Propeller
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Birth and death years unknown
A propeller (often called a screw if on a ship or an airscrew if on an aircraft) is a device with a rotating hub and radiating blades that are set at a pitch to form a helical spiral which, when rotated, exerts linear thrust upon a working fluid such as water or air. 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
* Calculated from Wikipedia data.
Accuracy is not guaranteed.
| External videos | |
|---|---|
 Construction of Wooden Propellers 1 2 3, NASA Langley |
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