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propeller
(redirected from Propeller engine)

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propeller

Screwlike device used to propel some ships and aeroplanes. A propeller has a number of curved blades that describe a helical path as they rotate with the hub, and accelerate fluid (liquid or gas) backwards during rotation. Reaction to this backward movement of fluid sets up a propulsive thrust forwards. The marine screw propeller was developed by Francis Pettit Smith in the UK and Swedish-born John Ericson in the USA and was first used in 1839.

The airscrew is used to propel piston or turboprop airplanes.
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However, Christian Boller and Chen-Ming Kuo at the University of Sheffield, UK, have found the solution to these problems, claiming that a more efficient way to manoeuvre small aircraft is to move the propeller engines themselves.
Vertical-takeoff micro aircraft developed by Asian News International
For thrust, the blimp has two 210-horsepower propeller engines, similar to those found on small airplanes.
LESS OF A GAS HOG BLIMP'S SURPRISINGLY FUEL-EFFICIENT by Daily News (Los Angeles, CA)
TV presenter Grylls was preparing in the UK for last year's successful record breaking attempt to fly a paramotor - a flimsy chute powered by a backpack propeller engine - over the height of Mount Everest when disaster struck.
WALES: I was seconds from disaster; EVEREST ADVENTURER MAKES DRAMATIC ... by Daily Post (Liverpool, England)
 
 
 
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