How do the shutter doors work on a fleet sub?

nsomnia · 02-19-16, 02:50 PM

I've spent the morning trying to model shutter doors on my Balao class (pampanito) submarine for project RedWater so that the shutter doors are operational.

Heres where I got to. Shutter door in red, muzzle door and tube in orange and the old tubes obviously below.

Looking at pics and the manual at maritime.org I know for sure the shutter doors are opened with or without power but have to be opened first, they are also however hinged to the muzzle door I beleive.

Does this mean the shutter doors run on some sort of track so that they can move inwards amidship at the forward end and swing open on the aft end hinged to the muzzle door, as well as having a hinged portion for any "play" in the system?

Or rather were the torpedo tubes angled in such a way that the shutters were simply hinged at both the muzzle door and near the end for the "play from the movement" and thus the fish would not hit the shutter door.

If anyone could draw out or find a video of shutter doors in operation or how they operate I would be very grateful.

For example in this picture of ss-228

It seems that they slide forward at the forward end (hence the cutouts in the hull) and would rotate inwards hinged at the muzzle door and the tube would be pointed maybe 3-5degrees outwards, thus making me think they are on rails for the play when opening the muzzle door.

But im confused since they have to be opened first, does that mea the muzzle door and shutters open at the same time, or am I mis-lead and they are not hinged together at all?

On maritime.org the pampatino manual shows this picture showing the hinge hole is for 'Shutter door arms"

nsomnia · 02-19-16, 04:59 PM

It appears _some_ were hinged but most ran on tracks at the fwd end, which is alot harder to animate, so I posted to some 3D art threads but I think I got this one solved.

Though the angle of the torpedo tubes I cant find anywhere, blueprints show htem angled out slightly but I would think they would be perfectly straight.

Sailor Steve · 02-19-16, 07:25 PM

Here are some pictures showing the outer doors in both open and closed positions. I'm sure somewhere in the text and photos you can find what you need.
http://maritime.org/doc/fleetsub/tubes/chap3.htm#3D

02-19-16, 02:50 PM	#1
nsomnia Weps Join Date: Nov 2012 Location: Canada Posts: 370 Downloads: 44 Uploads: 0	How do the shutter doors work on a fleet sub? I've spent the morning trying to model shutter doors on my Balao class (pampanito) submarine for project RedWater so that the shutter doors are operational. Heres where I got to. Shutter door in red, muzzle door and tube in orange and the old tubes obviously below. Looking at pics and the manual at maritime.org I know for sure the shutter doors are opened with or without power but have to be opened first, they are also however hinged to the muzzle door I beleive. Does this mean the shutter doors run on some sort of track so that they can move inwards amidship at the forward end and swing open on the aft end hinged to the muzzle door, as well as having a hinged portion for any "play" in the system? Or rather were the torpedo tubes angled in such a way that the shutters were simply hinged at both the muzzle door and near the end for the "play from the movement" and thus the fish would not hit the shutter door. If anyone could draw out or find a video of shutter doors in operation or how they operate I would be very grateful. For example in this picture of ss-228 It seems that they slide forward at the forward end (hence the cutouts in the hull) and would rotate inwards hinged at the muzzle door and the tube would be pointed maybe 3-5degrees outwards, thus making me think they are on rails for the play when opening the muzzle door. But im confused since they have to be opened first, does that mea the muzzle door and shutters open at the same time, or am I mis-lead and they are not hinged together at all? On maritime.org the pampatino manual shows this picture showing the hinge hole is for 'Shutter door arms" __________________ Current Project [ Operation Trident (Working Title: Project RedWater) ColdWar Subsim] :: Development Log w/ Dwnloads Last edited by nsomnia; 02-19-16 at 02:59 PM.

02-19-16, 04:59 PM	#2
nsomnia Weps Join Date: Nov 2012 Location: Canada Posts: 370 Downloads: 44 Uploads: 0	It appears _some_ were hinged but most ran on tracks at the fwd end, which is alot harder to animate, so I posted to some 3D art threads but I think I got this one solved. Though the angle of the torpedo tubes I cant find anywhere, blueprints show htem angled out slightly but I would think they would be perfectly straight. __________________ Current Project [ Operation Trident (Working Title: Project RedWater) ColdWar Subsim] :: Development Log w/ Dwnloads

02-19-16, 07:25 PM	#3
Sailor Steve Eternal Patrol Join Date: Nov 2002 Location: High in the mountains of Utah Posts: 50,369 Downloads: 745 Uploads: 249	Here are some pictures showing the outer doors in both open and closed positions. I'm sure somewhere in the text and photos you can find what you need. http://maritime.org/doc/fleetsub/tubes/chap3.htm#3D __________________ “Never do anything you can't take back.” —Rocky Russo