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## Slip Rings: 

Electromechanical and fiber-optic interface devices that transmit either electrical power or electronic data between a stationary element and a rotary element, allowing unencumbered 360-degree rotation. Applications are in aircraft, satellites and space vehicles, and in many types of industrial equipment including medical machinery. 

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## Gravity Probe B: 

Gravity Probe B is a satellite being built by Stanford University and Lockheed Martin Missiles and Space to test two unverified predictions of Albert EinsteinGLYPH<213>s general theory of relativity. The experiment will check minute changes in the direction of spin of four gyroscopes orbiting at a 400 mile altitude directly over the poles of the Earth. The gyros will measure how space and time are warped by the presence of the Earth and how the EarthGLYPH<213>s rotation drags space-time around with it. 

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## Plastics Market: 

Moog provides hardware for two types of plastic processing machinery. The first type is injection molding in which hot molten plastic is injected into cold molds using a hydraulic piston. After the part cools and solidifies, the mold is opened and the part is ejected. The second type is blow molding which begins by using heat to soften a plastic so that it can be extruded (pushed out) into a hollow tube called a parison. While the tube is still soft, a mold closes around the tube, pinching the top and bottom of the tube. Then, a pin is introduced and air is forced through the pin blowing the tube into the shape of the mold cavity. 

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## Aircraft Aftermarket: 

MoogGLYPH<213>s aircraft actuators are designed to provide flawless performance over time measured in decades. Periodically, the actuators need overhauling to bring them back to their original specifications. MoogGLYPH<213>s overhauls and repairs guarantee the use of original factory parts and assembly and testing by expert technicians. 

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