Valveless Question for the Experts about combustion chamber

[Mitchell]

What is the between relationship combustion chamber volume and BTu's fuel (propane) consumed for a typical high performance valveless pulsejet? Can one of the experts (or anybody) here provide a graph or an equation?

Also, does this ratio depend upon engine size, or is it a constant?

Thanks much in advance. You guys have a great website here. Lots of good information.

Mitch