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A linear induction motor (LIM) is an alternating current (AC), asynchronous linear motor that works by the same general principles as other induction motors but is typically designed to directly produce motion in a straight line. Characteristically, linear induction motors have a finite primary or secondary length, which generates end-effects ...
Synchronous linear motors are straightened versions of permanent magnet rotor motors. A linear motor is an electric motor that has had its stator and rotor "unrolled", thus, instead of producing a torque , it produces a linear force along its length. However, linear motors are not necessarily straight.
German, a feasible linear induction motor described in patent form for driving trains or lifts. U.S. patent 782,312: 1935, Hermann Kemper: German, built a working linear induction motor 1945–1949, Eric Laithwaite: British, first full-size working model of linear induction motor
The RTV 31 at Earith, Cambridgeshire, during testing in May 1973. Tracked Hovercraft was an experimental high-speed train developed in the United Kingdom during the 1960s. It combined two British inventions, the hovercraft and the linear induction motor, in an effort to produce a train system that would provide 250 mph (400 km/h) inter-city service with lowered capital costs compared to other ...
An induction motor can be used as an induction generator, or it can be unrolled to form a linear induction motor which can directly generate linear motion. The generating mode for induction motors is complicated by the need to excite the rotor, which begins with only residual magnetization.
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1935 – First flight of the DC-3, one of the most significant transport aircraft in the history of aviation. [41] Hermann Kemper built a working linear induction motor. [42] 1939 - 20 June - First rocket powered aircraft, the Heinkel He 176, takes flight. 1939 – 27 August - First jet engine aircraft, the Heinkel He 178, takes flight.
1888 – An AC induction motor is featured in a paper published by Galileo Ferraris and is patented in the U.S. by Nikola Tesla. [11] 1892 – Rudolf Diesel patents the Diesel engine (U.S. patent 608,845). [12] 1899 – Ferdinand Porsche creates the Lohner–Porsche, the first hybrid vehicle.
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