SUBSIM Radio Room Forums

SUBSIM Radio Room Forums (https://www.subsim.com/radioroom/index.php)
-   Silent Hunter 5 (https://www.subsim.com/radioroom/forumdisplay.php?f=244)
-   -   maintain depth (https://www.subsim.com/radioroom/showthread.php?t=172783)

Wolfling04 08-21-10 07:45 PM

I would highly doubt it

The fact is the depth bug is not that bad, in my game I have to go 15m deeper then the sub will go ie. if I want 150 I have to set the depth for 165m.

Not a big bug IMO, I would just deal with the bug until a mod or hopefully another patch is released and not risk breaking the game too badly ;)

Faamecanic 08-22-10 07:55 AM

Quote:

Originally Posted by DelphiUniverse (Post 1470943)
This isn't a bug. The deeper you get, the higher pressure you reach. The u-boat is like an airplane in the air. Your dive scope keeps the u-boat level. If speed drops you will sink, naturally.

It's the same principle with airplanes. The higher you get in the air the less dense the air will be and the greater speed will be needed to maintain straight and level flight.

It's not a bug. It's a shame they "fixed" something that should not be fixed.

Consider the depth when you dive: (The "square" was a typo, it should be cubic)

Your logic is totally flawed here. The pressure on the U-boat is EQUAL in all directions (below and above) hence it would have a net ZERO effect on neutral bouancy. The only thing effecting a submarine is gravity (which is constant at all depths) vs. the bouancy of the sub.

Airplanes as they go higher in the air ARE affected by the air density. As they go higher in altitude they either have to go faster OR increase thier angle of attack (the airflow vector vs. cord line of the wing). Eventually GRAVITY overcomes the lift vector and the airplane wing stalls.

robbo180265 08-22-10 08:50 AM

Quote:

Originally Posted by Faamecanic (Post 1474243)
Your logic is totally flawed here. The pressure on the U-boat is EQUAL in all directions (below and above) hence it would have a net ZERO effect on neutral bouancy. The only thing effecting a submarine is gravity (which is constant at all depths) vs. the bouancy of the sub.

Airplanes as they go higher in the air ARE affected by the air density. As they go higher in altitude they either have to go faster OR increase thier angle of attack (the airflow vector vs. cord line of the wing). Eventually GRAVITY overcomes the lift vector and the airplane wing stalls.


Here we go again:O:

Trevally. 08-22-10 09:19 AM

I have both the UHS and TDW UI mods installed. I have tried changing the order of install but still I have this bug.

I have just received the VIIC/41 and tested depth again.

At slow speed I stall cant maintain depth below 180m. I will slow sink to the bottom if i dont increase speed to over 2 knots.

If I stop at a depth between 180 and 160m I will float to a depth of 160m then I can maintain depth. (This could be the same as what Wolfling04 is describing)

Any suggestions anyone?

Wolfling04 08-22-10 12:08 PM

Quote:

Originally Posted by robbo180265 (Post 1474270)
Here we go again:O:


Oh god....:rotfl2:

@Trev sounds you got kinda what I have, although I don't sink, I just always stay about 15m above the selected depth ( i have this after about 125m)

Petr 08-22-10 12:41 PM

Has anyone found a way how to fix this problem? Which files must be changed? I dont want to have whole mod, but just files affecting this problem.
Does anyone have them?

Wolfling04 08-22-10 01:18 PM

Quote:

Originally Posted by Ragtag (Post 1471620)
Nope, waiting for answer. Meanwhile i've started using the goblin editor trying to locate which values to edit by comparing the sim files.


^^^answer^^^:salute:

Rip 08-22-10 08:45 PM

Quote:

Originally Posted by Faamecanic (Post 1474243)
Your logic is totally flawed here. The pressure on the U-boat is EQUAL in all directions (below and above) hence it would have a net ZERO effect on neutral bouancy. The only thing effecting a submarine is gravity (which is constant at all depths) vs. the bouancy of the sub.

