How to use Walther Drive Correctly?

[Kamikaze]

I need some guidance here . . . .

I just got a new type sub with one of these drives. OK, I can turn it on by clicking the H2O2 button. But "how" should I use this? Are there limitations? Does it use fuel or batteries or something else? Surface or submerged?

I just did a search for Walther and did not find anything of use.

Thanks in advance . . . .

[Rockin Robbins]

I can't even find the head in this thing. Nobody can tell me how many liters in a kilometer. All the instruments have foreign mumbo-jumbo written all over them.

Now YOU"RE playing with the Walther drive. Sounds like some kind of European sex toy to me.:nope: No gals on your boat so there's no dang sense trying to figure that thing out.

Well, you have to excuse me. I think I better find out what Voraus and Zuruck mean before these engines seize up. What are those two dots over the U for? Can't these Germans even use the alphabet without fancying it up unnecessarily?:mad:

Here I am a freakin submarine expert and I can't even find the head. Back up to the aft deck again.:-? Do Germans use toilet paper? If they do, what in Sam Hill do they call it? This is drivin' me crazy.:nope:

[Kamikaze]

Hahaha . . . . I suspect they use the old dispatches. Its better than corn cobs!

:o

[Zantham]

The Walther drive uses H2O2 instead of batteries or diesel. It works on the surface, as well as underwater.

According to uboat.net, the Walther drive supplied an estimated 15,000 HP worth of power :o
http://uboat.net/types/xviii.htm

In-game, there is a small fuel gauge that shows how much H2O2 fuel you have remaining, it is located above where you find your regular fuel, battery, Oxygen and CO2 guages. Unlike diesel, the H2O2 is not replenished at a refit port.

You click the little red button on the end of the H2O2 gauge and hold on tight. You still use your telegraph like normal, except you go waaaay faster than you would on diesel.

The range however is quite limited, depending on the speed you choose to go and whether you are surfaced or submerged. I think you can get a couple hundred kilometers or more out of it.. I know its in one of the files somewhere but I can't find it right now.

I did some basic testing like using ahead slow submerged to lose some destroyers, then engaging the turbine to see if they found me again; I was under the thermal layer and they didn't seem to react. Needs more testing to be sure tho.

I've also used it to do end-arounds on taskforces .... yes it is that fast!!! but that really sucks the fuel back quickly. I'm sure other creative minds around here use it for other purposes... I can imagine its hard for a Destroyer to track a uboat travelling at 29 knots with their guns....

[Zantham]

Nobody can tell me how many liters in a kilometer.

There is 5280/0 litres in a kilometer.

[Kamikaze]

Thank you Zantham!

Surface too eh? I was just messing around with it. My hydrophones seem to be not working . . . dial will not spin :( When on the surface and at 2/3 speed if I hit the H2O2 my indicated speed drops to 3 knots. This isnt speeding.

I'll try again in a bit . . .

[FIREWALL]

Nobody can tell me how many liters in a kilometer.

There is 5280/0 litres in a kilometer.

I thought litres was a liquid measurement.

And doesn't 5280 ft. equal a mile.


I'm not trying to be a wise guy. I need all the help I can get too.:D

[BarjackU977]

Can't these Germans even use the alphabet without fancying it up unnecessarily?:mad:

The world will have made a huge step in the direction of a better understanding of each others when most of us will have accepted the idea that the it is made of differences that make it even more interesting.

Now an explanation for the game would be much appreciated, of course. But that remark had nothing to do with the game.

[Rockin Robbins]

It was called humor, and like German, some just don't understand. Then they stand in judgement. Go figure!:up:

Now what's this Okularkopf thing? A medicine cabinet? Wonder what happens when I press one of these six buttons.... Dang foreign labels! I'm afraid to play with my Kippwinkle.

[LukeFF]

The range of the XVIII when using the Walter Turbine is 202 nautical miles at 24 knots, or roughly the range of an American SUV. :yep::shifty:

[Kamikaze]

Ahh LukeFF . . . my Explorer can go 325 miles before I have to fill it (8 cyl). Just keeping thing honest here .

And now the BS . . .or . . the "I be sh1tting ye not" catagory

And when I drive the ambient temp. around the vehicle increases by 10 degrees, and I see Al Gore running after me with signs of protest. . . . . :P

[scrag]

This was intended to allow the U-Boat to reposition out of harms way after conducting an attack. At 24 kts it allowed the attacker little if any time to effectively mount a response. Conversely the drive could be used to position for attack if you need to reposition. U-792 and 794 Type XVIIa ships with U-792 achieving 25 kts during trials. Hydrogen Peroxide H2O2 was the fuel source which was also a a fuel source for the V-2 and was in high demand but short supply. It should also be noted that while western navies and the Soviets experimented with this as a fuel source the mixture is extremely explosive and caused a number of memorable accidents which sank the ship carrying the system. Also of note this is also been reported as a propulsion source for torpedoes and was the likely culprit for the sinking of the KURSK.

