Propellers TRIZ Cases

A locking disc and guiding base secure multi-rotor motors to arms without stator rotation, bolt loosening, or wiring entanglement.

Circumferential tapered magnets expand the retaining sleeve during assembly, improving rotor retention while helping reduce vibration and noise.

Using plug-in series hybrid-electric aircraft from smaller airports, this case cuts regional ground time, cost, noise, and emissions.

Nested fans inside the wheel base let a personal VTOL vehicle switch from driving to stable multidirectional flight without separate external thrusters.

A rotating shroud and fan switch one drive unit between wheel traction and fluid thrust, cutting multi-medium vehicle complexity and space use.

Rows of permanent magnets and bearing-mounted field generators drive a fan housing directly, using more magnetic field energy with less mechanical weight.

Electrically actuated memory alloy wires move and hold a sliding lock in small apparatuses, improving operability while avoiding continuous power draw.

A planetary and worm gear tilt actuator holds eVTOL propeller orientation during failures, improving control without added locking hardware.

A planetary and worm gearbox with integrated inverter enables compact, lightweight tilt actuation while preserving self-locking safety.

Equal and opposite PWM vectors in a dual inverter cut common-mode noise and maintain eVTOL motor drive under inverter faults.

Equal-and-opposite PWM in dual inverter circuits cuts common mode noise and improves eVTOL motor fault handling.

A duplex rotary EMA uses a common stage gearbox and brake assemblies to maintain output control when one actuator path jams.

An optimization-based control allocator meets eVTOL force commands while reducing rotor noise and balancing battery pack usage.