Cut off a piece of liner tube, cut a wide enough slice out from the that
piece's perimeter so that you can fit the closed up piece snuggly inside the
liner tubes and bond in place with plenty of HTPB/Tepanol/curative mix. You
can hopefully join the 2 liner pieces together piece by piece so there's no
stretching or reaching and keep in mind the chances of hot gas getting to
this point is quite remote, especially if there's minimal clearance between
the liner and casing ie. the casing wall will absorb lots of heat fast, the
flow will be extremely momentary and minimal and if both ends of the
liner-casing clearance were exposed, the middle section should stay quite
stagnant anyway.
Troy
-----Original Message-----just
From: arocket-bounce@xxxxxxxxxxxxx [mailto:arocket-bounce@xxxxxxxxxxxxx]
On Behalf Of John Stoffel
Sent: Friday, 24 August 2018 12:51 PM
To: arocket@xxxxxxxxxxxxx
Subject: [AR] Re: Sealing phenolic liner joints
For the bonding, you don't need to actually put the liners into the tube,
into a short enough length where you can get it more easily. If you cantake a
piece of pipe the same inside diameter, and cut it in half, then you couldtry to
possibly use those halves a molds.
Crack it open, lay in the liner, but the joints with whatever (I'd maybe
scarf them and glue with epoxy) aand then put the other half on, clamp itshut
and put in the bladder in the inside to push out.Or if
The scarf could be 3/4" long, or possbily longer if you can make it work.
the liners are already in tube form, just a short section of the outsideneeds to
be supporting the joint when you butt them and glue them together.
John