Table of Contents
BackgroundThroughout our design process, we were recommended many times to use phenolic as a chamber insulation, but we could not determine what grade of phenolic or how much (thickness) we needed for proper insulation. A series of non-destructive and destructive tests were carried our to determine these parameters before purchasing supplies.
Test Procedure & SetupThrough non-destructive we aimed to determine the thermal properties of the samples since they were not found in preliminary research. Specifically, mass, density, and specific heat needed to be determined. For the destructive tests, we wanted to determine how thick of tube we would need in the pre/post combustion chamber. For this we will blast the samples with a torch, and record temperature data on the opposite side of the sample. Further descriptions of these tests can be found in the documentation below:
After gathering more information about the different grades of phenolic, it was shown that the LE and CE grades were fairly similar, and out-performed the Garolite G10/FR4 sample. The LE and CE phenolics had a lower density, yet higher specific heat, which made them favorable to use over the more expensive Garolite.