Power Installations TRIZ Cases

An impedance balancing noise filtering circuit uses passive components to cancel common mode currents in electric drive systems.

Phase alignment system matches multiphase signals between variable frequency generators, eliminating abrupt voltage changes and removing stabilizing circuitry.

A driveshaft uses frusto-conical ends to lower torsional stiffness while maintaining lateral rigidity.

An APU fuel system uses oxygen-enriched air and hydrogen barbotage to overcome low-temperature startup bottlenecks at high altitudes.

Dual fuel propulsion system uses cryogenic LNG vaporization and thermoelectric generators to produce electrical power from engine exhaust heat.

A vortex rotor extracts kinetic energy from induced drag to power a stagnation compressor, reducing pressure drag and fuel consumption.

A ram air fan bypass valve directs airflow around the rotating assembly to eliminate continuous power consumption.

Hydraulic support struts pivot wings via working cylinders and generate electricity from vibrations, resolving structural weight penalties.

A cryogenic fluid heat exchanger integrates cooling and heat sink functions within an aircraft environmental control system.

A metallic layer bonded to a composite core resists foreign object debris and rain erosion while heating elements prevent ice accumulation.

A speed engaged clutch mechanism couples a ram air turbine to its power train only after reaching a target rotational speed.

Accessory gear box and auxiliary compressor nest inside the inner cowl to drive components without expanding engine diameter.

A segmented RAT mounting frame uses discrete lugs and rods to shift natural resonant frequencies away from operating ranges.

Inclined internal rim guides liquid to an aperture for controlled release by incoming airflow, preventing fuselage contamination and reducing parasite drag.

A pivoting door on an aircraft auxiliary power unit air intake assembly angles the inlet orifice to block vertical particle entry.

Shape memory alloy actuators rotate vortex generator vanes between stowed and deployed positions, reducing drag during cruise flight.

A flexible bellows connects an aircraft auxiliary power unit engine to a rigid drain pipe, absorbing operational vibrations and misalignments.

Piezoelectric transducers harvest energy from fuel movement to power ultrasonic agitation, eliminating bulky heat exchangers that increase aircraft weight.

Gas generator actuation eliminates heavy springs to reduce aircraft mass while ensuring reliable emergency turbine deployment.

Segmenting the lock bolt and slider with spherical retaining elements reduces actuator weight while maintaining unlocking reliability.