When we were testing finocyl and star core sugar motors I used red RTV on the
ends to inhibit.
Sugar Shot to Space second 2-segment star unigrain propellant test
|
|
|
| | |
|
|
|
| |
Sugar Shot to Space second 2-segment star unigrain propellant test
This is the second test of the 3" diameter seven point Star 2-segment
unigrain. This was tested in Randy Do... | |
|
|
3 Oz. RTV Silicone - Red
|
|
|
| | |
|
|
|
| |
3 Oz. RTV Silicone - Red
This RTV silicone rubber is safe for use on all car models and is specially
formulated for high temperature appl... | |
|
|
Rick
On Thursday, November 2, 2017 3:51 AM, Tr Mu <tl01001101@xxxxxxxxx> wrote:
Would a high temp epoxy like JB weld work? It should bond well enough and it
shouldn't have to be that thick but will burn away at the edges to increase
core diameter as the motor burns.
Trevor Mushung
On Nov 2, 2017 6:34 AM, <spas@xxxxxxxxx> wrote:
wood glue?
tolerance.
Nikolai Nielsen
On Thu, Nov 2, 2017 at 11:39 AM, <spas@xxxxxxxxx> wrote:
Ray wrote:
I am looking at inhibiting the ends of a case bonded cylindrical sugarit
grain.
Does anybody here do this? If so, what do you use?
I've been considering high temperature silicone rubber but not sure if
will bond.
Bonding can be easely tested, but i beleive there can be a more
complicated problem here. If inhibitor at the grain end near the nozzle
does not enlarge its core diameter as fast as propellant, a piece of it
can come off and clog the nozzle.
I suppose I could just coat the ends with molten sugar withoutoxidizer
to
some arbitrary thickness and test it.
Maybe mixture of sugar and inert filler such as table salt will stand
better.
But it will contribute to thrust (and pure sugar too), so possibly it is
not suitable for ballistic test motor.
Serge Pipko
Kiev, Ukraine
http://serge77-rocketry.net
