Rotary Propellers TRIZ Cases

Blast-treated anodic oxide coatings resolve abrasion resistance trade-offs by achieving high film hardness without increasing production time.

Adjusting geometric parameters of the side plate and ports reduces motor load while increasing airflow amount.

Varied pre-swirl stator spans reduce vessel resistance and cavitation by optimizing local flow conditions around the propeller.

A modular wind turbine uses rotating toroidal support structures to align individual turbines with wind direction for optimal power generation.

Composite marine propeller blades use dovetail gaps to reduce stress concentrations and facilitate direct load paths.

Replacing hydraulic actuators with a simple spacer reduces device complexity and manufacturing cost while enabling transom height adjustment.

A rounded bow radius with stabilizing fins reduces vortex shedding to improve course stability at small yaw angles.

Alternating side wall elevations and depressions form a saddle surface that reduces secondary flows and associated pressure losses in turbomachines.

Segmented elastic dampers absorb propeller shaft impacts while circumferential grooves prevent debris accumulation in the hub assembly.

An integrated propeller with an inwardly tapering tail portion eliminates separate end covers, reducing drag and corrosion while boosting efficiency.

A propeller fairing structure enhances fluid flow between blades using a radially outer surface conforming to a specific platform profile.

Baffle plates in a tangential flow machine manage fluid dynamics to enable dual propulsion and generator operation.

Airfoil fins connect the central shaft to the duct in an outboard motor, recovering energy from propeller swirl to offset rotational resistance.

Segmented pipe segments store the motor and propeller compactly, then extend to provide propulsion when stranded.

Air motor drives propeller using compressed air from storage tanks to replace fossil fuel engines and reduce environmental pollution.