Olnico

I think all your ideas are good, however, I'm not sure if a rigid UAT alone will solve it


Cavitation happens when the pressure is so low, that the fluid evaporates. A UAT collapsing is an indication that the pressure is really low in the uat (either because of fluid velocity or by restrictions in the system). So, having the UAT be rigid instead of flexible is not changing the fact that the pressure is too low, which could still create cavitation. I understand that making the cross section smaller by collapsing it will make the fluid faster and make the pressure even lower, but my point is that the low pressure still exists (although maybe not low enough for cavitation) if the UAT is rigid.


However, it is still good to keep the UAT from collapsing. If you suddenly cut the power when the UAT is collapsed, the uat will also suddenly expand, momentarily starving the system, and since you are at idle, it might cause a flame out.

Interesting discussion....

Jack G