[roc-chat] Re: Filling Cesaroni motors BP cavity with epoxy
- From: Gregory Lyzenga <lyzenga@xxxxxxxxx>
- To: roc-chat@xxxxxxxxxxxxx
- Date: Tue, 5 Sep 2017 16:36:48 -0700
On Sep 5, 2017, at 4:22 PM, Dave M (Redacted sender "muldavea" for DMARC)
<dmarc-noreply@xxxxxxxxxxxxx> wrote:
A while back, I had two Cesaroni motors that were not plugged but I didnt
want the motor to blow the BP charge. So I removed the BP and filled up with
epoxy. Problem was, in each case, it took maybe three attempts to launch.
Kept burning out igniters. Any thoughts?
In the process of removing the ejection charge, did you disturb or damage the
igniter pellet at the top of the grain? Since Cesaroni igniters are basically
just e-matches without a bunch of pyrogen, there is a pyrodex pellet at the top
of the motor to get the ignition going. If the epoxy ran onto that, it might
explain your problem. But on second thought that seems unlikely, since there
would be a delay grain between it and the ejection charge well. Hmmm… I’m not
sure...
- Greg
----------------------------------------------------------
Gregory A. Lyzenga <lyzenga@xxxxxxx <
mailto:lyzenga@xxxxxxx>>
Dept. of Physics, Harvey Mudd College (909) 621-8378
<tel:%28909%29%20621-8378>
Claremont, CA 91711-5990 mobile (626) 808-5314
<tel:%28626%29%20808-5314>
Other related posts:
