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Ward Leonard control, also known as the Ward Leonard drive system, was a widely used DC motor speed control system introduced by Harry Ward Leonard in 1891. In the early 1900s, the control system of Ward Leonard was adopted by the U.S. Navy and also used in passenger lifts of large mines.
A governor, or speed limiter or controller, is a device used to measure and regulate the speed of a machine, such as an engine.. A classic example is the centrifugal governor, also known as the Watt or fly-ball governor on a reciprocating steam engine, which uses the effect of inertial force on rotating weights driven by the machine output shaft to regulate its speed by altering the input flow ...
Visualising the inner angle as 'latitude' and the outer as 'longitude', it can be seen that for an individual CMG there were 'blind spots' with radius 10 degrees of latitude at the 'North and South poles', and an additional 'blind strip' of width 10 degrees of 'longitude' running from pole to pole, centred on the line of 'longitude' at plus 135 ...
This article provides a list of operational and under construction (or approved) high-speed rail networks, listed by country or region. While the International Union of Railways defines high-speed rail as public transport by rail at speeds of at least 200 km/h (124 mph) for upgraded tracks and 250 km/h (155 mph) or faster for new tracks, this article lists all the systems and lines that ...
The advanced processor-based speed control algorithms found in PTC systems claim to be able to properly regulate the speed of freight trains over 5,000 feet (1,500 m) in length and weighing over 10,000 short tons (9,100 t), but concerns remain about taking the final decision out of the hands of skilled railroad engineers.
A SNCF's low-cost Ouigo TGV train passes at high speed in the direction of Paris on June 2, 2021. More than 400 train passengers narrowly avoided harm on Christmas Eve after a driver jumped from ...
Gasoline automobile engines typically will have a redline at between 6000 to 7000 rpm. The Gordon Murray Automotive T.50 has the highest redline of a piston-engine road car rated at 12,100 rpm. The Renesis in the Mazda RX-8 has the highest redline of a production wankel rotary-engine road car rated at 9000 rpm.
The trains would run faster than those on other high-speed lines in the U.S., including Amtrak's Acela between Boston and Washington, D.C., which can top 150 mph (241 kph).