Is there an exhaust mod? - Page 3

Ubåtskapten · 04-19-07, 01:55 PM

Nice work, looking forward to the final mod.

Here are some pictures of diesel exhaust fumes from different submarines if it might be of any help. Even though the smoke on these images probably is when the engines is on high rpm. At least I did not find any images of a WWII U-boat with visible diesel smoke.

http://www.dutchsubmarines.com/pictu...2_sea_1988.jpg
http://www.geocities.com/CapeCanaver...2/surfaceb.jpg
http://www.olgoat.com/substuff/mik66.htm

04-19-07, 03:12 PM

Wow, That 1st link is what I was looking for!
That's kinda what I was seeing in my head.
Thanks!!

If I can find away to attach it to the engine controls
it could possibly be made to change.
As I've never really dug into the Subs,
I don't know at this point.

Right now,
If a wave washes over the deck the smoke stops,
once above the water line it kicks out a good puff then
settles down to a bit less then the picture shows.

That looks kinda cool, but still needs cut back.

Also, even at full stop the smoke is there.
I am looking into tieing into throttle control.
but no promises at this point.

Oh, and before it's asked,
I can do the SH4 Subs the same way.

Paajtor · 04-19-07, 03:17 PM

Quote:

Originally Posted by privateer

This detail shows exhaust exiting on port and starboard sides.
http://www.uboatarchive.net/U-570Plate16.htm

And the stock skins have those openings painted in place.

Then will it also be possible, to show exhaust-smoke from only 1 running engine (ie, when you're lying stationary, in recharge-mode)?

Which diesel would run in recharge-mode anyway? Did they have the choice between either one of the 2, or would the gears only allow 1 particular engine?

04-19-07, 03:31 PM

I'll be honest,
I don't know if I can tie it to helm control,
props or what at this point.
Right now,
Any time on surface you have smoke.
That part was easy.
Now I have to dig into the dats to see if I can gain
the type of control that would really stand it out.
The Sub stuff is all new turf for me,
so it'll take a few days studying.

GT182 · 04-19-07, 07:39 PM

More power would deffinately mean more smoke, and it would be darker. But as Privateer says .... "I have to dig into the dats to see if I can gain
the type of control that would really stand it out."

If he can't gain the control he wants, to me any smoke coming from the exhausts would be fine. It's something never seen before in SHIII for the Uboats. The surface ship's smoke was the only thing that was ever modded successfully. But somehow I think he'll find a way to make it all happen as he wants.

Ubåtskapten · 04-19-07, 07:57 PM

I'm not especially familiar with the file structure but would'nt it be possible to make the amount of smoke vary the same way the engine sound changes when you order an other speed? if for example the smoke graphic-files could be linked with the sound or speed setting-files somehow. :hmm:

GoldenRivet · 04-20-07, 01:19 PM

nice work privateer

i have been out of town and havt not been able to keep up with this thread... but i have a couple of things you might consider that i would like to add to the dicussion if i may.

Your post about the smoke going away when decks awash and when submerged is right on (obviously) but you might alos consider that the U-boat would likely only make a substantial or noticable exhaust smoke when running the diesels at ahead full or ahead flank.

anyone who has run a diesel engine knows... you cant really see a lot of exhaust gasses exiting the pipe unless you really throttle it to her. Think of a mack truck or something passing you on the highway...when the driver puts more throttle to it is when you really see the most smoke, also when starting from a dead stop. as the engine is turning out high RPM at these times... but at lower RPM such as when idle or when cruising the exhaust is virtually invisible.

Im sure the big U-boat diesels would behave in quite the same way.

Just a thought.

EDIT: i see this has been discussed a little bit already. thats what i get for skipping ahead ;-) perhaps you could tie it to speed or RPM or something similar?

Mush Martin · 04-20-07, 01:22 PM

My two cents

does AI percieve it as fog and have difficulty hitting you
if the smokescreen is between you and the enemy?

M

Maraz · 04-20-07, 01:40 PM

Quote:

Originally Posted by Mush Martin

My two cents

does AI percieve it as fog and have difficulty hitting you
if the smokescreen is between you and the enemy?

M

No, as far as I understand this will only be eye candy. Not easier, nor more difficult, for the AI to spot you.

Maraz

sergbuto · 04-20-07, 01:48 PM

Quote:

Originally Posted by GoldenRivet

I have noticed in several photos and books and movies the very light exhaust smoke coming from the stern of the U-boats especially when the diesels are turning out high RPM. its not a lot, but it is noticable.

