Propellers TRIZ Cases

Multi-mode microwave waveguides steer blade-sensing signals by mode, improving reflection accuracy while cutting heavy engine cabling.

Equal and opposite PWM vectors let dual inverters share a stabilized DC bus, cutting eVTOL noise and vibration while preserving redundancy.

Thermoelectric elements create controllable temperature gradients to manage jet effects, improve laminar flow, and suppress turbulence.

Optimization-based control splits eVTOL thrust across propulsion units to spread noise frequencies and balance battery pack energy draw.

Fire-resistant lubricating oil is circulated through the eVTOL gearbox to cool components, maintain lubrication, and reduce leakage-related fire risk.

Offsetting the rotating ring mass toward the suction side counters thrust-induced blade-tip shift and keeps the rotor-stator magnetic gap stable.

Active inverter short circuits and propeller feathering redirect regenerated motor current during aircraft propulsion faults.

A hinged cockpit and wing assembly lets this VTOL biplane lift off as a quadcopter, then shift to efficient lower-noise cruise flight.

An electric-motor-driven second propeller lets an open-rotor turbomachine balance thrust, extract mechanical power, and ease compressor load.

Managed rotor power, wings, and a stabilizer balance nose-up thrust moments to cut drag and improve hybrid gyrodyne forward flight.