Energy Efficient Operational Measures TRIZ Cases

See how variable frequency drivers adjust compressor capacity in ground-based aircraft cooling

An in-wheel stator-rotor landing gear drives aircraft taxiing and regenerative braking to cut fuel use, towing loads, and airport dependence.

Brushless DC fan cooling cuts landing gear brake heat without heavy AC overspeed protection, improving aircraft turnaround.

A concentric stator-rotor wheel motor fits existing landing gear axles, enabling electric taxiing without major structural changes.

Leaf-spring wheel support, in-wheel electric drive, and attitude control curb biwheel gerbiling while preserving cockpit access and ride comfort.

Automatic brake pressure scaling counters single-engine taxi yaw, helping aircraft hold a straight path with less pilot input and fuel burn.

Spring-biased wheels and magnetic repulsion keep a maglev vehicle centered against guide walls from low to high speeds without active control.

Dual-sided magnets and skin-effect overlap raise eddy current wheel braking torque while cutting aircraft brake weight and bulk.

Hub-mounted drive pins transfer torque to an aircraft wheel without rim changes or bolt overload, preserving half-rim assembly integrity.

By moving the inflation valve toward the rim flange, this wheel layout frees space for drive members while preserving brake cooling and valve access.

Hub-mounted driving pins transfer torque without special rim features or bolt loading, simplifying aircraft wheel manufacture and assembly.

An in-wheel stator-rotor landing gear enables independent taxiing, auxiliary takeoff thrust, and regenerative braking with lower fuel use.

Direct rim-mounted electric drive, suspension, and a rear jockey wheel improve cockpit access while reducing gerbiling in a compact biwheel.

Brake commands progressively reduce landing gear drive torque during taxiing, smoothing aircraft speed control without disengaging e-taxi.

Brake pressure is automatically biased during single-engine taxi to counter uneven thrust yaw and keep aircraft deceleration and tracking stable.

Brake commands first reduce landing gear drive torque, giving aircraft e-taxi smoother deceleration without disengaging the drive system.

A self-driving assist vehicle couples to landing gear to supply taxi and takeoff thrust, cutting fuel use, battery weight, and noise.

Integrated rolling elements let aircraft freight carriers move easily in the cargo hold without heavy conveying systems, reducing weight and floor wear.

An offset rim inflation channel frees space for in-wheel drive members while preserving tire pressure access on aircraft wheels.

Controls aircraft taxi speed using estimated nose-tip speed, reducing the surging sensation pilots feel during turns.

A high-conductivity shield between the brake stack and wheel spreads braking heat evenly for faster cooling and lower tire fire risk.

Hub protrusions and slots secure the tire against relative rotation while exposing wear visually for timely replacement in cargo handling wheels.

A nested double-stage planetary reducer fits inside the wheel rim to deliver high reduction ratios for electric aircraft taxiing.

A nested double-stage satellite reducer delivers high wheel gear reduction inside the tight rim and hub space needed for electric aircraft taxiing.

A dual-ring reduction gear boosts wheel-drive reduction ratio for electric aircraft taxiing while fitting tight landing gear space.

A double-stage sun-planet-crown reducer raises wheel drive reduction ratio while fitting the tight rim and hub space of aircraft landing gear.

Alternating rollers with staggered ball-bearing guides raise torque capacity while reducing bearing wear, mass, and maintenance.

Selective pin retention lets aircraft roller gears keep reliable traction and power transmission while simplifying roller and pin replacement.

Wheel-mounted electric taxi drives let pilots realign aircraft with taxi lines and parking stops without tugs or engine restart.

Real-time wind and flight data are used to compute a minimum-distance approach trajectory that stabilizes aircraft energy and helps reduce go-arounds.

Ball bearing rotary guides replace wear-prone pads in a staggered roller gear element, extending service life while supporting high torque.

A split metal-plastic shroud directs airflow to the rotor, cutting aircraft wheel ventilation noise without adding mass.

Calculated intercept parameters help aircrew rejoin a preset VNAV descent path with less manual adjustment, fuel waste, and delay.

A hubcap-mounted planetary gear and clutch let a compact motor deliver taxi torque while isolating the wheel during takeoff.

A dual-solenoid brake adds spring drag braking during power loss, keeping aircraft ULDs controllable without free rolling or full lock.

By arranging multi-item payloads from weight, size, and center-of-gravity data, this case keeps UAV loads balanced to prevent drift and spin.

Holding the displacement actuator toward disengagement keeps the aircraft wheel drive actuator clear of the wheel if the lock fails.

A movable pinion and driven gear let landing gear wheels power taxiing, reversing, and pre-spin while cutting fuel use, noise, and brake wear.

A linear actuator engages or disengages a motor-driven pinion to power taxiing, pre-spin landing wheels, and support regenerative braking.

A predefined time-based speed profile improves low-speed aircraft taxiing accuracy and stability despite sensor limits, slope changes, and mass variation.

A compact roller gear and sprocket layout fits main landing gear space while enabling wheel spin-up, taxi traction, and easier roller maintenance.

A variable-diameter friction drive boosts landing gear wheel torque for aircraft taxiing, then disengages to avoid wear and retarding torque.

Digital ATC trajectory commands are timed and corrected from aircraft state data to cut operator workload in shared unmanned and manned airspace.

A deformable roller body and undulating contact surfaces transmit wheel torque with lower radial force, reduced stress, and longer service life.

A controlled speed difference and position sensing enable gradual gear meshing, cutting impact loads, engagement risk, weight, and cost.

Maintaining a non-zero speed difference and pausing at an intermediate position cuts gear impact forces in aircraft wheel drives.

Continuous power to the displacement actuator keeps the aircraft wheel drive actuator open if the lock fails, preventing wheel interference.

A magnet adds power-off drag braking to an aircraft cargo PDU, preventing roll-off while still allowing manual cargo movement.

A movable motorized wheel stays off the runway during takeoff, landing, and high-speed taxiing to avoid shock damage while preserving low-speed maneuvering.

A zinc-nickel coating and low-roughness sealing surface help landing gear gaskets resist corrosion without chromium-based treatments.

An electric motor built into the shock strut steers the wheel directly, removing torque links and gears to widen steering range and cut sticking risk.