(Ballistic Test) motor. It is designed to take up a 50 mm x 220
mm grain with a 20 mm core. It uses components of our smaller
burner which is used for propellant characterization with
end burning grains. In case of an overpressurisation, grooved
bolts will release the end closures (happened with the first of
two firings in the occasion of our meeting last saturday due a
defective grain). The case itself is rated up to 50 MPa.
close-up of the igniter used in the BATES motor. We designed the
igniter not only to release heat, but also pressurizes the chamber
to an appropriate level. A small squib initiates a charge flash
powder, black powder and pellets. With this igniter the motor
needs only 20 ms to reach its full working conditions!