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The mechanical disadvantages are largely those of added complexity. Undriven wheels require a brake shaft. Mounted inboard, it is more difficult to arrange for cooling air to flow over the rotor and air ducting can be required to prevent brake fade. Inboard brakes also affect anti-pitch suspension geometry.
Brake fade and rotor warping can be reduced through proper braking technique; when running down a long downgrade that would require braking simply select a lower gear (this is required for many trucks on steep grades in the U.S.). Also, periodic, rather than continuous application of the brakes will allow them to cool between applications.
On automobiles, disc brakes are often located within the wheel A drilled motorcycle brake disc. The development of disc-type brakes began in England in the 1890s. In 1902, the Lanchester Motor Company designed brakes that looked and operated similarly to a modern disc-brake system even though the disc was thin and a cable activated the brake pad. [4]
The ability to resist wear due to friction, but not to the extent that rotor wear occurs more quickly than brake material is sacrificed. [5] [6] The ability of the material to provide smooth and even contact with the rotor or drum, instead of a material that breaks off in chunks or causes pits, dents, or other damage to the surface in contact ...
Regenerative and friction braking must both be used, creating the need to control them to produce the required total braking. The GM EV-1 was the first commercial car to do this. In 1997 and 1998, engineers Abraham Farag and Loren Majersik were issued two patents for this brake-by-wire technology.
A transmission control unit (TCU), also known as a transmission control module (TCM), or a gearbox control unit (GCU), is a type of automotive ECU that is used to control electronic automatic transmissions. Similar systems are used in conjunction with various semi-automatic transmissions, purely for clutch automation and actuation.
Main rotor disk vortex interference Weathercock stability Tail rotor vortex ring state. Loss of tail-rotor effectiveness (LTE) [1] occurs when the tail rotor of a helicopter is exposed to wind forces that prevent it from carrying out its function—that of cancelling the torque of the engine and transmission. Any low-airspeed high-power ...
A jacking gear (also known as a turning gear) is a device placed on the main shaft of an engine or the rotor of a turbine. The jacking gear rotates the shaft or rotor and associated machinery (such as reduction gears and main steam or gas turbines), to ensure uniform cool-down. Without turning, hogging or sagging can occur.
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