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Old 03-09-2019, 01:06 AM
Les Les is online now
BAR 13790
 
Join Date: May 2008
Location: Johnson City, NY
Posts: 524
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Jerry - I owe you an apology

I took the rocket (without fins) and set up a static test with a 30" thin mil chute. Had to do some jury rigging to install a 24mm load (CTI E31). CTI states their 24mm loads have 0.6g of BP for the ejection charge. I strapped the rocket to some benches, and 3 - 2 - 1 - 0 and nothing. Bad ignitor. Replaced it and tried again.

So what happened? I expected the charge to go off but the cone to stay on, or even if it came off the chute to stay in the tube.

What really happened? The chute and cone came off quite energetically!

Now the cone is a bit on the loose side, but I think good enough to satisfy a safety inspection.

I did not try a 29mm (which comes with 1.2g of BP). I guess my options are to fly with 24mm or to use a 29mm and remove some powder. I can also run a test case with a 29mm - I ran out of time today....
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