Friday, July 15, 2011

How cellulose insulation, aka dog barf is made

[via R2K]

We rocketeers are interested because this is what we use to keep ejection charges from melting/burning our shock tethers and parachutes.  That and reusable Nomex, Kevlar, Nomex/Kevlar, or car airbag parachute protectors.  Or both dog barf and a parachute protector.  Or dog barf wrapped in Estes or Quest flameproof wadding.  That's one of my current favorites for rockets <3" in diameter.  Makes a flame resistant piston of sorts.  Often recovered near the rocket.  If recovered, often reusable (see photo below the video).