Observations from the fireing

As shown in the camera death video we ran the H2O2 Kerosene motor last weekend. The chamber pressure port failed causing local loss of coolant and subsequent failure.

Even with the short run it answered several questions I've had about H2O2 Kerosene motors.

The Motor was built around 3 1"x  7" metal monolith platinum coated catalysts.

This gives it a large contraction ratio 7" to 1.9" . It was also designed with an L* of 60.

Test conditions:
~200 PSI chamber pressure.
~ 6:1 O:F by weight
90% H2O2


Observations:

From the previous mono-prop runs its clear the cat pack is not working very well The metal monolith seems like it needs finer channels.

Even with a partially working cat pack ignition was almost instant. Reading the available literature ignition seems to be a strong function of  contraction ratio.

One of my personal questions was can you run an H2O2 motor like a traditional bi-prop where the peroxide is thermally decomposed in the chamber?  With a generous L* of 60 and contraction ratio of  almost 4 at a chamber pressure of 200 psi the answer is no.  There was clearly undecomposed peroxide in the plume.