Doubt about sinking subs with one torpedo.

[Linton]

SQ what is a weibul distribution and are there any different patterns?

[SeaQueen]

Originally Posted by Linton

SQ what is a weibul distribution and are there any different patterns?

An engineer came up with it for modeling material failures, and it turned out to work well for any problem involving a "weakest link" most likely to fail.

http://www.weibull.com/LifeDataWeb/t...stribution.htm

http://en.wikipedia.org/wiki/Weibull_distribution

http://mathworld.wolfram.com/WeibullDistribution.html

[LoBlo]

Nah, it wouldn't have to be that complex. Something simple that would get the job done with a minimal of coding and processing time too. I'm thinking that when the game is initialized, randomize the damage value of each weapon by a factor of X and the armor value of each platform by a factor of Y. Something like this.... and don't laugh at my amateurish/nonexistant coding skills ....

For n = 0 to numberof platforms
X = Random (-20 to 20)
Damage_wep(n) = Damage_wep(n) + X
Y = Random (-20 to 20)
Armor_platform(n) = Armor_platform(n) + Y

In a file at the beginning of each game, so that each time the game is started the damage value and the armor value of each platform is varied by a small amount, but enough to makes hits a little less predictable. To increase/decrease the probability of a kill, one would increase/decrease the baseline armor/damage rating and let chance do the rest.

[kage]

Here's my suggestion. Have the torpedo doctrine, when initing, select a random distance from the target. When that close, go boom. There you have randomized amounts of damage.

Should be adjusted to each kind of torpedo, though, which will be some work, but it is fully doable.

[LoBlo]

Originally Posted by kage

Here's my suggestion. Have the torpedo doctrine, when initing, select a random distance from the target. When that close, go boom. There you have randomized amounts of damage.

Should be adjusted to each kind of torpedo, though, which will be some work, but it is fully doable.

Hey, that's a great idea. I've taken your suggestion and gave it a go by messing around with the torphoming doctrine to try to randomize the torp damage. So far its working pretty nicely. Thanks.

http://www.subsim.com/radioroom/show...629#post291629

[SeaQueen]

Originally Posted by kage

Here's my suggestion. Have the torpedo doctrine, when initing, select a random distance from the target. When that close, go boom. There you have randomized amounts of damage.

Should be adjusted to each kind of torpedo, though, which will be some work, but it is fully doable.

That begs the question, though, how should torpedo range errors be distributed? Certainly not uniformly!

[LoBlo]

Your still thinking too complex.

The way the game engine handles target range, blast radius, and armor damage kage's suggestion actually works quite nicely. Increasing or decreasing the probability of a kill can be achieved by bringing a platforms armor value closer and closer to the weapon damage rating. The probability that the blast radius of the torp will surpass the armor rating of the platform decreases as the platforms armor rating nears the weapons damage rating.

Its not a perfect RL solution, but its a nice upgrade in unpredictability.

[JgzMan]

If I were going to randomize damage, I would do it as follows:

1) Reduce damage of each and every weapon in the game by, say, 15%, or 25%, or somthing similar. Call that number X. (the actual number, mind you, not the %)
2) each time a weapon explodes, add to the damage a random number ranging from 0 to 2X.

That seems that it wouldn't require too much editing. Each weapon would need an additional constant assosaited with it (the number 2X, for that particular weapon) and a RAND function. To save time, you might call the RAND function on launch, or even on weapon load. Whenever the CPU load is lowest.

[anthrax]

I think that any hit on a submarine that breaches the pressure hull will basically right it off. For a single hulled sub, I think a 100 pound warhead found in a light weight torp will be more than enought to rupture the 3 to 4" thick preassure hull found a single hull sub especailly when it is at depth.

If the pressure hull ruptures, uncontrollable flooding and result and the sub will drop to the bottom as submarines when submerged have ZERO reserve boyancy. Any flooding will cuase it to sink. I suspect that the MBT on a typically sub isn't that big and will definately not compensate for a hull breach and flooding of a compartment.

[micky1up]

i think you had better take alook at the royal navy heavy weight torpedo spearfish with its shaped warhead and up to 70kts speed more than a match for any of todays boats dare i say even the double hull monsters

[Kapitan]

Typhoon and Oscar class submarines are designed to take a direct hit and manage to come to the surface with two compartments fully flooded.

Note when kursk sank she had her first three compartments flooded but still her rear broke surface and nose climbed up however it took the flooding of 7 compartments to pin her down to the ocean floor, and it was multiple torpedos that did that.

[micky1up]

Originally Posted by Kapitan

Typhoon and Oscar class submarines are designed to take a direct hit and manage to come to the surface with two compartments fully flooded.

Note when kursk sank she had her first three compartments flooded but still her rear broke surface and nose climbed up however it took the flooding of 7 compartments to pin her down to the ocean floor, and it was multiple torpedos that did that.

nope her aft end didnt reach the surface at all where did you get that from?

[Kapitan]

Well i have been in reasearch for now five years on kursk, i have a scaled down report thats 700 pages long, i also have other documents relating the kursk is 505 feet long the sea she sank in was a little over 300 feet deep if she sank at a 28 degree or more angle down then her back end would have come up to the surface.

Also note the vessels that she was simulating attack wouldnt have seen her back end they were to far away and more concerntrating on a torpedo coming than a missile so all eyes were on sonar systems.

[micky1up]

considering that the fleet spent time looking for her when she sank i doubt that her aft end came out of the water and the blast whole being so big in thebow the whole boat apart from the aft end flooded very quickly preventing the angle needed to broach the surface also the depth of water here works in my favor the rush of water and weight gained she would have hit the bottom before the ass end came out yet again preventing the aft end coming out

[Kapitan]

Yes its very true however thats a theory, theres others, like one which says she completely surfaced then sank, i doubt either seeing as she would have briefly been picked up on radar.

However the offical report only notes three possible happenings to kursk.