Hybrid Rocket Motor Aerospike Nozzle Tests

This is a combination of 3 test firings of an Aerospike nozzle for my Senior Project in Aerospace Engineering from California Polytechnic State University in San Luis Obispo. The test bed hybrid uses gaseous oxygen, GOX, and a 2“ dia Plexiglas tube as the solid fuel. The Oxygen is at 100psi. The first test run was not choked, which was expected for the throat area is ~10 times greater than what the ideal area should be. The ideal gap between the spike and the compression cowl needed to be .003“, yes