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Wind turbine components : 1- Foundation, 2- Connection to the electric grid, 3- Tower, 4-Access ladder, 5- Wind orientation control (Yaw control), 6- Nacelle, 7- Generator, 8- Anemometer, 9- Electric or Mechanical Brake, 10- Gearbox, 11- Rotor blade, 12- Blade pitch control, 13- Rotor hub. Wind turbine design is the process of defining the form ...
Spinner (wheel) The spinner on automobile wheels historically refers to knock-off hub nuts or center caps. They may be the actual, or intended to simulate, the design used on antique vehicles or vintage sports cars. A "spinner wheel" in contemporary usage is a type of hubcap or inner wheel ornament, that spins independently inside of a wheel ...
Seth Babbitt (father) Elizabeth Babbitt (mother) Sarah "Tabitha" Babbitt (December 9, 1779 - 10 December 1853) was a Shaker credited as a tool maker and inventor. Inventions attributed to her by the Shakers include the circular saw, the spinning wheel head, and false teeth. She became a member of the Harvard Shaker community in 1793.
The Crookes radiometer (also known as a light mill) consists of an airtight glass bulb containing a partial vacuum, with a set of vanes which are mounted on a spindle inside. The vanes rotate when exposed to light, with faster rotation for more intense light, providing a quantitative measurement of electromagnetic radiation intensity.
e. In classical mechanics, a reactive centrifugal force forms part of an action–reaction pair with a centripetal force . In accordance with Newton's first law of motion, an object moves in a straight line in the absence of a net force acting on the object. A curved path ensues when a force that is orthogonal to the object's motion acts on it ...
In the case of ball bearings, the bearing has inner and outer races and a set of balls. Each race is a ring with a groove where the balls rest. The groove is usually shaped so the ball is a slightly loose fit in the groove. Thus, in principle, the ball contacts each race at a single point.
The mecanum wheel is an omnidirectional wheel design for a land-based vehicle to move in any direction. It is sometimes called the Swedish wheel or Ilon wheel after its inventor, Bengt Erland Ilon (1923–2008), [1] who conceived of the concept while working as an engineer with the Swedish company Mecanum AB, and patented it in the United ...
The chakram ( Sanskrit: cakra, cakram; Punjabi: cakkra, cakkram) is a throwing weapon from the Indian subcontinent. It is circular with a sharpened outer edge and a diameter of 12–30 cm (4.7–11.8 in). It is also known as chalikar [1] meaning "circle", and was sometimes referred to in English writings as a "war- quoit ".