Franklin Fibre has tubes in paper phenolic and other compositions in various sizes and wall thicknesses:
http://www.franklinfibre.com/phenolic_paper_tubes.html "...available in diameters ranging from .118" ID to 49.2" ID" (!)We've used it both as fuel cartridge casings and as an X-ray translucent cartridge/pressure vessel (thick-walled, of course!) for our hybrid rocket work.
Eric At 09:40 AM 10/17/2013, Robert C Steinke wrote:
I got some paper phenolic liners custom made by Precision Paper Tube (pptube.com). They are 5" ID, 5.25" OD, .125" wall, and 36" long. When I bought a batch of 5 they were about $200 each. Make sure to specify convolute wound, not spiral wound.Daryle, I still have some left if that size would work for you. Bob Steinke On Wed, 16 Oct 2013 12:56:14 -0700 Daryle Dismukes <daryled@xxxxxxxxx> wrote:Those of you who are working with fuel grains in the 150mm / 5.5-6 inch diameter range, what are you using for your motor cases and liners? The largest I've done before is 98mm, and I used as much off the shelf Aerotech hardware as I could. Now I need to do something larger in a hurry at work and I'm hoping to find a source of pre-made carbon phenolic tubes between 5.5 to 6 inches in diameter. Any sources or ideas? Other things to try? -Daryle
------------------------Eric Boyer Assistant Director, High Pressure Combustion Lab Research Associate Department of Mechanical and Nuclear Engineering
(814) 863-2264 Penn State University jeb19@xxxxxxx University Park, PA 16802
