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The paddle wheel is a large wheel, generally built of a steel framework, upon the outer edge of which are fitted numerous paddle blades (called floats or buckets). The bottom quarter or so of the wheel travels underwater. Rotation of the paddle wheel produces thrust, forward or backward as required.
The paddle wheel is a device for converting between rotary motion of a shaft and linear motion of a fluid. In the linear-to-rotary direction, it is placed in a fluid stream to convert the linear motion of the fluid into rotation of the wheel. Such a rotation can be used as a source of power, or as an indication of the speed of flow.
The paddle steamer Piemonte (1904) operates on Lake Maggiore, and sister paddle steamers Patria (1926) and Concordia (1926) operate on Lake Como. Former paddle steamers Italia (1909) and Giuseppe Zanardelli (1903) operate on Lake Garda; their steam engines, unlike in the ships that sail on lakes Como and Maggiore, were replaced with diesel ...
Rotating paddle level sensors are a very old and established technique for bulk solid point level indication. The technique uses a low-speed gear motor that rotates a paddle wheel. When the paddle is stalled by solid materials, the motor is rotated on its shaft by its own torque until a flange mounted on the motor contacts a mechanical switch.
Magnets in the paddle spin past the sensor. The electrical pulses produced are proportional to the rate of flow. Paddle wheel flowmeters (also known as Pelton wheel sensors) consist of three primary components: the paddle wheel sensor, the pipe fitting and the display/controller. The paddle wheel sensor consists of a freely rotating wheel ...
The side-wheel paddle steamer SS Great Western, the first purpose-built transatlantic steamship, on its maiden voyage in 1838 The American ship SS Savannah first crossed the Atlantic Ocean arriving in Liverpool, England, on June 20, 1819, although most of the voyage was actually made under sail.
A sail switch, vane switch or flow switch is a mechanical switch that is actuated on or off in response to the flow or non-flow of a fluid such as air or water. [1] A sail switch typically operates through the use of a paddle or a diaphragm which gets displaced due to the force of fluid or air moving past it.
Three phase squirrel cage induction motors can also be used as generators. For this to work the motor must see a reactive load, and either be connected to a grid supply or an arrangement of capacitors to provide excitation current. For the motor to work as a generator instead of a motor the rotor must be spun faster than its stator's ...