BobCox
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In the Feb 2009 issue of ROCKETS magazine , Dan Michael describes using a "chain stitch" to braid the shroud lines on a parachute. It was also mentioned in coverage of NARCON 2009 in the latest Sport Rocketry magazine.
The technique involves making a loop in the shroud lines, reaching through the loop to grab the lines above it, and pulling them back through the loop to create a new loop. This process is repeated until all the entire length is bundled.
When the chute is deployed, each loop unravels in reverse order, in a very orderly fashion. This braiding is supposed to keep the shroud lines from getting tangled, and unravels gradually to keep the chute from snapping open abruptly.
Has anybody else tried this technique?
Would it also work on non-elastic shock cords, like Kevlar or tubular nylon? It seems that the friction required to pull the loops apart would help to spread out the ejection energy and lessen the jerk at the end of the cord.
The technique involves making a loop in the shroud lines, reaching through the loop to grab the lines above it, and pulling them back through the loop to create a new loop. This process is repeated until all the entire length is bundled.
When the chute is deployed, each loop unravels in reverse order, in a very orderly fashion. This braiding is supposed to keep the shroud lines from getting tangled, and unravels gradually to keep the chute from snapping open abruptly.
Has anybody else tried this technique?
Would it also work on non-elastic shock cords, like Kevlar or tubular nylon? It seems that the friction required to pull the loops apart would help to spread out the ejection energy and lessen the jerk at the end of the cord.