Propellers TRIZ Cases

Pivotable flap sections with integrated ducted fans provide variable thrust vectoring, reducing weight while enabling vertical takeoff and landing.

A wind turbine blade integrates a single conductor cable connected to external lightning receptors for reliable current path management.

An end plate at the blade base blocks airflow spilling through gaps, reducing vortex formation that disrupts aerodynamic surfaces.

A tiltrotor mechanism uses a gimbal lock and blade stop assembly to transition between rotary and non-rotary flight modes.

Segmented turbopump design drives high-pressure pumps via a single rotor shaft while independent inducers handle inlet flow, reducing tank weight requirements.

Series-connected actuators override each other to prevent fan overspeed during thrust reversal transitions.

Segmented propellers on linear supports resolve reliability complexity trade-offs, enabling continuous flight after single motor failure.

A vortex generator at the duct lip controls air separation during crosswinds, maintaining thrust efficiency across flight conditions.

A method determines the angular setting of an annular row of stator vanes using a pre-constructed database lookup approach.

Sequential primary and alignment connectors reduce wingtip separation to establish secure fine alignment between flying aircraft.

Segmented torsion straps and elastomeric connectors reduce packaging volume while eliminating periodic lubrication for maintenance-free rotorcraft operation.

Telescopic blades adapt radius to wind speed, resolving the power output versus manufacturing cost trade-off in wind turbines.

Segmented fiber reinforcement housing retains the propeller blade spar, preventing rear edge instability under mechanical stress.

A UAV illumination system directs light through a propeller-mounted component to create a visible ring pattern.

Replacing fluidic systems with a single mechanical actuator and ball bearing eliminates sealing leaks and reduces mass while maintaining pitch control.

Direct electric drive connection to propeller machine eliminates converter weight, complexity, and energy loss for compact aircraft propulsion.

Nested collective and cyclic rods inside the rotor shaft reduce transmission space while maintaining precise flight control.

Axial flow fan blades direct air along the center axis, minimizing radial interference with the casing that degrades heat dissipation efficiency.

Segmented turbine blades with integrated bulkheads reduce shipping costs by enabling remote assembly of large structures.

A spring-biased propeller clutch mechanism aligns blades along a predefined axis when stationary.

Segmenting the nacelle into front and rear sections lowers crane requirements while an intermediate mediator ensures precise alignment.

Segmenting the blade into ceramic and metallic parts reduces manufacturing complexity while maintaining structural integrity.

Internal polymeric damping reduces centrifugal loading and attachment stresses while maintaining structural integrity through selective bonding.

Propeller blades pivot to align with wind flow, reducing drag and improving stability when motors are shut down during UAV transit.

Magnetic field damping replaces mechanical friction to reduce fatigue failures across broader frequency ranges.

Modifying blade mass at anti-nodes shifts resonant frequencies outside the operating range, preventing vibratory stresses and high cycle fatigue.

Actuator applies corrective torque to propeller control shaft, preventing flyweight stalling at zero pitch position.

Pressure differences between reaction stages urge steam through the annulus, removing heat from the rotor surface to prevent windage heating damage.

Offset flap hinge configuration reduces aerodynamic drag and hub moments by integrating laterally spaced bearings between hub plates.

Spherical rolling elements guide upper and lower wings to symmetrical resting positions via coaxial alignment.

Decentralized flap drive assemblies use flex shafts and position feedback sensors to eliminate complex mechanical transmission systems.

Optimized blade blockage ratios in a boundary layer ingestion fan tolerate distorted inlet flow, reducing wake losses and improving propulsive efficiency.

Impingement cooling channels protect rotor disk and flow discouragers from hot gas ingestion while reducing overall cooling air demand.

Canted engine rotation planes prevent cross-engine debris strikes, eliminating the weight and drag penalties of traditional protective cowling.

A paramotor cage uses aerofoil surfaces to generate rotational lift opposing propeller torque.

Variable geometry blade design minimizes energy loss from turbulence while managing mechanical stress.

Segmented attachment isolates threading from the duct wall, reducing surrounding element mass and improving propulsion efficiency.

An inlet slot intersects the inducer bore to define an augmented diameter region, reducing pressure loss when drawing secondary fluids into the compressor.

Defined skeleton line angles in the top thirty percent of blade height reduce energy losses and stabilize flow patterns near the machine casing.

A turbine bucket damping system uses a variable tangential depth pocket and positioned pin to restrain vibration.

Dual-pressure bleed air cools turbine nozzle vanes with stage-specific pressure levels.

An optimized turbine blade profile uses precise Cartesian coordinates to manage airflow and mechanical stress distribution.

A tiltrotor propulsion system uses a combined gearbox with clutches to decouple the engine core from the thrust fan for independent operation.

A lift rotor arrangement with retractable blades stowed inside the wing segment during cruise flight.

Intermediary damper seals leakage paths and reduces vibratory responses in short airfoils, preventing high cycle fatigue at high RPMs.

Recesses around through-passageways shift screw pressure away from radial summits, reducing combined stress damage on turbomachine rotors.

Liquid weighting material integrates into composite rotor blades for precise mass balance adjustments.

A wind turbine controller detects closed loop Eigen frequencies to manage resonance risks during operation.

Segmented actuator design reduces maintenance time and prevents pollutant introduction into the piston chamber.

Root section twist adjusts local angles of attack in the boundary layer region, resolving propeller performance degradation in non-ideal wake inflow conditions.