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A leadscrew (or lead screw), also known as a power screw [1] or translation screw, [2] is a screw used as a linkage in a machine, to translate turning motion into linear motion. Because of the large area of sliding contact between their male and female members, screw threads have larger frictional energy losses compared to other linkages.
The 42d Electronic Combat Squadron is a United States Air Force unit. Its current assignment is with the 55th Electronic Combat Group at Davis–Monthan Air Force Base , Arizona as a geographically separated unit from its parent wing, the 55th Wing at Offutt Air Force Base , Nebraska.
Lead frame of a surface-mount technology package. Most kinds of integrated circuit packaging are made by placing a silicon chip on a lead frame, wire bonding the chip to the metal leads of the lead frame, and covering the chip with plastic. The metal leads protruding from the plastic are then either "cut long" and bent to form through-hole pins ...
Clough Smith was founded in 1910 by electrical engineers Norman Clough and Sidney Smith, who moved into the manufacture of overhead power supplies for electrical tramways and trolleybuses. It designed and manufactured both overhead and rail supplies for many systems in Britain prior to World War I .
The lead determines the mechanical advantage of the screw; the smaller the lead, the higher the mechanical advantage. [20] The pitch is defined as the axial distance between the crests of adjacent threads. In most screws, called "single start" screws, which have a single helical thread wrapped around them, the lead and pitch are equal.
The mission of a United States Air Force electronic combat squadron is to use the electromagnetic spectrum (EM spectrum) to attack an enemy, or impede enemy actions by denying the use of the EM spectrum, whilst ensuring friendly forces free access to it.
On her maiden voyage, Empire Clough was a member of Convoy ON 100, which departed from Loch Ewe on 2 June 1942 bound for Boston and New York. At 03:40 on 10 June 1942, Empire Clough was torpedoed by U-94 with the loss of five crew.
The Acme thread was developed in 1894 as a profile well suited to power screws that has various advantages over the square thread, [note 1] which had been the form of choice until then. It is easier to cut with either single-point threading or die than the square thread is (because the latter's shape requires tool bit or die tooth geometry that ...
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