[Paajtor]

Walter achieved his remarkable results by using Perhydrol, a nearly pure hydrogen-peroxide solution, as an oxydizer. This was run through a catalysing system, which broke down the hydrogen peroxide (H2O2) into hydrogen and oxygen, in the process producing high pressure steam and oxygen at a very high temperature. The creation of the steam used up both of the hydrogen atoms and one of the oxygen atoms, leaving a free oxygen atom in the mixture. Since the temperature of the gases was hot enough to sustain combustion, diesel fuel was injected, which used the free oxygen atom. This increased both the heat and pressure of the steam. The steam was then used to power a turbine, which combined elements of both gas and Parsons (steam) turbine technology.


Unfortunately for the Kriegsmarine's submarine service—but fortunately for the Allies—the Walter system had nearly as many problems as benefits. The Perhydrol fuel was extremely corrosive, requiring the use of special fuel lines. Another problem, which was actually discovered by the Japanese, who used essentially the same system to power some torpedoes (including a prototype of the Kaiten "human torpedo" variant) was that, unlike conventional fuels, the Perhydrol required fuel lines without any right angle turns. The Perhydrol would sometimes "pile up" in the bends of such lines and spontaneously combust, with the obvious disastrous results.


Another drawback was that the Walter system was extremely thirsty. One reason for the larger hulls was simply that an enormous amount of fuel would have to be carried if the boats were to have sufficient range to be effective in combat.

[The Thorn]

I just came from a mission wth this sub, and I have tested this feature.

Man, the speed is really great. Very usefull when you want to sneak up to a ship at periscope depth. It is very usefull to be faster then normal ships when you are submerged. I made good use of it when i wanted to hit on a smal convoy. Getting in front of them (actually passing them underneath them), repositioned to get my bow to them, and fired some fish, just to get them running into them :D

Speed is really the key to succes.:yep:

[cmdrk]

Speed is really the key to succes.:yep:

No... location, location, location.:)

But speed can get you there.

[Kapitan_Phillips]

So there's absolutley no way to refil this thing at sea?

[Zantham]

So there's absolutley no way to refil this thing at sea?
Nope, refit won't resupply your H2O2. Need to return to port. It's even doubtful historically that a Walther u-boat could have operated out of the far-east, since H2O2 was not easy to make back then, and even more difficult to transport due to its rather explosive nature. This ain't the same hydrogen peroxide you run down to your pharmacy and buy. Pure peroxide will burn your skin and is quite dangerous.

[Kapitan_Phillips]

So there's absolutley no way to refil this thing at sea?
Nope, refit won't resupply your H2O2. Need to return to port. It's even doubtful historically that a Walther u-boat could have operated out of the far-east, since H2O2 was not easy to make back then, and even more difficult to transport due to its rather explosive nature. This ain't the same hydrogen peroxide you run down to your pharmacy and buy. Pure peroxide will burn your skin and is quite dangerous.

Interesting. Thank you! :D

[bookworm_020]

Another problem, which was actually discovered by the Japanese, who used essentially the same system to power some torpedoes (including a prototype of the Kaiten "human torpedo" variant) was that, unlike conventional fuels, the Perhydrol required fuel lines without any right angle turns. The Perhydrol would sometimes "pile up" in the bends of such lines and spontaneously combust, with the obvious disastrous results.

The Japanes used this method for powering all their torpedo's (Type 93, 95). They found gentle curves, not sharp agles were best (as mentioned) as well as cleaing all fittings so there were no traces organic marerial inside the fue system (like a finger print or cotton fibres) ment that it wouldn't explode. The torpedo's could be then haddled just like any other torpedo.

The British tried to use a simlar system between the wars for powering torpedos, but after a few bad explosions, they went back to the older methods.

[Kamikaze]

Is this H2O2 similar to the (if I am remembering correctly . . an issue these days) Z-stoff/T-stoff that was used for the ME-163? The description of the corrosive nature of the pure hydrogen sounded very similar to the catalyst (I think it was the Z-stoff) from that aircraft.

Very NASTY chemicals indeed! Improperly handled and you have large explosions. Or melting flesh :o


I got rid of the Snorkle mod which was screwing up my ship from behaving correctly (except for the Starting Career with a Type XXIII . . left that active). I was disappointed the H2O2 could not be refilled. But knowing that now . . . it does seem to be best used in small spurts. Attack positioning . . . or possibly running away.

