Propeller theory is the science governing the design of efficient propellers. A propeller is the most common propulsor on ships, and on small aircraft...

propeller, also called an airscrew, converts rotary motion from an engine or other power source into a swirling slipstream which pushes the propeller...

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...

ratio is a useful non-dimensional quantity in helicopter and propeller theory, since propellers and rotors will experience the same angle of attack on every...

engine, (see above), but the crankshaft is fixed to the airframe and the propeller is fixed to the engine case, so that the crankcase and cylinders rotate...

entire propeller or rotor. One of the key difficulties lies in modelling the induced velocity on the rotor disk. Because of this the blade element theory is...

momentum theory is a theory that combines both blade element theory and momentum theory. It is used to calculate the local forces on a propeller or wind-turbine...

and memoranda dealing with aerofoil and propeller theory. His book, The Elements of Aerofoil and Airscrew Theory was the single most important instrument...

dynamics, momentum theory or disk actuator theory is a theory describing a mathematical model of an ideal actuator disk, such as a propeller or helicopter...

or no camber although in some cases the blade design was based on propeller theory. The machines, driven by steam turbines, were used for industrial purposes...

A turboprop is a gas turbine engine that drives an aircraft propeller. A turboprop consists of an intake, reduction gearbox, compressor, combustor, turbine...

Blade element theory Froude's law of similitude Froude number Froude efficiency Froude's experiments Froude–Krylov force Propeller theory Track transition...

object and enable high speeds. Applications include torpedoes and propellers, but in theory, the technique could be extended to an entire underwater vessel...

theory". Siegfried and Walter Günter were born on 8 December 1899 in Thuringia. Avid flight enthusiasts, at 16 they had developed their own propeller...

samples of their product which he pulls apart online for viewers; from propeller theory to electronic breakdowns at a circuit board level. Simpson's personal...

The chemtrail conspiracy theory /ˈkɛmtreɪl/ is the erroneous belief that long-lasting condensation trails left in the sky by high-flying aircraft are actually...

aeroelastic work, gave damping properties of structures and expanded general propeller theory. During World War II Theodorsen was called on for the analysis and...

most ubiquitous propeller example is a common outboard motor for a small boat. “Pusher configuration” describes the specific (propeller or ducted fan)...

are two theories that solve the parameters for axial fans: Slipstream Theory Blade Element Theory In the figure, the thickness of the propeller disc is...

A cyclorotor, cycloidal rotor, cycloidal propeller or cyclogiro, is a fluid propulsion device that converts shaft power into the acceleration of a fluid...

structural vibration. Propeller whirl flutter is a special case of flutter involving the aerodynamic and inertial effects of a rotating propeller and the stiffness...

capable of generating significantly more lift than drag. Wings, sails and propeller blades are examples of airfoils. Foils of similar function designed with...

annular airfoil and ducted propeller theory; propeller blade strength; hydrodynamic properties of blade sections; and propeller cavitation, ventilation and...

independently developed the blade element theory (BET), a mathematical process used to determine the behavior of propellers. Drzewiecki was born into Polish aristocratic...

common type of pump that essentially consists of a propeller (an axial impeller) in a pipe. The propeller can be driven directly by a sealed motor in the...

described momentum theory, both used in the systematic evaluation of propeller design efficiency and as components of blade element momentum theory. Robert became...

is propelled by one or more steam engines that typically move (turn) propellers or paddlewheels. The first steamships came into practical usage during...

cavitation inception and may occur behind the blade of a rapidly rotating propeller or on any surface vibrating in the liquid with sufficient amplitude and...

spoked rotating object will show it, such as helicopter rotors, aircraft propellers and car rims. In these recorded media, the effect is a result of temporal...

powered by four Brown-Curtis geared steam turbines, each driving one propeller shaft using steam provided by 24 Yarrow boilers. The battlecruiser's turbines...