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Schematic water brake on a dynamometer A 4-minute ‘how-it-works video’ tutorial explaining how engine-dynamometer water-brake absorbers work. A water brake is a type of fluid coupling used to absorb mechanical energy and usually consists of a turbine or propeller mounted in an enclosure filled with water. As the turbine or propeller turns ...
The idea of using a water brake to counteract the recoil of naval cannons was first suggested to the British Admiralty by Carl Wilhelm Siemens in early 1870s, but it took about a decade for other people (primarily Josiah Vavasseur) to commercialize the idea. [1] The usual recoil system in modern quick-firing guns is the hydro-pneumatic recoil ...
The schematic shows the most common type of water brake, known as the "variable level" type. Water is added until the engine is held at a steady RPM against the load, with the water then kept at that level and replaced by constant draining and refilling (which is needed to carry away the heat created by absorbing the horsepower).
US 2140752 Brake. La Brie 1938-12-20; US 2084216 V-type brake for motor vehicles. Poage Robert A. and Poage Marlin Z. 1937-06-15; US 2028488 Brake. Avery William Leicester 1936-02-21; US 1959049 Friction Brake. Buus Niels Peter Valdemar 1934-05-15; US 1954534 Brake. Norton Raymond J 1934-04-10; US 1721370 Brake for use on vehicles. Boughton ...
The former Heenan & Froude offices, Worcester, September 2007 A Heenan & Froude developed water brake dynamometer Heenan & Froude was a United Kingdom-based engineering company, founded in 1881 in Newton Heath, Manchester, England, in a partnership formed by engineers Richard Froude and Richard Hammersley Heenan.
Pages in category "Brakes" The following 29 pages are in this category, out of 29 total. This list may not reflect recent changes. ...
Frictional brakes are most common and can be divided broadly into "shoe" or "pad" brakes, using an explicit wear surface, and hydrodynamic brakes, such as parachutes, which use friction in a working fluid and do not explicitly wear. Typically the term "friction brake" is used to mean pad/shoe brakes and excludes hydrodynamic brakes, even though ...
Large Francis turbines are individually designed for each site to operate with the given water flow and water head at the highest possible efficiency, typically over 90% (to 99% [6]). In contrast to the Pelton turbine , the Francis turbine operates at its best completely filled with water at all times.