Rotary Propellers TRIZ Cases
- Fluid Machine Shroud Downsizing via External Bearing Segmentation
Segmenting the motor and bearing reduces shroud volume and drag while maintaining propulsion efficiency for underwater vehicles.
- Marine Propeller Hub Cap with Connection Ring
Segmented hub caps with external connection rings eliminate vortex energy loss while enabling accessible installation on controllable pitch propellers.
- Turbocharger Compressor Wheel Renewal via Shot Peening
Shot peening extends compressor wheel service life by imparting compressive residual stresses to fatigue-prone surfaces.
- Arc Duct and Pre-swirl Stators for Propeller Thrust
Pre-swirl stators create counter-rotating swirl flow to reduce propeller wake resistance while the arc duct generates additional thrust.
- Marine Propeller Adjustable Exhaust Volume
Rotating shielding portions adjust exhaust volume without replacing static plugs, eliminating plug loss and reducing inventory costs.
- Hydrofoil Boat Stabilizer Reducing Drag and Cavitation
True hydrofoil shapes maintain laminar flow, reducing drag and cavitation across varying speeds.
- Combined Propeller Cap Reducing Hub Vortex Cavitation
A combined propeller cap structure reduces hub vortex cavitation through integrated contraction and diffusion sections.
- Single Push Button Switch for Ship Propulsion Control
A single push button switch with an operation processor detects pressing modes to control ship-mounted equipment and power supply states.
- Propeller Blade Flow Holes for Cavitation Noise Reduction
Flow holes in propeller blades discharge or suction water to eliminate blade tip vortex cavitation, reducing underwater noise and vibration.
- Propeller Hub Bushing Limits Axial Noise
An elastomeric bushing limits axial displacement in the propeller hub, preventing noise generation from shaft misalignment across different motor brands.