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Acid Chloride Preparative Route for Nylon-6,10, which is often used in the nylon rope trick. The nylon rope trick is a scientific demonstration that illustrates some of the fundamental chemical principles of step-growth polymerization and provides students and other observers with a hands-on demonstration of the preparation of a synthetic polymer.
Because rope has a long history, many systems have been used to specify the size of a rope. In systems that use the inch (Imperial and US customary measurement systems), large ropes over 1 inch (25.4 mm) diameter – such as those used on ships – are measured by their circumference in inches; smaller ropes have a nominal diameter based on the ...
This was typically cut down to an 8-foot (2.4 m) length and a 18-inch (460 mm) web loop (wrist strap) attached near the top end. This was used to form a sling loop and attached to an over 100-foot (30 m) length of 5/8-inch nylon rope. Three ropes with McGuire Rigs attached could be dropped from a UH-1 "Huey" helicopter, all on the same side. A ...
A test of "single" standard rope involves tying an 80 kg (176 pound) weight to the end of a length of rope. This weight is then dropped 5 meters (16½ feet) on 2.7 meters (9 feet) of rope, with the rope running over a rounded surface simulating that of a standard carabiner. This process is repeated until the rope breaks.
Parachute cord (also paracord or 550 cord when referring to type-III paracord) is a lightweight nylon kernmantle rope originally used in the suspension lines of parachutes. This cord is now used as a general purpose utility cord. This versatile cord was used by astronauts during the 82nd Space Shuttle mission to repair the Hubble Space ...
[4] The toggle rope was also used by US Army Rangers [5] and Australia in the Vietnam War as the fibre rope assembly, single leg, polyester fibre, 1in circ. 9ft long [6] [7] Later variants of the nylon rope lacked the toggle and was 10mm x 4m long and was stored in a 1 ft long coil when stashed away. Modern day issued variants are the Platatac ...
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