Building a Stram axial pressure jet engine

[roland2001]

Without going into a great deal of commentary I'm posting the 1/4 scale sketch of what I came up with.
The total combustion volume, jetting, nozzle, number of coils all remain unchanged.
What is different: The combustion chamber is ~ 5/8" longer.
This change has been made because it is assumed there will be no combustion of the fuel air mixture until it meets the flame holder. This volume = ~ 12 cubic inches.
The flameholder is 76% open area crimp woven heavy gauge 304 SS wire.
The Stram concept 3rd stage is also made of 304 SS....
and measures 2.5" OD and 2.402" ID. The length of this tube is ~ 4.875".
The second stage intake is 2.125" OD and ~ 2.0" ID
The first stage is 1" ID
I haven't built this engine yet, however, I assume that as the engine is throttled up from idle, it will transition quickly from "pulse mode" to "laminar combustion mode". Ostensibly, one might consider this an ejector ramjet engine, but because the super heated fuel comes in at the front of the engine, I'd call it an "Injector" ramjet engine.
The sketch of the engine is below in reply section.

[roland2001]

OK here is the 1/4 scale sketch of what might be considered the Stram configuration

[roland2001]

Flameholder for the Stram type engine.