
1) Air spinner 2) Aircraft propulsion component 3) Beanie topper 4) Boat mover 5) Estonian punk rock group 6) Mechanical device 7) Motorboat feature 8) Part of a launch 9) Propellor 10) Swedish invention 11) Thrust producer 12) Toy-plane airscrew
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https://www.crosswordclues.com/clue/propeller

1) Airscrew 2) Fin 3) Oar 4) Propellor
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https://www.crosswordclues.com/clue/propeller

A propeller is a type of fan that 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 a fluid (such as air or water) is accelerated behind the blade. Propeller dynamics can be modelled by both Bernoulli`s principle and Newton`s third.....
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http://en.wikipedia.org/wiki/Propeller
[aeronautics] Aircraft propellers or airscrews convert rotary motion from piston engines, turboprops or electric motors to provide propulsive force. They may be fixed or variable pitch. Early aircraft propellers were carved by hand from solid or laminated wood with later propellers being constructed from metal. The most modern propeller des...
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http://en.wikipedia.org/wiki/Propeller_(aeronautics)

• A propeller screw placed in front of the supporting planes of an aeroplane instead of behind them, so that it exerts a pull instead of a push. Hence, Tractor monoplane, Tractor biplane, etc. • (n.) One who, or that which, propels. • (n.) A contrivance for propelling a steam vessel, usually consisting of a screw placed in the ste......
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http://thinkexist.com/dictionary/meaning/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 ... [4 related articles]
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http://www.britannica.com/eb/a-z/p/121

The bladed part which is spun by the boat's engine to propel the vessel through the water.
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http://www.diy-wood-boat.com/Boating-terms.html

When a rats tail whips around in a circular motion to aid balance eg. when they feel insecurely held.
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http://www.encyclo.co.uk/local/21738

An airscrew that pushes air backwards as it rotates, thus pulling the aeroplane forwards
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http://www.encyclo.co.uk/local/22135
Pro·pel'ler noun 1. One who, or that which, propels.
2. A contrivance for propelling a steam vessel, usually consisting of a screw placed in the stern under water, and made to revolve by an engine; a propeller wheel.
3. A steamboat thus propelled; a screw steamer.
Propel...Found on
http://www.encyclo.co.uk/webster/P/174

A propeller is a contrivance for propelling a vehicle by the action of a revolving screw placed in the stern of a boat or frequently the front of an aircraft.
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http://www.probertencyclopaedia.com/browse/GP.HTM

[
n] - a mechanical device that rotates to push against air or water
Found on
http://www.webdictionary.co.uk/definition.php?query=propeller

An assembly of radially disposed blades with an airfoil shape that when rotated in air produce thrust.All propeller blade airfoils have a certain angle of attack range, in which the flow around the airfoil remains attached to airfoil's surface. While this is the case, the efficiency of the axial fan is satisfactory, but, when the angle of attack of...
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https://www.encyclo.co.uk/local/20687

A device commonly used to convert the power of an aircraft piston or turboprop engine into propulsive force; each blade is essentially a rotating wing, twisted and varying in section from root to tip to achieve maximum efficiency, which produces lift in a forward direction, i.e. thrust. In the 1940s propellers were often referred to as airscrews.
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https://www.encyclo.co.uk/local/20784
propellor noun a mechanical device that rotates to push against air or water
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https://www.encyclo.co.uk/local/20974

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 F...
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https://www.encyclo.co.uk/local/21221

The spinning thing that makes an airplane move forward. Often incorrectly used (by Otherpower.com also!) to describe a wind turbine Rotor.
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https://www.encyclo.co.uk/local/21463

a device having a revolving hub with radiating blades, for propelling an airplane, ship, etc. · a person or thing that propels. · the bladed rotor of a pump that drives the fluid axially. · a wind-driven, usually three-bladed, device that provides mechanical energy, as for driving an electric alternator in wind plants.
Found on
https://www.infoplease.com/dictionary/propeller
No exact match found.