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The rollers themselves may be made from wood, [2] aluminum alloy, [3] or plastic. [4] Aluminum alloy is usually a better choice because plastic rollers tend to bend and become misshapen from their regular cylindrical shape after use. Some rollers also have a concave cylinder shape (parabolic) to help keep the rider in the center of the rollers ...
A foam roller is a lightweight, cylindrical tube of elastomeric foam used for massaging one's own muscles. [1] The roller is placed between the target muscle and the ground, and is rolled back and forth, using body weight for pressure. It may be used for many reasons, including increasing flexibility, reducing soreness, and eliminating muscle ...
Olympia Looping, also known as Munich Looping, is a portable steel roller coaster owned and operated by R. Barth und Sohn Schaustellerbetriebe KG. [1] The ride was designed by Anton Schwarzkopf and Werner Stengel, and built by BHS. It is the largest portable roller coaster in the world, and the only one with five inversions.
A dual-tracked roller coaster is a roller coaster that consists of two tracks. They can be configured as racing, dueling, or Möbius loop roller coasters. Some dual-track coasters operate only one track side at a time, including Rolling Thunder and Colossus. Others may opt to run one side facing frontward and one side facing backward.
The vertical loop on Full Throttle is one of the world's tallest and largest at 160 feet (49 m) A vertical loop is one of the earliest and most common roller coaster inversions in existence. It is a continuous, upward-sloping section of track that eventually completes a 360-degree turn, inverting riders halfway into the element.
A conveyor belt is the carrying medium of a belt conveyor system (often shortened to a belt conveyor). A belt conveyor system consists of two or more pulleys (sometimes referred to as drums), with a closed loop of carrying medium—the conveyor belt—that rotates about them. One or both of the pulleys are powered, moving the belt and the ...
Modern tracks are built from modular chain links which together compose a closed chain. The links are jointed by a hinge, which allows the track to be flexible and wrap around a set of wheels to make an endless loop. The chain links are often broad, and can be made of manganese alloy steel for high strength, hardness, and abrasion resistance. [42]
The interior of the Apollo PLSS Diagram of the A7L PLSS and OPS, with interfaces to the astronaut and the Lunar Module cabin. The portable life support system used in the Apollo lunar landing missions used lithium hydroxide to remove the carbon dioxide from the breathing air, and circulated water in an open loop through a liquid-cooled garment, expelling the water into space, where it turned ...
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