Propellers TRIZ Cases

A sunlight filter device with a polarizer and neutral density lens maintains detection accuracy in direct sunlight for helicopter blade trackers.

A contoured turbine blade platform transitions from a pressure-side bank to a suction-side trough.

Bridge rectifier converts 3-phase AC to single-voltage DC, eliminating load imbalance on rotors with non-multiple-of-3 blades.

Dual support members balance centrifugal loads to eliminate counterweights and prevent overspeed in variable pitch rotor blades.

Inner and outer shrouds generate negative pressure to pull extra air, resolving clearance constraints while boosting axial flow efficiency.

Segmented chevron trip strips create vortices that impinge on the leading edge nose, raising heat transfer coefficients where standard cooling fails.

A propeller coupler uses a movable body and resilient element to secure the attachment interface.

Segmenting the fan blade allows independent pitch control, maintaining core airflow and reducing turbulence during reverse thrust operations.

A ducted fan integrates into the wing trailing edge to provide propulsion.

A propeller actuator integrates the tailshaft and pitch change yoke into a single structure.

Sensor-based detection identifies installed propellers to eliminate manual configuration errors and optimize fuel consumption.

An inertia device converts electrical energy into mechanical storage within the actuation circuit.

A radial fan impeller uses segmented blades to maintain a steep characteristic curve while enabling cost-effective one-piece molding.

Trimming the delaminated edge and applying composite layers restores structural integrity while maintaining mating surface tolerances.

Segmented melt-weld joints retain vanes uniformly without shifting adjacent components during replacement.

Upstream vane assembly reduces inlet Mach number to prevent choking, enabling higher blade counts that lower noise levels.

Blades combine wind energy generation with mineralization reactions to scale CO2 removal beyond conventional limits.

Direct motor mounting eliminates bulky gear trains and hydraulic transfer bearings, reducing leakage risks in rotating propeller systems.

Curved root geometry in a turbine rotor assembly adjusts weight balance while preventing stage loss from stopper blocks.

Machining turbine disk slots using interchangeable cutting tools eliminates custom rail manufacturing, reducing production costs and time.

Profiled marker terminations on a rotating feedback device reduce edge-effect reading errors to improve blade pitch measurement accuracy.

A shrouded wind turbine uses radial plates and a conical ring to mix airflow and reduce downstream pressure.

Axial grooves in a gas turbine flow directing member route cooling fluid to the endwall, reducing hot gas ingestion and aerodynamic losses.

Segmented tip shrouds with nested alignment features prevent overlap and leakage, extending blade life by reducing tip mass creep.

Coaxial disc mechanism tilts blades while maintaining constant coupling distance, rebalancing load distribution to reduce acoustic noise from dissymmetry.

A foam adhesive layer with low tensile modulus reduces ice adhesion on aerodynamic surfaces.

Centrifugal flow through internal blade channels creates suction that promotes laminar flow, reducing parasitic drag and noise.

Segmented roller guides and cable tensioning resolve complexity trade-offs while magnetic damping ensures smooth screen deployment.

Radial bores supply grease while screw holes discharge it, eliminating extra installations.

Molded protrusions on the composite vane leading edge control adhesive thickness for precise metal sheath attachment.

A rotating circular aerofoil generates lift through centrifugal action created by radial fins, eliminating the need for translational fluid flow.

Scalloped hubs secure hollow blades and cast turbines directly onto tips, reducing engine length and manufacturing costs.

A concealed fan mechanism uses a pivot member and oscillating assembly to rotate blades 360 degrees while distributing mechanical stress evenly.

Outboard pivot placement reduces storage footprint while maintaining mechanical simplicity through modular connections.

An ovate ledge on the stator nozzle inner band creates a smooth aerodynamic interface for gas turbine stages.

Segmented bearing and locking mechanisms reduce propeller weight while maintaining structural integrity against tensile loads.

Powertrain control system manages engine speed and propeller pitch to resolve weight and power density contradictions in hybrid aerial vehicles.

A separable pod aircraft rotates its flying frame relative to a stationary horizontal pod assembly to transition between vertical takeoff and landing and forward flight modes.

A gimbaled rotor hub constant-velocity drive system uses a differential mechanism to transfer static torque while accommodating cyclic relative rotation.

An integrated shipping fixture supports jointed wind turbine blade sections during transport and provides mechanical alignment features for assembly.

An integrated conical shaft cap with a pilot section connects a tie rod to a rotating shaft, eliminating extra supports that increase weight and complexity.

A downward canted wing tip device reduces induced drag through vortex manipulation.

A turbine blade features a pressure side flute extending below the tip cap to enhance internal cooling circuits.

Relocating the actuation mechanism to the inner core eliminates the outer nacelle requirement, resolving structural complexity while enabling noise reduction.

A rotary damper adjusts its coefficient based on instantaneous load factors to deliver precise haptic feedback through manual flight controls.

Extracted threaded hub components reduce stress concentrations while tapered rollers increase moment capacity without special tools.

Rotating guards mitigate collision damage and serve as landing gear, reducing structural complexity.

Coordinate-defined blade contours improve airflow efficiency while resolving manufacturing complexity trade-offs.

Diffusion bonding replaces riveted tungsten and steel components in ram air turbine flyweights, reducing assembly complexity and material costs.

Pressurized masking fluid prevents coating intrusion into coolant holes, eliminating sacrificial filler removal and improving heat transfer rates.