To me, most of photos of subs going with significant speed show no noticable smoke at all. Therefore, noticable smoke probably means some kind of trouble with the engine (not necessarily serious but simply weared).

Rubini · 04-20-07, 02:43 PM

Good work Privateer!

As Sergs said this smoke can't be so much visible. But will be great to have a very discrete one that could be a bit more noticiable (only a bit) when the uboat is in "high" speed surfaced! The colour must be a white gray I guess.
The trick is to make the smoke only a slight noticeable one.
This will be a great addition to sim feeling.

GoldenRivet · 04-20-07, 02:49 PM

see here... http://www.subsim.com/radioroom/show...874#post506874

one video shows a very brief split second filming of the aft of the sub as they increase speed to chase a sighted ship... if you look closely you can see a puff of exhaust smoke.

Hitman · 04-20-07, 03:01 PM

Quote:

To me, most of photos of subs going with significant speed show no noticable smoke at all. Therefore, noticable smoke probably means some kind of trouble with the engine (not necessarily serious but simply weared).

You are right in that a weary diesel engine produces more smoke, but the WW2 time diesel engines, -like modern ones but less noticeably in the latter- cause a huge smoke cloud when suddenly increasing revs. You might have noticed in a diesel car that travels ahead of you in the highway a sudden smoke cloud when the driver goes from 5th to 4th gear to overtake. I have read a personal account from Reinhard Hardegen where he explains how, during Operation Drumbeat, he suddenly spotted a gunship and inverted course while applying full throttle to engines and reducting gear (yes, subs also have different final ratios and also clutch) and the smoke coming out of the exhaust was enough to cover him so that the gunboat could no longer see the U-Boat. Also, O'Kane narrates similar experiences aboard Tang

IMO the conclusion is: When cruising along at constant speed, smoke should normally not be very noticeable -except in weary engines, as you correctly stated- but in full throttle situations a heavy smoke cloud is completely accurate.

GoldenRivet · 04-20-07, 03:33 PM

Quote:

Originally Posted by Hitman

Quote:

To me, most of photos of subs going with significant speed show no noticable smoke at all. Therefore, noticable smoke probably means some kind of trouble with the engine (not necessarily serious but simply weared).

You are right in that a weary diesel engine produces more smoke, but the WW2 time diesel engines, -like modern ones but less noticeably in the latter- cause a huge smoke cloud when suddenly increasing revs. You might have noticed in a diesel car that travels ahead of you in the highway a sudden smoke cloud when the driver goes from 5th to 4th gear to overtake. I have read a personal account from Reinhard Hardegen where he explains how, during Operation Drumbeat, he suddenly spotted a gunship and inverted course while applying full throttle to engines and reducting gear (yes, subs also have different final ratios and also clutch) and the smoke coming out of the exhaust was enough to cover him so that the gunboat could no longer see the U-Boat. Also, O'Kane narrates similar experiences aboard Tang

IMO the conclusion is: When cruising along at constant speed, smoke should normally not be very noticeable -except in weary engines, as you correctly stated- but in full throttle situations a heavy smoke cloud is completely accurate.

exactly... anyone who has driven an older model of mercedes benz or diesel truck knows... give it full throttle and you will get the thick black exhaust.

04-20-07, 03:35 PM

Quote:

Originally Posted by GoldenRivet

see here... http://www.subsim.com/radioroom/show...874#post506874

one video shows a very brief split second filming of the aft of the sub as they increase speed to chase a sighted ship... if you look closely you can see a puff of exhaust smoke.

Good link!
I watched it several times and spotted smoke several times.
Mostly a very light haze with a heat distorsion around the exhaust area.
Should be easy to simulate this effect.

This could also be done in several versions so a random damage could
cause a heavyer smokeing engine?

As for AI spotting it, not as is at the moment.
I'm sure at could be "Cheated in" if you will.
But I don't think smoke was much of a factor in spotting U-Boats
in WWII?

04-19-07, 07:39 PM	#35
GT182 Ocean Warrior Join Date: May 2005 Location: New Castle of Delaware Posts: 3,231 Downloads: 658 Uploads: 0	More power would deffinately mean more smoke, and it would be darker. But as Privateer says .... "I have to dig into the dats to see if I can gain the type of control that would really stand it out." If he can't gain the control he wants, to me any smoke coming from the exhausts would be fine. It's something never seen before in SHIII for the Uboats. The surface ship's smoke was the only thing that was ever modded successfully. But somehow I think he'll find a way to make it all happen as he wants. __________________ Gary No Borders, No Language, No Culture =s No Country I'm a Deplorable, and proud of it.

