Engine Manufacture TRIZ Cases

A guttered baffle channel redirects rotating oil outward and into the drain, improving compressor seal drainage and reducing leakage risk.

Sleeve-shaped two-piece pretensioning units preload rotor blade bolts with precise force, reducing friction losses and assembly time.

A nested washer and locking plate assembly stops tie rod-locking nut loosening under gas turbine vibration, improving fastening stability.

Segmented corrugated fins help a conformal heat exchanger follow annular curvature, increasing active layers with lower pressure drop and weight.

A two-stage epicyclic gear train lets the fan and compressor run at different speeds, improving turbine efficiency without enlarging the engine.

Aligned housing and coupling openings give access to hidden drivetrain fasteners, enabling maintenance without increasing coupling length.

A damaged rotor end plate is restored by machining out the crown section and fastening a replacement strip to preserve balance and flange integrity.

By driving on nut top surfaces instead of using electromagnets, this flange tightening robot cuts propulsion complexity, power demand, and cost.

EDM cooling holes placed in obstructed vane regions bring coolant closer to the leading edge and improve film adhesion in gas turbines.

Foldable sliding shovel mechanisms let one gripper securely lift and transport heavy wind turbine bolts across different magazine spacings.

A prefabricated blade tip with a matched connection interface lets wind turbine blade length change without rebuilding the main body mold.

Periodic reflection of skewed trip strips sustains flow mixing in long passages, limiting thermal saturation and preserving heat transfer.

Rolled thickness variation along a tower segment cuts circumferential joints, saves material, and improves wind turbine tower fatigue life.

A three-lobe butterfly valve cuts torque loading in compressor bleed control while preserving flow capacity and transient thermal efficiency.

A recycled high-speed abrasive medium polishes micro inner flow channels, removing burrs and residue while reducing medium replenishment delays.

Differential-pitch riblet grooves on a coated blade cut fluid resistance while limiting heat transfer to the base member.

A sealed fluid damping chamber built around a curved beam centering spring cuts axial space, eases machining, and improves gas turbine bearing vibration control.

Internal lubricant reservoirs and flexible struts keep gas turbine gear meshes lubricated, absorb vibration, and accommodate misalignment.

A blade-tip plenum feeds forward cooling apertures to cool the trailing edge, reduce oxidation, and resist hot-gas backflow.

Damaged end-plate crown sections are machined out and replaced with a crimped insert, preserving rotor strength and balance.

Segmented journal bearings with an optimized L/D ratio improve planetary gear support and lubrication in compact fan drive gear systems.

A three-lobe butterfly valve geometry cuts torque loading while preserving bleed flow capacity for more precise gas turbine control.

Hydraulic pressure through a gearbox shaft plug forces the main shaft from the connection cavity, simplifying wind turbine gearbox removal.

Rotatable cylindrical inserts in the blade core enable precise functional component alignment without destructive cut-outs, reducing mould cycle time.

Distinct fillet radii and a suction-side patch create a crack boundary in an integrally bladed rotor, improving stress distribution and reliability.

Periodic reflection of skewed trip strips in gas turbine flow passages prevents thermal saturation and sustains heat transfer with low pressure loss.

A carrier ridge cuts grooves into a backside abradable layer to split cooling cavities, improving turbine seal pressure control and reducing leakage.

A threaded adjustable joint lets gas turbine service tubes absorb tolerance stack-up and thermal expansion while reducing assembly stress and weight.

A partially inflatable blade enclosure creates a sealed work area for wind turbine maintenance, reducing transport burden and weather delays.

By redirecting mechanical drive power to aft fuselage fans, this aircraft propulsion layout ingests boundary layer flow to cut fuel burn and noise.

Selective infrared or laser heating joins nacelle panel skins to cellular cores faster, with better temperature control and less deformation.

Convergent dovetail insertion creates gradual shroud interference in rotor blades, simplifying assembly while withstanding high centrifugal loads.

Convergent dovetail insertion builds shroud interference during rotor blade assembly, simplifying tooling while maintaining contact at high speed.

An annular bolt-and-lock-nut bridge stops bearing axial displacement under high loads while avoiding costly precision rings and threads.

A collet puller extracts stuck wind turbine brake pistons without cutting, reducing removal time and maintenance cost.

Segmented arc reinforcement strengthens the outer pitch bearing ring to resist wind-load cracking and extend service life without blade removal.

Frustoconical shoulder and seat faces clamp a locking member to stop service tube loosening, helping prevent oil leakage under vibration and thermal loads.

Runner segments place joining edges away from blades, enabling external robotic narrow-gap welding to cut build time, transport burden, and safety risks.

A shaft-mounted phonic wheel with circumferential apertures works with an overlapping lubricant scoop to improve speed sensing and oil distribution.

A cellular bushing supports a gas turbine conduit while absorbing vibration and allowing thermal case movement to prevent rubbing.

A threaded telescopic joint lets gas turbine service tubes absorb tolerance stack-up and thermal expansion while reducing installation stress.

An inseparable plain bearing bonded to a ring element simplifies nacelle rotor bearings while improving reliability, assembly, and service life.

An inward-facing U-shaped sealing flange keeps lateral arms separated during brazing, simplifying honeycomb panel assembly and preventing collapse.

Structured AlCr and AlCrO PVD coatings create sharkskin-like blade surfaces that cut turbulence while improving oxidation and erosion resistance.

A corrugated bushing shares load with a damping member to absorb engine vibration and reduce harmful loads transferred to the gearbox.

A PTFE composite liner lets segmented wind turbine blade joints handle dithering and sliding without relubrication or unsafe inspection.

Integrated flange connections, roof, and hoisting platform cut nacelle weight and parts while improving lightning protection and maintenance access.

Push fasteners with flexible barbs secure an airfoil cover panel to a metal body, reducing rib weight while preserving structural strength.

A crossover gear set and integrated axial housing drive accessories at different speeds while cutting gearbox weight, size, and flange complexity.

Radial pushers and an extending shaft realign ovalized flange holes, speeding wind turbine tower assembly and reducing crane time.