I did some simple modifications to the SStS DDS BPS Motor in anticipation of an upcoming firing. This is a nice looking motor and I can't wait for the firing...should be cool! Here is a photo of one of the parts in the lathe and the same part being test fitted in the motor casing.
Sunday, April 22, 2012
Thursday, April 19, 2012
Tuesday, April 17, 2012
mandrel and a way that would also reduce the risk of having to deal with a stuck mandrel. The above image
illustrates what I came up with. I'm currently making a version of this jig that has several features added in so that I can actually try to cast a grain with this set-up. The most notable features are a star shape on the base that helps seal the bottom so that propellant doesn't seep under and into the core, a hole in the center of the base to ease the installation of the tape, and a secondary top cap which helps to keep everything centered.