Solarover12
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- Joined
- Dec 18, 2014
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More specifically Pyrodex in surgical tubing. I recently had a flight that failed to eject the parachute. I used two (one backup) 3g Pyrodex charges tightly packed in surgical tubing. A few months ago I flew the same rocket on identical charges (except they may not have been as tightly packed) and it worked flawlessly. (I also ground tested before this flight and 3g was more than enough) I cut open one of my older (very tightly packed) charges and the Pyrodex seemed to fuse into a solid ball. Could this effect the rate at which Pyrodex burns? My theory is based on the fact small granules burn faster than a solid piece of propellant. Can you pack BP or Pyrodex so tight you decrease the burn rate of your charges? So far this is my only theory as to why my previous flight failed a badly.