Aerodynamic aquatic weed removal and decontamination devices and decontamination methods are disclosed. In an embodiment, the aerodynamic aquatic weed removal and decontamination device includes a boat body and a shore-based device for remotely controlling the boat body. The boat body includes a power unit, a weed removal and decontamination unit, a positioning system, an environment perception system, and a shipborne controller. The power unit includes an engine, a propeller connected to the engine, and a rudder servo motor configured to control a heading of the boat body. The weed removal and decontamination unit includes a mesh conveyor. The positioning system includes a positioner configured to obtain real-time location information and heading information of the boat body. The environment perception system includes a wind sensor and a visual sensor. The shipborne controller is configured to control a navigation state of the boat body.

Electrohydrodynamic rotary systems and related methods are provided. The systems include at least one rotary device comprising a hub portion, an axis of rotation, and at least one blade extending radially from the hub portion. The systems also include at least one electrically conductive rotary electrode emitter coupled to the at least one blade proximate to the back edge thereof, and at least one electrically conductive counter electrode positioned proximate to the at least one rotary device in a spaced relationship. The systems further include an electrical system that applies an electric potential difference between the at least one electrically conductive rotary electrode emitter and the at least one electrically conductive counter electrode that generates corona discharges from the at least one rotary electrode that form flows of ionic wind emanating therefrom that rotate the at least one rotary device about the axis of rotation in a first direction

Electrohydrodynamic rotary systems and related methods are provided. The systems include at least one rotary device comprising a hub portion, an axis of rotation, and at least one blade extending radially from the hub portion. The systems also include at least one electrically conductive rotary electrode emitter coupled to the at least one blade proximate to the back edge thereof, and at least one electrically conductive counter electrode positioned proximate to the at least one rotary device in a spaced relationship. The systems further include an electrical system that applies an electric potential difference between the at least one electrically conductive rotary electrode emitter and the at least one electrically conductive counter electrode that generates corona discharges from the at least one rotary electrode that form flows of ionic wind emanating therefrom that rotate the at least one rotary device about the axis of rotation in a first direction

An air propeller assembly for moving a boat in shallow water includes a mount that can be mounted on a gunwale of a boat. A rod slidably is slidably coupled to the mount and the rod is rotatable about a vertical axis. A plate is coupled to the rod such that the plate is horizontally oriented when the mount is positioned on the gunwale. A steering handle is coupled to and extending away from the plate for steering. A motor is coupled to the plate and a propeller is coupled to the motor. The motor rotates the propeller when the motor is turned on. Additionally, the propeller agitates the air when the propeller is rotated to urge the boat through shallow water.

An air propeller assembly for moving a boat in shallow water includes a mount that can be mounted on a gunwale of a boat. A rod slidably is slidably coupled to the mount and the rod is rotatable about a vertical axis. A plate is coupled to the rod such that the plate is horizontally oriented when the mount is positioned on the gunwale. A steering handle is coupled to and extending away from the plate for steering. A motor is coupled to the plate and a propeller is coupled to the motor. The motor rotates the propeller when the motor is turned on. Additionally, the propeller agitates the air when the propeller is rotated to urge the boat through shallow water.

A trim system for an airboat having a hull and a deck comprises an engine support carriage elevated from the deck and having a first end pivotably mounted to the deck via a rigid frame, and at least one remotely operated hydraulic ram with each including a first end braced upon the deck or an intervening structure and a second end coupled to a free moving second end of the engine support carriage opposite the first end. In a method of adjusting trim on an airboat, during operation of an engine mounted to the engine support carriage, a thrust line of the engine is selectively changed by remotely causing the at least one linearly actuated lift to selectively extend and retract.

A trim system for an airboat having a hull and a deck comprises an engine support carriage elevated from the deck and having a first end pivotably mounted to the deck via a rigid frame, and at least one remotely operated hydraulic ram with each including a first end braced upon the deck or an intervening structure and a second end coupled to a free moving second end of the engine support carriage opposite the first end. In a method of adjusting trim on an airboat, during operation of an engine mounted to the engine support carriage, a thrust line of the engine is selectively changed by remotely causing the at least one linearly actuated lift to selectively extend and retract.

An air propeller assembly for moving a boat in shallow water includes a mount that can be mounted on a gunwale of a boat. A rod slidably is slidably coupled to the mount and the rod is rotatable about a vertical axis. A plate is coupled to the rod such that the plate is horizontally oriented when the mount is positioned on the gunwale. A steering handle is coupled to and extending away from the plate for steering. A motor is coupled to the plate and a propeller is coupled to the motor. The motor rotates the propeller when the motor is turned on. Additionally, the propeller agitates the air when the propeller is rotated to urge the boat through shallow water.

An air propeller assembly for moving a boat in shallow water includes a mount that can be mounted on a gunwale of a boat. A rod slidably is slidably coupled to the mount and the rod is rotatable about a vertical axis. A plate is coupled to the rod such that the plate is horizontally oriented when the mount is positioned on the gunwale. A steering handle is coupled to and extending away from the plate for steering. A motor is coupled to the plate and a propeller is coupled to the motor. The motor rotates the propeller when the motor is turned on. Additionally, the propeller agitates the air when the propeller is rotated to urge the boat through shallow water.

An electrohydrodynamic rotary system and related method that include at least one rotary device comprising a hub portion, an axis of rotation, and at least one blade extending radially from the hub portion. The system includes at least one electrically conductive rotary electrode emitter coupled to the at least one blade proximate to the back edge, and at least one electrically conductive counter electrode positioned proximate to the at least one rotary device in a spaced relationship. The system further includes an electrical system that applies an electric potential difference between the at least one electrically conductive rotary electrode emitter and the at least one electrically conductive counter electrode that generates corona discharges from the at least one rotary electrode that form flows of ionic wind that rotate the at least one rotary device about the axis of rotation in a first direction.