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The Original Rocket Dungeon

On the durability of cardstock

22 Sep 2014, 01:05 UTC
On the durability of cardstock
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Well, as I was repairing a few creases in my Model Minutes XFLR-7, I detected a more severe issue. The inner motor/parachute tube had burned through over 50% around its circumference. This tube was raw cardstock. In retrospect, a coat of epoxy on the inside of the tube might have been a good idea. I'm a little surprised that, with such a huge gap in the tube, the outer shell neither popped nor exhibited any charring. I wonder if it was merely weakened and yesterday's hard 3-point landing jarred it loose? As opposed to the rocket laying over on touch down.This rocket has seen18 flights, 10 on C11s and 8 on D12s.I neglected to photograph the damage before I started repairs, but here's a pic from yesterday's launch.

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