What are propellers?

Some articles on propeller, propellers:

Molecular Propeller
... Molecular propeller is a molecule that can propel fluids when rotated, due to its special shape that is designed in analogy to macroscopic propellers it has several molecular-scale blades attached at a ... The molecular propellers designed in the group of Prof ... Molecular dynamics simulations show that these propellers can serve as efficient pumps in the bulk and at the surfaces of liquids ...
Aircraft Of The Battle Of Britain - Fighter Aircraft - Main Types: Hurricane, Spitfire and Bf 109 - Propeller Types
... By July 1940, more efficient de Havilland and Rotol constant speed propellers had begun replacing two-pitch propellers on front line RAF fighters ... The majority of the front line RAF fighters were equipped with these propellers by mid-August ...
Counter-rotating Propellers
... Counter-rotating propellers, found on twin- and multi-engine propeller-driven aircraft, spin in directions opposite one another ... The propellers on both engines of most conventional twin-engined aircraft spin clockwise (as viewed from the pilot seat).N1 Counter-rotating propellers generally spin clockwise on the left engine and counter-clockwise ... The advantage of such designs is that counter-rotating propellers balance the effects of torque and p-factor, eliminating the problem of the critical engine ...
Theodore Theodorsen - Selected Works
... of aerodynamic instability and the mechanism of flutter (1935) Characteristics of six propellers including the high-speed range (1937) Nonstationary flow about a wing-aileron-tab combination including aerodynamic ...
Charles Furnas - Specifications (Flyer III)
4-cylinder, inline engine, 20 hp (15 kW) Propellers Wrights' elliptical propellers later changed to Wrights' "bent-end" propellers propeller, 2 per engine ...