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The first XB-36 (42-13570) was rolled out of the Fort Worth factory on 8 September 1945, and took off from Fort Worth on its maiden flight on 8 August 1946. The B-36 was in production at Fort Worth until the last B-36J was rolled out on 14 August 1954; 385 of these were ultimately built. [8]
Demonstration hand-cranked magneto made circa 1925, on display at the Musée d'histoire des sciences de la Ville de Genève. 2kW Société de l'Alliance magneto generator for arc lamps, of around 1870. A magneto is an electrical generator that uses permanent magnets to produce periodic pulses of alternating current.
Vestas V47-660kW wind turbine at American Wind Power Center in Lubbock, Texas A wind turbine blade on I-35 near Elm Mott, an increasingly common sight in Texas Wind power has a long history in Texas. West Texas A&M University began wind energy research in 1970 and led to the formation of the Alternative Energy Institute (AEI) in 1977.
This is useful for large variable speed wind turbines, because wind speed can change suddenly. When a gust of wind hits a wind turbine, the blades try to speed up, but a synchronous generator is locked to the speed of the power grid and cannot speed up. So large forces are developed in the hub, gearbox, and generator as the power grid pushes back.
A permanent magnet synchronous generator is a generator where the excitation field is provided by a permanent magnet instead of a coil. The term synchronous refers here to the fact that the rotor and magnetic field rotate with the same speed, because the magnetic field is generated through a shaft-mounted permanent magnet mechanism, and current is induced into the stationary armature.
A 77-mph wind gust was clocked at Dallas-Fort Worth International Airport at 5:47 a.m., CDT, contributing to more than 600 flight delays and 270 cancellations at the airport, according to ...