Propellers TRIZ Cases

Inner surface slots replace complex air supply holes, simplifying manufacturing while enhancing thermal management.

Segmented rotor blades adapt to site constraints like noise limits, maximizing energy yield while maintaining structural reliability.

A turbine blade tip shroud features segmented core and peripheral plenums with dedicated cooling passages for targeted heat removal.

Segmented fan blades maintain turbojet performance while lowering mass and procurement costs.

An actuator extends a duct section ahead of a cutout to prevent flow separation during vertical takeoff transitions.

An annular trunnion relocates the pitch control system upstream, reducing cantilever mass on bearings to minimize dynamic loads.

Varying blade geometry parameters flattens the exit pressure profile between 75 and 95 percent span height, reducing wake interactions and engine noise.

A flapping hinge integrated into a fan blade allows axial movement to alter the effective angle of attack.

Curved airfoil blades in a synthetic resin rotor enhance pressure differential generation while resolving structural stability issues at high rotational speeds.

A wind turbine control system detects yaw misalignment to restrict rotor blade pitch angle changes.

Stepped shroud gaps create labyrinth seals that dissipate cooling air pressure to prevent leakage under thermal expansion.

Prime-numbered blade segments disrupt sub-harmonic vibrations, stabilizing spectral bandwidth and pulse-to-pulse energy stability.

A flight control system displays a pipper symbol to indicate cyclic controller displacement relative to design maximum total flapping values.

A circular ring device captures centrifugal oil spray using a radial basin and toroidal chamber to direct fluid flow toward discharge channels.

Burned-out fugitive fibers form void regions filled with ceramic matrix to enhance interlaminar strength without compromising in-plane properties.

A gimbaled spinner fairing assembly transitions between neutral and canted positions to maintain aerodynamic alignment during rotor articulation.

A one-piece thermoplastic rotor blade afterbody transfers loads through a unified internal structure.

Twin-ducted fan power system generates lift while foldable wings minimize aerodynamic resistance from crosswind disturbances.

A rotor blade folding system collapses the pitch bearing assembly within a bearing housing to minimize structural support requirements.

Locking airfoil blades parallel to wing edges enhances lift during takeoff and landing phases.

Exterior acoustic panels reduce interaction tones and total radiated noise by absorbing reflected sound waves.

Tungsten carbide thermal spray coatings extend cone brake service life by resisting erosion and wear on aerospace propeller systems.

Mechanical linkage synchronizes CROR rotor pitch to reduce control complexity while maintaining aerodynamic stability.

A single-lever autothrottle controller coordinates engine power and propeller pitch via automated command output.

Two-phase coolant absorbs waste heat from electric machines and directs it to nacelle inlets for anti-icing and thrust generation.

A wingtip-mounted pusher fan directs convergent backwash to dissipate vortex energy and reduce airframe drag.

Permeable sleeves contain migrating bond paste in wind turbine blades, preventing cavity weight gain and structural damage.

A swept outboard section on rotor blades modifies local aerodynamic parameters to optimize lift distribution across varying flight conditions.

Ball-and-socket support frame couples spherical abut seat to drive motor, expanding wind outlet area while maintaining structural stability.

Aligning bolts along the longitudinal axis optimizes stress distribution, reducing cross-sectional area and aerodynamic drag while maintaining strength.

Active weights adjust phase and amplitude to cancel vibrations, preventing airframe amplification during transient flight conditions.

Concentric inner and outer permanent magnet rotors induce torque from a coreless stator winding, eliminating iron loss in electric aircraft propulsion.

A single actuator device activates the braking system and rocket sequentially, reducing cockpit complexity and improving emergency response reliability.

Restricted bypass paths warm viscous oil during feathering, maintaining actuation speed without oversized valves that increase weight.

Pliant curtain bridges gap between rigid edge extension and rotor hub, reducing airflow separation and drag at the cylindrical root region.

An aircraft propulsion system reduces propulsor tip speeds while maintaining power density through epicyclic gearboxes and shared stator mounting.

Aperture control systems manage airflow within wind turbine blades to reduce structural loads and prevent aerodynamic stall during operation.

An obtuse angle between the rim side wall and end wall allows vertical channel drilling, improving suction rim cooling while maintaining structural strength.

A forward folding rotor blade mechanism uses a split bearing plate and fold linkage to pivot blades into a compact stowed position.

Segmented dovetails separate blades from platforms, reducing thermal stress and weight in turbomachines.

Aerodynamic spinner shapes extract energy from airflow, resolving low axial induction in root regions to boost rotor torque.

A dual-coil solenoid valve modulates hydraulic fluid to adjust aircraft propeller blade pitch.

Textile bands retain detached blade fragments at the root, reducing containment case weight and out-of-balance loads.

Reciprocating curved propulsor ejects fluid mass to create thrust, eliminating cavitation and stall limits found in rotary screw designs.

Monotonic serration patterns on turbomachine blades minimize mechanical stresses while reducing noise through turbulence alignment.

Gearbox guiding means enable precise work instrument positioning, reducing maintenance time and complexity.

Circular force generators produce controlled rotating forces that cancel nonrotating body vibrations, reducing noise and stress.

Logarithmic spiral blades with defined curvature radii create a fluid pathway that reduces flow separation inefficiencies and lowers electric power consumption.

Asymmetric oval spars resolve manufacturing complexity by replacing tight D-shaped radii with simpler geometry while maintaining stiffness.