18 years ago
Just had an interesting e-mail sent to me. This person had a rocket motor
F21-4w cato right at ignition. He was using an ML-12 that had been dipped with
very little pyrogen so as to fit inside the core. He reported that it appeared
as if the propellant had not even had a chance to burn. The bottom 1/3 of the
casing had blown apart.
Has anyone else had this happen in conjuction with our products? What is an
acceptable amount of clearence around the nozzle with the igniter installed so
that overpressurization does not occur? All comments and suggestions are
welcomed. Thanks for your input. Based on what I find out I may make a change
to the recommendation for motor application of the ML-12.