Rotary Propellers TRIZ Cases
- Marine Propeller Wedge Retention for Composite Blade Weight Reduction
Dovetail slots defined by wedge retaining members restrict radial movement of composite propeller blades, reducing drive system stress.
- Turbine Airfoil Cooling via Chambering Element Pressure Control
Chambering elements create localized high-pressure zones at leading edges, directing cooling gas through gaps to reduce excessive air consumption.
- Shaftless Axial-Flux Underwater Propeller With Hydraulic Film Lubrication
A shaftless axial-flux underwater propelling device uses a hydraulic film to lubricate the rotor and transmit thrust without mechanical contact.
- Thruster Bracket for Angled Transom Mounting
Forward-extending bracket resolves angled transom space conflicts by positioning the thruster for proper water flow and night operation visibility.
- Marine Drive Unit Propeller Orientation for Safety
Rotatable lower drive unit repositions propellers via control signals to prevent injury during swim operations and reduce damage risk in shallow waters.
- Boat Hybrid Propulsion System with Vertical Guide Thruster
Vertical guide device allows electric thruster to emerge or submerge, enabling hybrid propulsion without structural boat modifications.
- Boat Steering Mechanism With Flanking Rudders
Flanking rudders forward of the propeller counteract rotational pull in reverse, reducing the minimum turning radius for planing hull boats.