Category Archives: MECHANICAL

It contains over 300 mechanical technical paper topics with details and many latest technical paper topics.

Introduction to Airfoil

An airfoil (in American English) or an aerofoil (in British English) is the shape of a wing or blade in cross section. An Airfoil shaped body moved through a fluid produces an aerodynamic force. The component of this force perpendicular to the direction of motion is called lift

Ultrasonic Motor

An ultrasonic motor is a type of electric motor formed from the ultrasonic vibration of a component, the stator, placed against another, the rotor or slider depending on the scheme of operation (rotation or linear translation). Piezoelectric ultrasonic motors are a new type of actuator. They are characterized by high torque at low rotational speed, simple mechanical design and good controllability. They also provide a high holding torque even if no power is applied.