Object moving thru a fluid medium

Actually I would be that OP and that OP would be me. It is really rude and unproductive to hijack threads with nonsense. There are many forums online for this kind of stupid commentary. Please stay within the limits of what the OP started the thread for.

 

@Patrick Hickey, as I said before, it's a pleasure to have a scientific conversation with you. My doubts now is, when a fairy is sublimated, in what becomes ?, in which phase exactly of its sublimation can give rise to the cavitation in the propeller. But, supposing that they are not sublimated, but become effervescent, does it harm this equally to the propeller ?. And most importantly, fairies often wear a sort of pointed hat (I do not know what it's called in English) which, I'm sure, crushes under pressure. Does the hat, crumpled by pressure, facilitate the onset of cavitation, or, to the contrary, retard it, or perhaps avoid it?
Gonzo, if you do not understand what you read, tell someone to explain it to you. Patrick Hickey is the OP and I suppose he can do with his thread what he wants. Thanks to you, we are having a very pleasant time. Thanks.

 

If there are remaining questions regarding hydrodynamics or aerodynamics, maybe it would be useful at this point to restate the question(s) so that it's clear to everyone what the discussion is about.

 

Two words that I always get mixed up in my head, "Peltast" and "Petard". A peltast was a skirmisher. Very light and nimble. He was always quick with the throw of the barb. His heavier armored opponents could not hope to match his agility and so they raised their shields against them rather than try to chase after and fight. Petard comes from the French. It means "to break wind". The phrase that it is most associated with is "don't petard into the wind." Otherwise you'll get your petard all over you.

 

Probably a good time to close this thread at this point since it appears to have drifted away from anything to do with boats.