04-20-07, 01:22 PM	#38
Mush Martin Eternal Patrol Join Date: Dec 2006 Posts: 4,398 Downloads: 4 Uploads: 0	My two cents does AI percieve it as fog and have difficulty hitting you if the smokescreen is between you and the enemy? M __________________ RIP Mush Tutorial

04-20-07, 02:43 PM	#41
Rubini Ocean Warrior Join Date: May 2005 Location: São Paulo Brazil Posts: 2,728 Downloads: 132 Uploads: 0	Good work Privateer! As Sergs said this smoke can't be so much visible. But will be great to have a very discrete one that could be a bit more noticiable (only a bit) when the uboat is in "high" speed surfaced! The colour must be a white gray I guess. The trick is to make the smoke only a slight noticeable one. This will be a great addition to sim feeling. __________________ One gamer's must-have mod is another gamer's waste of time. -Sailor Steve

04-19-07, 01:55 PM	#31
Ubåtskapten Soundman Join Date: Feb 2007 Location: Sweden Posts: 141 Downloads: 9 Uploads: 0	Nice work, looking forward to the final mod. Here are some pictures of diesel exhaust fumes from different submarines if it might be of any help. Even though the smoke on these images probably is when the engines is on high rpm. At least I did not find any images of a WWII U-boat with visible diesel smoke. http://www.dutchsubmarines.com/pictu...2_sea_1988.jpg http://www.geocities.com/CapeCanaver...2/surfaceb.jpg http://www.olgoat.com/substuff/mik66.htm

04-19-07, 03:12 PM	#32
Madox58 Stowaway Posts: n/a Downloads: Uploads:	Wow, That 1st link is what I was looking for! That's kinda what I was seeing in my head. Thanks!! If I can find away to attach it to the engine controls it could possibly be made to change. As I've never really dug into the Subs, I don't know at this point. Right now, If a wave washes over the deck the smoke stops, once above the water line it kicks out a good puff then settles down to a bit less then the picture shows. That looks kinda cool, but still needs cut back. Also, even at full stop the smoke is there. I am looking into tieing into throttle control. but no promises at this point. Oh, and before it's asked, I can do the SH4 Subs the same way.

04-19-07, 03:31 PM	#34
Madox58 Stowaway Posts: n/a Downloads: Uploads:	I'll be honest, I don't know if I can tie it to helm control, props or what at this point. Right now, Any time on surface you have smoke. That part was easy. Now I have to dig into the dats to see if I can gain the type of control that would really stand it out. The Sub stuff is all new turf for me, so it'll take a few days studying.

04-19-07, 07:57 PM	#36
Ubåtskapten Soundman Join Date: Feb 2007 Location: Sweden Posts: 141 Downloads: 9 Uploads: 0	I'm not especially familiar with the file structure but would'nt it be possible to make the amount of smoke vary the same way the engine sound changes when you order an other speed? if for example the smoke graphic-files could be linked with the sound or speed setting-files somehow. :hmm:

04-20-07, 01:19 PM	#37
GoldenRivet Subsim Aviator Join Date: Mar 2007 Location: Texas Posts: 8,726 Downloads: 146 Uploads: 0	nice work privateer i have been out of town and havt not been able to keep up with this thread... but i have a couple of things you might consider that i would like to add to the dicussion if i may. Your post about the smoke going away when decks awash and when submerged is right on (obviously) but you might alos consider that the U-boat would likely only make a substantial or noticable exhaust smoke when running the diesels at ahead full or ahead flank. anyone who has run a diesel engine knows... you cant really see a lot of exhaust gasses exiting the pipe unless you really throttle it to her. Think of a mack truck or something passing you on the highway...when the driver puts more throttle to it is when you really see the most smoke, also when starting from a dead stop. as the engine is turning out high RPM at these times... but at lower RPM such as when idle or when cruising the exhaust is virtually invisible. Im sure the big U-boat diesels would behave in quite the same way. Just a thought. EDIT: i see this has been discussed a little bit already. thats what i get for skipping ahead ;-) perhaps you could tie it to speed or RPM or something similar?

04-20-07, 02:49 PM	#42
GoldenRivet Subsim Aviator Join Date: Mar 2007 Location: Texas Posts: 8,726 Downloads: 146 Uploads: 0	see here... http://www.subsim.com/radioroom/show...874#post506874 one video shows a very brief split second filming of the aft of the sub as they increase speed to chase a sighted ship... if you look closely you can see a puff of exhaust smoke.