Steering Rudders TRIZ Cases
- Bent Lower Rudder Section for Twin-Propeller Wake Drag Reduction
An angled lower rudder section cuts drag and propeller-wake turbulence in twin-propeller ships while preserving steering lift.
- Tilt-Tube Steering Cylinder for Compact Serviceable Outboards
Integrating the steering cylinder into the tilt tube cuts space use, enables on-site replacement, and keeps steering force balanced in both directions.
- Outboard Motor Steering Mechanism With Dual Racks and Idle Relief
Dual racks and relief portions let the pinion idle, giving an outboard motor large steering angles without increasing motor size.
- Retractable Kayak Tail Rudder Control to Avoid Hull Collision
A clutch-based tail rudder control lets a kayak rudder retract into the hull without bottom collision, using guided flipping and reset states.
- Truss-Supported Ski-Borne Watercraft for Low-Speed Buoyancy
Buoyant skis support the craft at lower velocities, then generate lift in forward motion to raise the body and reduce hydrodynamic drag.
- Pivoting Scoop Rudders for Rapid Ship Deceleration
Pivotable rudder flaps form a scoop to reverse propeller-driven water flow, enabling rapid deceleration without a reversing gear.