Propellers TRIZ Cases

Woven internal airflow channels in composite propeller blades redirect slipstream from root to trailing edge, mitigating intake distortion and pressure drop.

Cross-connecting clutch engages dual hybrid propulsion systems to drive propellers and manage torque distribution.

Segmented sensors and preliminary trajectory calculations enable safe propeller parking control during electric aircraft transitions.

A trunconical bellows with an O-ring seals connecting rods in rotating oil chambers.

Asymmetric fastback turbulators prevent flow stagnation and dust accumulation in gas turbine engines while maintaining high heat transfer efficiency.

Internal ribs in the tip shroud cavity distribute coolant flow, lowering metal temperatures and mechanical stress on the structure.

A spring-loaded lock pin engages a rotating aperture to secure ram air turbine blades during stowage.

A hybrid-electric engine adjusts the rotational force ratio between electric and thermal components to reduce noise during takeoff.

Acoustic sensors detect tonal noise emissions in wind turbines to trigger control units that adjust operating parameters.

Rotating leading edge structure shifts foil contour via sliding skin edges, reducing mechanical complexity and drag forces compared to traditional flaps.

Feedback swashplate assembly adjusts blade pitch via linear actuators to resolve stability and complexity trade-offs during flight mode transitions.

Rim-mounted airfoil blades create an airflow gap that reduces rotational resistance and minimizes bird collision risks.

Axial impeller translation modulates magnetic coupling strength, preventing high pressure damage during low fuel flow without complex drives.

A ducted fan engine uses a high stator-to-rotor blade ratio to shield noise sources and improve airflow efficiency.

A variable geometry lift fan mechanism aligns blades in-line to minimize frontal area during forward flight.

A bi-cast turbine rotor disk combines a superalloy ring with ceramic matrix composite blades bonded by diffusion.

A monitoring system establishes operational boundaries for fan rotation rates to detect anomalies across varying speeds.

Pivotable airfoils adjust pitch to minimize aerodynamic drag losses while maintaining high power generation capability.

A propeller control system monitors rotational speed and blade angle to detect fixed pitch operation.

Expanding segmented inner ring maintains compressive stresses at the propeller blade adhesive interface, preventing tensile failure under low centrifugal loads.

Segmented supply ducts within the heel improve metal distribution and reduce porosity.

Welded turbine rotor combines nickel-based alloy and chromium-molybdenum-vanadium steel sections to minimize thermal stress from expansion differences.

Clutch engagement creates relative speeds between rotors and sliding elements to automatically feather blades during control system failures.

A hybrid helicopter adjusts rotor cyclic pitch to maintain longitudinal trim during flight transitions.

Shell cleats and shims secure blade roots to reduce part count while maintaining aerodynamic continuity.

A hub-mounted mechanism adjusts blade pitch through helical sliding guided by elastic members and centrifugal force.

A turbine blade retainer uses a groove and flange interface to secure the assembly within rotor disk slots.

Axial pins in grooves restrain foil bearings, preventing migration and wear that shortens component life.

Inverted turbulators create local vortices to restrict hot gas leakage through stator-rotor gaps, eliminating reliance on compressor purge air.

Liquid metal damping resolves narrow ratio limits by adjusting viscosity through dispersions, protecting long airfoils from premature failure.

A movable fairing assembly covers exposed spinner openings on tiltrotor aircraft, reducing parasitic drag and increasing maximum forward airspeed.

Passive RFID transponders transfer blade data wirelessly to tower readers, enabling remote damage detection and maintenance scheduling.

Spherical mounting race pivots the rotor shaft to reduce dynamic loads on the support frame.

A geared turbofan engine uses a specific hub-to-blade mass ratio and optimized rim thickness to reduce vibrations and flutter at lower rotational speeds.

A propeller control assembly uses a two-position solenoid valve to regulate fluid flow for precise speed management.

Electrothermal heater warms lubricant in tiltrotor proprotor gearbox to prevent gear malfunctions caused by high-altitude cold-induced viscosity spikes.

Modulating generator torque induces resonant vibrations in wind turbine blades to detach accumulated ice.

A magnetostrictive displacement-measuring device couples to a hydraulic mechanism via an oil transfer element and annular magnet.

Interface ring integrates axial fluid ducts and electrical connectors to simplify assembly and reduce manufacturing complexity in turbomachines.

Foam-filled hollow blades and hydrofoil frame members lower drag forces while counter-rotating rotors enhance stability to improve energy extraction efficiency.

Solenoid valve dumps hydraulic pressure to lock propeller blades, eliminating mechanical link complexity.

An integrated rounded flow body and axial groove at the blade tip reduce eddy formation and noise emissions while maintaining manufacturing simplicity.

A hydraulic actuation control module integrates a flow metering valve and electronic control unit within the propeller assembly.

Axial flow brushless motor replaces hydraulic circuits to eliminate oil leak fire risks in aircraft turbine engines.

A pipe profile propulsion engine with rotating props and shafts generates variable directional thrusts and lifts for aircraft applications.

Asymmetric serial fan assembly resolves skewed airflow bottlenecks by compressing air between differently sized fans to increase pressure and volume.

An electrohydraulic servovalve manages propeller pitch angles through precise hydraulic fluid flow control.

A peripheral band-shaped wall element yields at high speeds to create a braking force, preventing hazardous overspeeds without complex mechanical actuators.

Replacing chemical milling with CNC machining and finite element analysis eliminates toxic risks and labor-intensive masking while ensuring precision.