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Propellers are used to pump fluid through a pipe or duct, or to create thrust to propel a boat through water or an aircraft through air. The blades are shaped so that their rotational motion through the …

Jan 30, 2025 · Propellers convert engine horsepower into thrust by accelerating air and creating a low-pressure differential in front of the propeller. Since air naturally moves from high to low-pressure, …

Propeller, device with a central hub and radiating blades placed so that each forms part of a helical (spiral) surface. By its rotation in water or air, a propeller produces thrust owing to aerodynamic or …

This is similar to changing gears with a car or bicycle. A ship’s propellers create thrust in water in much the same way an airplane’s propellers create thrust in air. In order for a propeller blade to spin, it …

PROPELLER definition: 1. a device that causes a ship or aircraft to move, consisting of two or more blades that spin at…. Learn more.

Jan 21, 2023 · The propellers are long, thin, twisted pieces of wood which are spun at high speed. The propeller blade is shaped like an airfoil and there is a pressure difference created across the blade …

Definition of propeller noun in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

PROPELLER definition: a device having a revolving hub with radiating blades, for propelling an airplane, ship, etc. See examples of propeller used in a sentence.

Propellers are used on boats, submarines, and small aircraft. Propellers are simple, revolving hubs with blades placed evenly along the edges (usually 2 to 4 blades on a propeller, but more are possible).