SCREW PROPELLER Meaning and
Definition
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A screw propeller, also known as a propeller, is a device used in marine transportation to propel a ship or a boat through water. It typically consists of two or more specially shaped blades that are attached to a hub, forming a helical shape. The blades are often made of metal, such as bronze or stainless steel, and are designed to generate thrust by rotating in the water.
The screw propeller operates on the principle of Newton's third law of motion, which states that for every action, there is an equal and opposite reaction. As the blades rotate, they create a pressure difference between the front and back surfaces of the blades. This pressure difference generates a force that propels the vessel forward.
The efficiency of a screw propeller is determined by several factors, including the shape and size of the blades, the angle at which they are pitched, and the speed at which they rotate. The pitch of the blades refers to the distance the propeller would travel in one complete revolution, assuming there is no slip or loss of efficiency.
Screw propellers are commonly found in both large and small vessels, ranging from commercial ships and military vessels to recreational boats and yachts. They have been widely used since the 19th century and are considered the most common and efficient propulsion system for watercraft.
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• A screw placed in the stern of a ship and moved by steam, the action of which propels the vessel; the vessel thus propelled.
• A short shaft of iron furnished with a broad spiral wing fitted into the lower part of the stern of a ship, and made to revolve by steam, used in propelling a ship instead of paddles.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
Common Misspellings for SCREW PROPELLER
- acrew propeller
- zcrew propeller
- xcrew propeller
- dcrew propeller
- ecrew propeller
- wcrew propeller
- sxrew propeller
- svrew propeller
- sfrew propeller
- sdrew propeller
- sceew propeller
- scdew propeller
- scfew propeller
- sctew propeller
- sc5ew propeller
- sc4ew propeller
- scrww propeller
- scrsw propeller
- scrdw propeller
Etymology of SCREW PROPELLER
The word "screw propeller" has its origins in the combination of two different elements: "screw" and "propeller".
The term "screw" comes from the Old English word "screwen", which means "to twist" or "to turn". It was derived from the Proto-Germanic word "skruvis", which also means "screw" or "twist". The idea behind using the term "screw" for this type of propeller is that it resembles a twisted or spiraled shape, similar to a screw.
On the other hand, "propeller" is derived from the Latin word "propellere", which is a combination of "pro", meaning "forward", and "pellere", meaning "to push".
