Re: [ERPS] Armadillo Nov 10

[Doug Jones]

John Carmack wrote:

http://www.armadilloaerospace.com/n.x/Armadillo/Home/News?news_id=181

Two videos included.

> Neither one pulled the little chute out of the bottom of the
> bag, resulting in a ballistic impact of the tower structure.
> The next test will use a thin Kevlar thread, which breaks at
> 10-20 pounds of force. It is a bit touchy increasing the force
> on this, because if it doesn't freely break after pulling the
> little chute out, the hot tower / rocket assembly will come
> back down on the main chute and burn a hole in it.

Go to your local parachute center and ask about "breakcord". It is basically a twine with reliable breaking strength, often used to ensure deployment sequences go in the correct order. Heck, pay a master rigger to look over your deployment system and give you advice.

Doug

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