Engine Fuctions TRIZ Cases

An intermediate gear carrier expands relative speed control between fan, compressor, and turbines to improve geared engine efficiency.

Thorn-like trailing-edge extensions in the hub region stabilize vortices, preserve lift, and cut wind turbine blade noise.

Rifling grooves inside a rotating shaft guide drip-fed lubricant to axial holes, improving lubrication at low feed pressure in small-diameter shafts.

A slotted baffle channel redirects surplus lubricant away from unmeshed bevel gear teeth to cut windage without causing lubricant churning.

Separated annular cup recesses route oil to gear meshes and planet shafts while draining excess oil to prevent low-speed heating and splatter.

Specified planet carrier stiffness ranges help an aircraft epicyclic gearbox absorb misalignment, balance planet loads, and reduce distortion risk.

A single-piece annular carrier uses a wall opening and cover plate to load large or herringbone gears without losing strength.

Woven fiber joints bond ceramic-matrix blade track segments into a continuous hoop that cuts gas leakage and scales to larger turbines.

Angled capture surfaces, recesses, and internal channels retain oil inside a rotating shaft and distribute it evenly to multiple lubrication sites.

Multiple clutched gear ratios let a gas turbine low spool drive a generator across a wide speed range while maintaining usable output speed and torque.

A kinematic switch lets a turbofan planetary gearbox free a normally static gear part during failures, cutting fan drag in windmilling.

An epicyclic drive with reversible electrical power transfer matches turbomachine fuel flow demand while cutting recirculation and power loss.

A flat floating axial disk and lubricant sleeve cut low-speed wear and simplify assembly in a planet gear bearing arrangement.

A lockable single actuator drives both thrust reverser sleeves, cutting actuator count, weight, and synchronization complexity.

A solenoid-driven cam and ball spline disconnects and resets the generator shaft before high-speed vibration and damage can escalate.

Offset oil tank outlets and a pressure sensor warn of low gearbox oil feed early while preserving bearing lubrication in aircraft engines.

A central torque coupling and radial center arms shorten the torque path to cut planet carrier twist while keeping the epicyclic gear train compact.

A piston-and-bypass inlet valve combines blow-off and non-return functions to simplify compressor control and prevent oil ejection.

Offset bolt planes and spacers raise wind turbine tower flange load capacity without increasing tower diameter or blocking assembly access.

Modular rails fasten to the manhole flange and let tools or turbine parts move farther inside, cutting maintenance time and improving access.

Pressure-responsive fluid passages keep the squeeze film damper pressurized, preventing cavitation and sustaining shaft vibration damping.

A two-piece ring gear with direct flange mounting removes spline wear and radial movement while improving balance, rigidity, and oil control.

Hydraulic pistons and parallel clutches let this aircraft gearbox convert a wide spool speed range into stable accessory speeds with less brake wear.

An aft collar shifts radial loads off fan disc splines, easing disassembly and reducing damage without heating or cooling.

A flat floating axial disk helps planet gears avoid dry running at low speeds, cutting wear, assembly effort, and maintenance.