Engine Fuctions TRIZ Cases

Closed oil channels in the carrier element route transmission oil to highly loaded bearing zones, improving cooling, lubrication, and bearing life.

Rotor re-orientation lets a UAV keep NDI sensors in contact while skimming hard-to-reach wind turbine blade surfaces for faster inspection.

A tiltable interface between the satellite carrier and shaft compensates misalignment, reducing asymmetric stiffness and gear contact pressure.

Real-time pump models use sensor data to predict liquid arrival and adjust station settings for viscosity-driven efficiency gains.

An internal squealer tip cooling channel cuts turbine blade tip thermal loading while reducing external cooling flow and aerodynamic losses.

A directional coupling and lock let an ESP pump freewheel forward while blocking reverse motor rotation and hazardous voltage generation.

Concave buoy faces and collapsible ADMC gear teeth convert both wave directions into usable motion while reducing wear and maintenance.

Dual oil pumps and a shuttle valve keep fan drive gears lubricated while splitting power extraction across both turbofan spools.

Driving accessory rotors from planetary gears frees turbomachine layouts, shrinks nacelle size, and supports higher onboard power.

When oil pressure fails, fuel is diverted to lubricate critical engine parts, extending operation without a heavy backup oil reserve.

A concentric two-stage ballscrew layout delivers long thrust reverser stow and deploy stroke within a shorter nacelle installation envelope.

Pivotable scoops on the ring gear recover and redirect lubricant at low speeds, improving turbomachine reducer lubrication without bulky pumps.

An off-the-shelf lock nut and threaded retainer secure the starter sun gear while cutting custom parts, shims, and assembly time.

Waveguide sensors track thrust bearing vibration so control can adjust cavity pressure, prevent cross-over, and keep rotor dynamics stable.

Independent annular oil circuits separate cold supply from hot recovery in aircraft reduction gears, limiting churning and overheating.

Multi-signal analysis combines mode placement, vibration spectrum, and operating data to predict and classify gas turbine core rubs.

A segmented planet gear layout with fore and aft ring gears delivers high turbine-to-propeller speed reduction with less weight and complexity.

A clutch-linked power transfer unit redirects low-pressure spool power to the high-pressure spool to cut idle thrust and fuel flow.

Split low-spool bearing placement and planetary gear reduction improve fan speed matching, thrust efficiency, and cruise fuel use.

Partially immersing the rotor plain bearing in an oil sump enables pump-free hydrodynamic lubrication, reducing nacelle complexity and wear.

A rotating oil scraper collects oil from the planet carrier and feeds gearbox bearings during idling without pump energy loss or orientation limits.

A differential gear and motor-assisted APU drive keeps shaft speeds efficient under varying loads while supplying generator power and airflow.

Flexible carrier posts and spherical joints let the gear support follow case bending, cutting misalignment, heat loss, and bearing loads.

A restricted aeration path and gravity-fed reservoir keep a wind turbine gearbox lubricated during pump failure, reducing friction damage and downtime.

A recessed blade surface guides centrifugal water droplets to the trailing edge, cutting steam turbine erosion without weakening blade strength.

Flexible shafts and ring gear carrier bearings let geared turbofans slow the fan while maintaining alignment, lowering stress, and improving fuel use.

A movable mass with friction slides and stop elements damps large tower vibrations during wind turbine assembly or dismantling.

A two-shell cage lets turbomachine reducer satellites be assembled more easily while sharing load without heavy flanges.

Axial bores and cage-mounted nozzles improve oil delivery in aircraft turbomachine gear reducers while reducing leakage and passage complexity.

A fixture with actuators and adjustable struts applies even pressure to flatback inserts, preventing paste voids and keeping blade bonding gaps consistent.

A dual-side separator deaerates gearbox oil before tank return, cutting dwell time, heat loss, and tank weight in geared gas turbines.

Localized CMC damage is repaired by removing the worn section, joining a conforming replacement, and restoring turbine service life with less downtime.

A gutter-mounted assembly captures seal-wept oil and uses a windage blocker to drive drainback into the bearing oil-wetted zone.

A turnbuckle shaft clamps concentric rotor shafts while easing balancing and hardware replacement without full gas turbine disassembly.

An epicyclic gear train with sprag clutches drives an auxiliary oil pump in either direction, saving space and maintaining lubrication during windmilling.

Independent oil supply and recovery circuits speed hot oil evacuation in an aircraft reduction gear, limiting overheating and improving lubrication.

A sprag-clutch gear train keeps lubricant flowing in geared turbofan engines during forward operation and reverse windmilling.

Different compressor-side and turbine-side bushing geometries break lubricant film synchronization to improve rotor stability and NVH.

Specific ring gear carrier angles and radius ratio limit crown axial displacement under centrifugal load, reducing gear tooth stress.

Cold-sprayed sliding layers let the gear and bolt act as a plain bearing, cutting parts, tolerance demands, and assembly effort.

Electroforming creates a monolithic duct, rail, and stiffener structure that manages turbine heat, distributes hoop stress, and reduces leakage.

Conductive pins bridge multi-part airfoil cavities to cut thermal resistance, block debris paths, and preserve cooling channel flow.

Anticlastic web curvature in a one-piece planetary carrier cuts stress, weight, and material use while staying castable for wind turbine drivetrains.

An internal oil circuit cools a reduction gear pivot to lower temperature, preserve bearing capacity, and enable weight reduction in turbomachines.

Combining low- and high-pressure spool inputs narrows output speed range and reduces low-speed torque, simplifying accessory transmission gearing.

Split forward and aft pins let a CMC seal segment expand independently, reducing shroud stress, misalignment, and leakage.

A heat shield, insulation pack, and air gap keep gas turbine foundations below rated temperature and avoid costly support upgrades.

An obstructing air separation tube creates staged oil-air separation, supplying intermediate deaeration before downstream complete separation.

A manually reversible decoupler locks out re-engagement after back-drive, protecting the air turbine starter and cutting replacement needs.

A shielding region and oil collection groove capture ejected oil, protecting oil jets and sustaining gearbox cooling and lubrication.