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According to The New York Times, the Army has started to "wikify" certain field manuals, allowing any authorized user to update the manuals. [4] This process, specifically using the MediaWiki arm of the military's professional networking application, milSuite, was recognized by the White House as an Open Government Initiative in 2010.
A grid coupling is composed of two shaft hubs, a metallic grid spring, and a split cover kit. Torque is transmitted between the two coupling shaft hubs through the metallic grid spring element. Like metallic gear and disc couplings, grid couplings have a high torque density. A benefit of grid couplings, over either gear or disc couplings, is ...
The coupling is defined by the groove count, the outer diameter of the cylindrical feature, the bottom angle of the grooves (to the axis of the cylindrical feature), and their depth. Hirth joints are designed as mating pairs and, unlike splines, there is no standardised off-the-shelf sizing system for them.
The balance lever coupling, also central buffer coupling with two screw coupling, is a coupler commonly used on narrow gauge railroads with tight curves. By swapping the pulling and pushing devices, the standard screw coupling used on standard gauge railroads became a center buffer coupling with one screw coupling on each side of the buffer.
Truppenführung ("Handling of Combined-Arms Formations") was a German Army field-manual published in two parts as Heeresdienstvorschrift 300: Part 1, promulgated in 1933, and Part 2 in 1934. The original German-language text, which is notable for its clarity, was prepared by a group led by Colonel General Ludwig Beck (1880–1944) (who was ...
The diagram from Beard's 1897 coupler patent [1]. Janney couplers were first patented in 1873 by Eli H. Janney (U.S. patent 138,405). [2] [3] Andrew Jackson Beard was amongst various inventors that made a multitude of improvements to the knuckle coupler; [1] Beard's patents were U.S. patent 594,059 granted 23 November 1897, which then sold for approximately $50,000, and U.S. patent 624,901 ...
A fluid coupling cannot develop output torque when the input and output angular velocities are identical. [7] Hence, a fluid coupling cannot achieve 100 percent power transmission efficiency. Due to slippage that will occur in any fluid coupling under load, some power will always be lost in fluid friction and turbulence, and dissipated as heat.
The Geislinger coupling is an all-metal coupling for rotating shafts. It is elastic in torsion, allowing it to absorb torsional vibration. [1] Unlike some other coupling types, it is not intended to compensate for high radial misalignment between shafts, but it can compensate for axial misalignments better than elastomer couplings.