrodynamic designs of a hydrokinetic turbine are disclosed herein. An example method of generating hydrodynamic power via a hydrokinetic turbine includes identifying a first characteristic of a first location in a body of water where the turbine is to be installed and determining, based on the first characteristic of the first location, a geometry of a first turbine component of the turbine. The example method includes removably coupling the first turbine component to a frame of the turbine. The example method includes positioning the turbine including the first turbine component at the first location.

Abstract: A control surface system for a marine vehicle is provided. The control surface system includes a control member having at least two control portions fixedly connected at a predetermined spacing from each other. The control portions each have opposed surfaces, with the control portions being rotatable about an axis.

Abstract: An integrated propulsion and guidance system for a vehicle includes an engine coupled to an impeller via a driveshaft to produce propulsive force. The impeller includes a hub and a plurality of blades, including at least one control blade pivotably mounted to the hub. A control system provides a control signal to a magnetic actuator to adjust the blade pitch of the control blades as the blades rotate about the hub. The change in blade pitch produces a torque on the driveshaft that can be used to control the heading of the vehicle.