Characterization Motor

A simple end burning motor with different nozzles can be used to collect burn rate / data points for propellant characterization. An example of such a motor is shown below.

Characterization test motor, end burning config. Note the ports in the top bulkhead for interchangeable nozzles and a pressure transducer.

The use of a test motor like this is based on Jim Lanier's work.

See Propellant Characterization for what to do with the data once you have it, and Data Acquisition for instrumenting the test.