Propellers TRIZ Cases

Electromechanical pitch actuator replaces complex hydraulic systems with integrated screw mechanisms, ensuring reliable feathering and overspeed protection.

Partial vitrification of the spar preform resin provides structural stability for handling while ensuring strong bonding with the second resin.

Stationary sensors measure blade tips via magnetic coupling to control rotor position against thermal and dynamic fluctuations.

A turbine bucket airfoil shape defined by Cartesian coordinates optimizes profile sections to enhance stage efficiency and aeromechanics.

Clearances between sleeve and tubular bodies compensate for assembly tolerances, maintaining watertight seal without radial shaft holes.

Bayonet flanges eliminate support rings to reduce weight while maintaining structural integrity during mounting.

A rotor assembly damper system generates opposing forces to control relative rotation between rotors.

Purge blades drive air radially outwardly to create a pressure barrier against hot gas ingestion.

Segmented vane supports with detachable covers enable direct in-flight replacement while secondary jet flow provides passive cooling.

Mistuned compressor blades shift acoustic energy away from the blade passing frequency to lower amplitude tones, reducing overall noise intensity.

Segmented autonomous air and ground vehicles access narrow terrain to suppress wildfires before they grow unmanageable.

Aircraft with a passively tilting fuselage eliminates active rotation mechanisms while enabling efficient hovering and forward flight through differential rotor thrust.

Segmented elastomeric access panel reduces tool insertion force while maintaining structural integrity in gas turbine nose cone assemblies.

Dual ring vanes create a torque stage that improves maneuverability while reducing noise from turbulent wake.

A propeller blade pitch actuation system uses a valve to selectively connect the control module drain line for hydraulic pressure management.

Aircraft engine power transmission uses electromagnetic coupling between stator and rotor windings to generate electricity without mechanical brushes.

Centralized pitch control mechanism reduces transmission distance and link complexity to enhance precision and stability in coaxial helicopter rotors.

A semi-waterproof vinyl cover encloses ceiling fans using a zipper closure and drawstrings to secure the fit.

Laser structured furrows anchor conductive tracks in drone rotor blades, resolving arrangement complexity and solid mast incompatibility.

Slat-mounted electric ducted fans accelerate airflow to boost lift, reducing takeoff distance.

A propeller assembly uses a twisting and telescoping hinge mechanism to adjust blade pitch passively.

Integrated wheel rotors with extendable blades protect components during land mode while generating lift in flight.

Optimized dovetail backcuts reduce stress concentrations at blade disk interfaces while maintaining aeromechanical behavior and extending fatigue life.

Segmented guiding angles on the hub reduce air resistance and vortex formation, resolving the trade-off between intake efficiency and noise generation.

A resilient seal member blocks gas leakage between adjacent rotor blades while accommodating thermal expansion and vibrational stresses.

Replacing hydraulic components with an integrated electric motor and screw mechanism reduces device complexity while maintaining pitch control reliability.

Merges an internal plenum into airfoil structures to cool engine oil, eliminating bulky external units and reducing packaging volume.

Segmented airfoil walls create a cavity to distribute stress concentrations, enabling ceramic composites in gas turbine engines.

Compound rotorcraft main rotor generates vertical lift and stores electrical energy during autorotation for safe emergency landing.

A blade-pitch change mechanism adjusts rotor angles via a solenoid and drive pins.

Modulating multiple propeller sizes reduces disruptive noise while maintaining delivery efficiency.

A fixed-wing aircraft creates a gravity well via circular orbit, using a spiral tether to lift subjects from hostile ground points without VTOL requirements.

Segmented engine anticipation logic predicts combined power requirements to maintain rotor speed stability during high-speed flight maneuvers.

A foldable ceiling fan blade assembly uses a spiral spring to enable compact storage and secure mounting.

Deflected regions in the leading edge zone reduce flow separation and wake, lowering broadband noise while maintaining high thrust during take-off.

A removable screen carries erosion protection coatings on aerodynamic leading edges to shield surfaces from particle impact.

Cast refresher flow passages eliminate EDM drilling, reducing stress concentrations and micro-cracks while maintaining cooling efficiency.

Asymmetric blade geometry reduces noise by approximately 1 dB without deteriorating blowing performance or reducing scroll casing volume.

An oil distribution ring connects radial supply channels to axial regulating means in a turbine engine linear actuator.

Segmented nozzle shroud with bushing supports radial vane removal, eliminating full turbine disassembly for overhaul.

A multilayer thermal barrier coating system combines a metallic bonding layer with ceramic layers to enhance substrate adhesion.

A fan blade linkage system rotates all blades simultaneously to switch thrust direction.

Peripheral engine mounting reduces lift unit height while shear bolts manage fan dynamics loads.

A dome-shaped rotor hub cover integrates electronic components on its internal surface to utilize airflow for passive cooling.

Carrier wings support aircraft weight during cruise while a cycloidal propulsion unit generates directional thrust, reducing air resistance from propellers.

Aerial vehicles use discrete propeller sets with intentional imbalance to emit predetermined sounds during flight.

A thermal barrier coating incorporates sodium compounds to react with molten sand and form a removable silicate layer.