Airplanes as they go higher in the air ARE affected by the air density. As they go higher in altitude they either have to go faster OR increase thier angle of attack (the airflow vector vs. cord line of the wing). Eventually GRAVITY overcomes the lift vector and the airplane wing stalls.

Well if we are going to do this let's get it right. First I will say I know this as I have driven and ballasted an LA class sub although there are many differences the basic principles are the same.

There is a difference in pressure, as the water pressure is lower at the top of the boat at the bottom due to depth difference. The big factor however is that the external pressure is increasing while the pressure in the people compartment hopefully remains the same. This actually squeezes the sub reducing displacement. It also gets colder as you go down counteracting the reduced displacement somewhat.

A submarine will always be adjusting ballast to adjust for these factors and maintain a near neutral buoyancy. Depending on operations you will run a little heavy or light and counteract it with ship controls as required.

Now to that, the planes on a sub are used to change the up or down angle to use the forward motion to maintain or change depth. There is no "lifting action as water unlike air doesn't compress and creates no pressure differential. Water pressure is determined by depth and is constant.


:|\\

Rip

DelphiUniverse 08-22-10 10:07 PM

Quote:

Originally Posted by Faamecanic (Post 1474243)
Your logic is totally flawed here. The pressure on the U-boat is EQUAL in all directions (below and above) hence it would have a net ZERO effect on neutral bouancy. The only thing effecting a submarine is gravity (which is constant at all depths) vs. the bouancy of the sub.

Airplanes as they go higher in the air ARE affected by the air density. As they go higher in altitude they either have to go faster OR increase thier angle of attack (the airflow vector vs. cord line of the wing). Eventually GRAVITY overcomes the lift vector and the airplane wing stalls.

You missed the entire context, you read the first post of the discussion. My comparison between aircraft and u-boats (It's a german u-boat, not a submarine btw) is that low vs high pressure is both similarly relevant in both cases.

And secondly, airplanes do not have to go faster to keep flying, I explained this to another guy in a later post, which you didnt read. Speed has little to do with airodynamics, it just happen to be a great tool.

And thirdly, you also didnt follow in later posts about pressure points. Neutral boyancy is a tool to maintain specific depths, but what you are missing is that there is a limit to that boyancy, you simply do not understand (Like the rest who I argued with) that gravity and the weight of the water combined with less exposed surface has nothing to do with the pressure being equal on all sides.

You need to get a higher IQ to understand this, I understand that you do NOT understand it, but thats ok. There is hope for you!:DL

robbo180265 08-22-10 10:36 PM

Don't say I didn't warn you.

He's always right - that is all:D

Krauter 08-22-10 10:40 PM

Oh jesus.. Delphin please stop. You're making yourself look like a bigger and bigger ass..

I will just point to the fact that you're saying planes need not go faster to fly.. what rubbish is this. Seriously, stop hitting the bong and go to a physics class

robbo180265 08-22-10 10:43 PM

Quote:

Originally Posted by Krauter (Post 1474786)
Oh jesus.. Delphin please stop. You're making yourself look like a bigger and bigger ass..

I will just point to the fact that you're saying planes need not go faster to fly.. what rubbish is this. Seriously, stop hitting the bong and go to a physics class

It's not physics - you see, our IQ's are too low, otherwise we'd know about the amazing hovering aircraft!

DelphiUniverse 08-22-10 10:52 PM

Quote:

Originally Posted by Krauter (Post 1474786)
I will just point to the fact that you're saying planes need not go faster to fly.. what rubbish is this. Seriously, stop hitting the bong and go to a physics class

Speed is a tool, it is not a law for airodynamics to work. Get this straight.

DelphiUniverse 08-22-10 11:09 PM

Quote:

Originally Posted by robbo180265 (Post 1474787)
It's not physics - you see, our IQ's are too low, otherwise we'd know about the amazing hovering aircraft!

* Give robbo a helicopter * :salute:

Takeda Shingen 08-22-10 11:11 PM

Let's all play nice.

The Management


All times are GMT -5. The time now is 04:53 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright © 1995- 2025 Subsim®
"Subsim" is a registered trademark, all rights reserved.