SUBSIM Radio Room Forums - View Single Post - Sub physics

Dr.Sid · 11-19-07, 05:55 PM

Thanks .. many new things for me. Like the screw blades count. I guess it should be prime number .. so there are not subharmonics between main shaft and blades frequency.

So main tanks are completely filled with water, trim tanks are used to set buoancy to slightly negative and to keep sub level at low speeds. Main ballast tanks are blown from shallow depth.

And sub on the surface is slower because of turbulent flow and lower screw efficiency, both pretty good reasons (btw. I love the wake LA makes on the surface, still thinking about how to make it :rotfl:, so far no working idea)

11-19-07, 05:55 PM	#3
Dr.Sid The Old Man Join Date: May 2005 Location: Czech Republic Posts: 1,458 Downloads: 6 Uploads: 0	Thanks .. many new things for me. Like the screw blades count. I guess it should be prime number .. so there are not subharmonics between main shaft and blades frequency. So main tanks are completely filled with water, trim tanks are used to set buoancy to slightly negative and to keep sub level at low speeds. Main ballast tanks are blown from shallow depth. And sub on the surface is slower because of turbulent flow and lower screw efficiency, both pretty good reasons (btw. I love the wake LA makes on the surface, still thinking about how to make it :rotfl:, so far no working idea)