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The V-Prop is an automatic self-powering electronic variable-pitch propeller developed by Silence Aircraft. A contra-rotating vaned spinner ahead of the main spinner both powers a microprocessor and delivers data to instruct the blades to be adjusted automatically. The V-Prop is an automatic self-powering electronic variable-pitch propeller ...
Pusher configuration. The Wright Flyer, a “pusher” aircraft designed in 1903. In aeronautical and naval engineering, pusher configuration is the term used to describe a drivetrain of air- or watercraft with propulsion device (s) after the engine (s). This is in contrast to the more conventional tractor configuration, which places them in front.
t. e. Proposition 13 (officially named the People's Initiative to Limit Property Taxation) is an amendment of the Constitution of California enacted during 1978, by means of the initiative process, to cap property taxes and limit property reassessments to when the property changes ownership, as well as require a 2/3 majority for tax increases ...
The blade element theory (BET) is a mathematical process originally designed by William Froude father of Robert Edmund Froude (1878), David W. Taylor (1893) and Stefan Drzewiecki to determine the behaviour of propellers. It involves breaking an airfoil down into several small parts then determining the forces on them.
t. e. The 2016 Proposition 63, titled Firearms and Ammunition Sales, is a California ballot proposition that passed on the November 8, 2016 ballot. It requires a background check and California Department of Justice authorization to purchase ammunition, prohibits possession of high-capacity ammunition magazines over ten rounds, levies fines for ...
A propfan, also called an open rotor engine, open fan engine [1] [2] or unducted fan (as opposed to a ducted fan ), is a type of aircraft engine related in concept to both the turboprop and turbofan, but distinct from both. The design is intended to offer the speed and performance of a turbofan, with the fuel economy of a turboprop.
A pusher aircraft is a type of aircraft using propellers placed behind the engines. Pushers may be classified according to lifting surfaces layout (conventional or 3 surface, canard, joined wing, tailless and rotorcraft) as well as engine/propeller location and drive. For historical interest, pusher aircraft are also classified by date.
Propeller. A propeller (colloquially 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 a pitch to form a helical spiral which, when rotated, exerts linear thrust upon a working fluid such as water or air. [1]