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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.A propeller is a type of fan which transmits power by converting rotational motion into thrust. A pressure difference is produced between the forward and rear surfaces of the airfoil-shaped blade, and air or water is accelerated behind the blade. Propeller dynamics can be modeled by both Bernoulli''s principle and Newton''s third law. The principle employed in using a screw propeller is used in sculling. It is part of the skill of propelling a Venetian gondola but was…mehr

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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.A propeller is a type of fan which transmits power by converting rotational motion into thrust. A pressure difference is produced between the forward and rear surfaces of the airfoil-shaped blade, and air or water is accelerated behind the blade. Propeller dynamics can be modeled by both Bernoulli''s principle and Newton''s third law. The principle employed in using a screw propeller is used in sculling. It is part of the skill of propelling a Venetian gondola but was used in a less refined way in other parts of Europe and probably elsewhere. For example, propelling a canoe with a single paddle using a "j-stroke" involves a related but not identical technique. In China, sculling, called "lu", was also used by the 3rd century AD