Propellers TRIZ Cases
- Coaxial Propeller Propulsion Layout for Reduced Aircraft Drag
Nested coaxial driveshafts let multiple electric motors share one gearbox axis, shrinking propeller propulsion diameter to cut drag and fuel use.
- Variable Pitch Propeller Control Valve for Feather and Reverse
A single electrohydraulic servovalve combines overspeed, feathering, and reverse control to cut propeller system weight and preserve engine efficiency.
- 3D-Woven Hollow Composite Propeller Root for Variable Pitch Loads
A 3D-woven hollow composite root cuts blade mass while resisting traction, bending, and circumferential compression in variable pitch turboprops.
- Retractable Rotor VTOL Aerodyne for Compact Urban Flight
Retractable side rotors and a steerable counter-rotating tail propeller enable VTOL flight in tight urban areas while cutting drag and noise.
- Stator Vane Attachment Structure for Cantilevered Bending Loads
Spaced flange members and a crosswise support stiffen cantilevered stator vanes to handle bending loads in unducted turbofan airflow.
- Unducted Engine Stator Chord Variation for Obstacle-Driven Airflow
Varying stator blade chords around aerodynamic obstacles improves airflow straightening, limits local overload, and supports thrust efficiency.
- Composite Turbine Airfoil Core-Wrap Structure for Heat and Impact
A plies core reinforced by a composite wrap helps turbine airfoils stay lightweight while improving heat-region strength and impact resistance.
- Variable Pitch Vane Shroud Interface for Faster Turbomachine Maintenance
A releasable annular shroud lets pitch change components be removed and reassembled quickly while preserving kinematic adjustment.
- Rotor Hub Assembly With Cyclic Pitch Control for Vibration Reduction
A gimbal-linked rotor hub enables cyclic pitch control without a swashplate, cutting AMV rotor vibration and noise during takeoff and edgewise flight.
- Variable Pitch Airfoil Assembly With Balancing Insert for Vibration Stress
A balancing insert counteracts center-of-mass shift in a variable pitch airfoil assembly, reducing vibration stress and mechanical load.
- eVTOL Propeller and Inlet De-Icing Using Motor Heat and Oil Flow
Motor waste heat and redirected oil flow prevent ice on eVTOL propellers and air inlets without adding dedicated anti-icing weight or power.
- Composite Propeller Blade Root With Hollow Spar-Reinforced Structure
A 3D woven hollow root with an inserted spar enables a compact rotationally symmetric propeller blade root that resists traction, bending, and compression.
- Coaxial Fan Pitch Actuation for Space-Constrained Turbofans
A coaxial gearbox and hydraulic actuators fit variable-pitch fan control inside the hub, handling high loads in limited turbofan space.
- Movable Slat Wing Layout for Lift-Drag Balance
A forward-extending movable slat boosts low-speed lift through gap airflow acceleration while cutting cruise drag in the same wing arrangement.
- Curved Blade Spar Laminate With Variable Fibre Alignment
Variable fibre alignment follows blade curvature to cut laminate waste and improve blade spar mechanical properties.
- VTOL Propeller Adapter With Snap-Fit Alignment and Capture Walls
Snap-fit capture walls and an alignment boss secure VTOL propellers in the correct orientation, reducing installation errors and detachment risk.
- Fiber Application Head With Transverse Layup for Complex Composite Shapes
Transverse fiber layup improves head clearance on complex composite parts while supporting varied reinforcement angles and crease-free multilayer deposition.
- Rotary Wing Blade Geometry for Pitch Load and Hover Balance
Variable chord, twist, and offset along the blade span reduce pitch control loads at high speed while preserving hover and low-speed lift.
- Curved Blade Spar Laminate with Variable Fibre Alignment
Fibre paths that follow blade spar curvature reduce laminate waste and improve mechanical properties in rotor blade manufacturing.