Homemade Sub - Axle to engine/prop connection

Slayer_42 · 04-02-13, 04:18 AM

Hey there.
Im currently designing a submarine which i plan to construct later on in life when i have the funds required for such a project.
I was just wondering, how did the propeller axle pass through the stern of the boat on a real sub in a way that allows the fixture to be waterproof even at a high pressure?

cheers

U570 · 04-02-13, 04:43 AM

Have a read through this, it's the Training Notebook for the Oberon Class, and it has all details about the shafts, including seals.
http://www.hnsa.org/doc/oberon/propellers/index.htm#toc

Slayer_42 · 04-02-13, 04:29 PM

Beautiful! thanx alot mate. Now to design a compromise.... :P

Beardmoresam · 04-03-13, 09:27 AM

I'm sure there must have been vast improvements since the early 1900's.
If memory serves me well, the glands used on subs at the time were actually a bit faulty, although I can't remember a source for that info.

I think maybe something I read about T Class boats in the RN during the 40's.

edit -- http://www.go2marine.com/productcenters/shaftseals/

I think glands are a thing of the past now.

Slayer_42 · 04-03-13, 07:42 PM

awesome! have looked at that link and that has given me a good grounding from which to research different methods. I have designed a shaft seal which uses Turcon (A rubber like material capable of withstanding very low and high temperatures) seals. Not an original idea at all, copied it from this one

Just changed the design slightly to make it more cost effective.

Slayer_42 · 05-27-13, 09:28 PM

Not sure if this thread is still being viewed or not but i came up with an interesting idea. I plan on using a diesel engine and was thinking about the exhaust. And then i was thinking propeller shaft glands. What do you guys think about injecting the exhaust directly into a gland inside the shaft housing? this way the exhaust air and fumes etc will seal out any invading water.

04-02-13, 04:18 AM	#1
Slayer_42 Watch Join Date: Jan 2012 Location: Whangarei, New Zealand Posts: 27 Downloads: 31 Uploads: 0	Homemade Sub - Axle to engine/prop connection Hey there. Im currently designing a submarine which i plan to construct later on in life when i have the funds required for such a project. I was just wondering, how did the propeller axle pass through the stern of the boat on a real sub in a way that allows the fixture to be waterproof even at a high pressure? cheers __________________ Crash dive!!!! --- We're in shallow waters sir.... Hull damaged Radio destroyed Sonar destroyed Rudder damaged Diesel engines damaged

04-02-13, 04:43 AM	#2
U570 Grey Wolf Join Date: Sep 2011 Location: Planet Earth Posts: 867 Downloads: 89 Uploads: 0	Have a read through this, it's the Training Notebook for the Oberon Class, and it has all details about the shafts, including seals. http://www.hnsa.org/doc/oberon/propellers/index.htm#toc __________________ "Submariners are a bunch of intelligent misfits that somehow seem to get along, understand each other and work well together"- Anon

04-02-13, 04:29 PM	#3
Slayer_42 Watch Join Date: Jan 2012 Location: Whangarei, New Zealand Posts: 27 Downloads: 31 Uploads: 0	Beautiful! thanx alot mate. Now to design a compromise.... :P __________________ Crash dive!!!! --- We're in shallow waters sir.... Hull damaged Radio destroyed Sonar destroyed Rudder damaged Diesel engines damaged

04-03-13, 07:42 PM	#5
Slayer_42 Watch Join Date: Jan 2012 Location: Whangarei, New Zealand Posts: 27 Downloads: 31 Uploads: 0	awesome! have looked at that link and that has given me a good grounding from which to research different methods. I have designed a shaft seal which uses Turcon (A rubber like material capable of withstanding very low and high temperatures) seals. Not an original idea at all, copied it from this one Just changed the design slightly to make it more cost effective. __________________ Crash dive!!!! --- We're in shallow waters sir.... Hull damaged Radio destroyed Sonar destroyed Rudder damaged Diesel engines damaged

05-27-13, 09:28 PM	#6
Slayer_42 Watch Join Date: Jan 2012 Location: Whangarei, New Zealand Posts: 27 Downloads: 31 Uploads: 0	Not sure if this thread is still being viewed or not but i came up with an interesting idea. I plan on using a diesel engine and was thinking about the exhaust. And then i was thinking propeller shaft glands. What do you guys think about injecting the exhaust directly into a gland inside the shaft housing? this way the exhaust air and fumes etc will seal out any invading water. __________________ Crash dive!!!! --- We're in shallow waters sir.... Hull damaged Radio destroyed Sonar destroyed Rudder damaged Diesel engines damaged

04-03-13, 09:27 AM	#4
Beardmoresam A-ganger Join Date: Oct 2011 Posts: 74 Downloads: 434 Uploads: 0	I'm sure there must have been vast improvements since the early 1900's. If memory serves me well, the glands used on subs at the time were actually a bit faulty, although I can't remember a source for that info. I think maybe something I read about T Class boats in the RN during the 40's. edit -- http://www.go2marine.com/productcenters/shaftseals/ I think glands are a thing of the past now.