(c.t.)F. Schultz-Grunow, August 1944 wrote: The first cycle influences the second cycle through waves E',
F', and G'. The fresh charge drawn in during the first cycle is
compressed and, as indicated in Part I, is also ignited by waves
E', because obviously no other phenomenon exists that might
serve to set off the explosion.
The second cycle begins with this ignition.
NOTE: Please disregard the pink color. It was
used for alignment purposes.
The compression waves E', merge and a shock wave is
formed in the flow field. It is travelling to the left so it is
known as a Q-shock.