Search results
Results from the WOW.Com Content Network
Contra-rotating propellers are used on torpedoes due to the natural torque compensation and are also used in some motor boats. The cost of boring out the outer shafts and problems of mounting the inner shaft bearings are not worth pursuing in case of normal ships .
Vari-Prop, founded in 2004 by Larry Morgan, was an American manufacturer of composite propellers for homebuilt and light-sport aircraft. The company headquarters was originally located in Cottonwood, California and later in Beaverton, Oregon .
Turboprops have bypass ratios of 50–100, [9] [10] although the propulsion airflow is less clearly defined for propellers than for fans. [11] [12] The propeller is coupled to the turbine through a reduction gear that converts the high RPM/low torque output to low RPM/high torque. This can be of two primary designs, free-turbine and fixed.
Norwegian chess grandmaster Magnus Carlsen dropped out of the World Rapid and Blitz Championships on Dec. 27 after refusing to ditch his denim as "a matter of principle"
The V-Prop has been successfully fitted to many light aircraft in Europe, including Denmark, [6] but despite the EU's principle of free movement of goods, the LAA would not approve it for UK kit aircraft without further extensive testing. [7] In May 2013, Mattheus Strieker confirmed that the V-Prop went out of production some two years earlier.
Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.
Lightly loaded propellers for light aircraft and human-powered boats mostly have two blades, motor boats mostly have three blades. The blades are attached to a boss (hub), and while it can be a big boss, it should be as small as the needs of strength allow – with fixed-pitch propellers the blades and boss are usually a single casting.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!