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Ducted fans are used for propulsion or direct lift in many types of vehicle including aeroplanes, airships, hovercraft, and powered lift VTOL aircraft. The high-bypass turbofan engines used on many modern airliners is an example of a very successful and popular use of ducted fan design. The duct increases thrust efficiency by up to 90% in most ...
Most contemporary and pre-1921 sources agree that the bores of these early engines were between 100 and 105 mm (3.93 and 4.13 in), but strokes between 120 and 150 mm (4.72 and 5.90 in) are quoted. Most state the output of these engines at about 18 kW (24 hp) at around 1,400–1,600 rpm. Installed replica of an Anzani 3W Motor
Ray J. William Ray Norwood Jr. (born January 17, 1981), [1] known professionally as Ray J, is an American R&B singer, songwriter, television personality, and actor. Born in McComb, Mississippi, and raised in Carson, California, he is the younger brother of singer and actress Brandy Norwood. [3] In 2005, Ray J scored the Top 20 Billboard Hot 100 ...
A fractional-horsepower motor ( FHP) is an electric motor with a rated output power of less than one horsepower (745.7 W) (the term 'fractional' indicates less than one unit). There is no defined minimum output, however, it is generally accepted that a motor with a frame size of less than 35mm square can be referred to as a 'micro-motor'.
Recent high school graduate Suborno Isaac Bari, 12, plans to start studying math and physics at New York University in the fall, but he’s already got his ambitious sights set on beginning a ...
An internal fan-cooled electric motor (colloquially, fan-cooled motor) is a self cooling electric motor. Fan cooled motors feature an axial fan attached to the rotor of the motor (usually on the opposite end as the output shaft) that spins with the motor, providing increased airflow to the motor's internal and external parts which aids in cooling.
A fan coil unit ( FCU ), also known as a Vertical Fan Coil Unit ( VFC ), is a device consisting of a heat exchanger (coil) and a fan. FCUs are commonly used in HVAC systems of residential, commercial, and industrial buildings that use ducted split air conditioning or central plant cooling. FCUs are typically connected to ductwork and a ...
Costco Wholesale's new finance chief Gary Millerchip has made his first big move since taking the CFO role over from a predecessor who'd been in the job for nearly 40 years. The bulk retailer ...