Wound rotor motors have reduced speed control and current ratings, but increased torque during startup. They have rotors with three wire windings terminated with slip rings, allowing for variable resistance during startup, reducing current consumption and increasing available torque. This makes them ideal for high inertia loads, such as large ventilation fans, conveyor belts, and […]
Rotor systems on helicopters provide lift and propulsion, with three main variations: articulated, semi-rigid, and rigid. Most helicopters use articulated systems, with hinges allowing individual blade movement. Rigid systems use flexes and elastomeric bearings, while semi-rigid systems have two blades that move together. A rotor system refers to the propeller-like mechanism that is attached to […]
The squirrel cage rotor is a key component in many induction electric motors, invented by Nikola Tesla in the 19th century. It consists of a metal shaft with a cage made of copper or aluminum rods, embedded in steel discs. When electric energy flows through the stator, it produces a magnetic field that spins the […]
A helicopter has two rotor shafts: one for the main rotor blade and one for the tail rotor. The main rotor shaft is attached to the engine via a gearbox, while the tail rotor shaft is driven from a gearbox that matches the speed of the main rotor. The tail rotor is crucial for maintaining […]