[Raptor1]

The Japanese did not use Hydrogen-Peroxide in their Type 93 and Type 95 Torpedoes, that was pure oxygen

Almost all use of H2O2 was stopped after the HMS Sidon explosion (I think that was it), though the Russians still used it in their Torpedoes (Something that might have caused the sinking the Kursk)

As for the Me-163, it's the T-Stoff

Also, I would love to know where you people get those so called "XXIII" Boats, i only ever saw the IXD and the XVIII...

[hyperion2206]

I can't even find the head in this thing. Nobody can tell me how many liters in a kilometer. All the instruments have foreign mumbo-jumbo written all over them.

Now YOU"RE playing with the Walther drive. Sounds like some kind of European sex toy to me.:nope: No gals on your boat so there's no dang sense trying to figure that thing out.

Well, you have to excuse me. I think I better find out what Voraus and Zuruck mean before these engines seize up. What are those two dots over the U for? Can't these Germans even use the alphabet without fancying it up unnecessarily?:mad:

Here I am a freakin submarine expert and I can't even find the head. Back up to the aft deck again.:-? Do Germans use toilet paper? If they do, what in Sam Hill do they call it? This is drivin' me crazy.:nope:

To answer your question: Yes, in Germany we do use toilet paper and guess what we even electricity!:p:lol: And if you want to have some toilet paper on a German U-Boat you just have to ask for "Toilettenpapier". Sound familiar?:p
Last but not least: "Voraus" means "ahead" and "zurück" means "back". But I guess you already kniew that.:lol:

[Toastman]

Hi Guys ,

After reading these replies it strikes me that the choice of the devs to give us this sub and not the XXI was a foolish one !
I've just been given command of U796 in my campaign game and although the sub is sleek and sexy , I would have preferred a XXI with its better endurance and snorkel system , especially with the total air dominance by the allies in north western Indian ocean areas .
My last mission in a 9D2 to the gulf of Aden and Omman took forever , with constant air attacks by multiple AC , and a snorkel on a XXI would have been ideal.

What do you all think , would you prefer a XXI ?

Toastman out .

[Zantham]

Hi Guys ,

After reading these replies it strikes me that the choice of the devs to give us this sub and not the XXI was a foolish one !
I've just been given command of U796 in my campaign game and although the sub is sleek and sexy , I would have preferred a XXI with its better endurance and snorkel system , especially with the total air dominance by the allies in north western Indian ocean areas .
My last mission in a 9D2 to the gulf of Aden and Omman took forever , with constant air attacks by multiple AC , and a snorkel on a XXI would have been ideal.

What do you all think , would you prefer a XXI ?

Toastman out .

See this thread:
http://www.subsim.com/radioroom/showthread.php?t=132113

Its a mod that adds a snorkel to the IX-D2 and XVIII and also the option to change your XVIII into an XXI.

[Toastman]

Thanks for the info , this sim just gets better and better !

[peterloo]

Is this H2O2 similar to the (if I am remembering correctly . . an issue these days) Z-stoff/T-stoff that was used for the ME-163? The description of the corrosive nature of the pure hydrogen sounded very similar to the catalyst (I think it was the Z-stoff) from that aircraft.

I checked Wikipedia. T-stoff is hydrogen peroxide, Z stuff is sodium permaganate / potassium permaganate

So, you're right:up:

Upon mixation, these two substances react, giving out vast amount of oxygen and heat. So, it can act as a propellent.

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

Peroxide can be very dangerous if improperly handled, since it is very oxidizing and cause chemical burns. However, it can be safe if used carefully.

I don't think the range will be very long, since a large amount of peroxide fuel is needed to propell the submarine. Might buy it later and try it out:p

[scrag]

I finally engaged the Warp Drive on my Type XVIII U-Boat
http://uboat.net/types/xviii.htm

I am standing there in the control room and as the evil Klingon err British destroyer closes me for the kill I shout "NOW CHEKOV WARP FRICKEN SPEED!!!!!!ARRRRRRR!!!!!" then I stammer Werner - whatever engage the drive!" "Helm ALL HEAD FLANK AND THEN SOME - OPERATE THE NOS, RAISE THE RODS ENGAGE THE CLOAK JUST GET US THE HELL OUT OF DODGE!!!!!!!" Fun city the mysterious walther drive comes to life - it's deep throbe resonants through out the hull or it is the bad Chili I ate prior to watch and I will need to evacuate my colon but I digris off we go to the races!!! We reach 21 knots HOLY BATCAVE BATMAN!!!! then we turn and the everyone who is standing is tossed to the side "BATTLE SPEED MORE GROG FOR THE CREW!!!" First time I actually outran the Hedgehog rounds HA HA YOU BRITISH PIG-DOGS YOUR MOTHER IS A HAMSTER AND YOUR FATHER SMELT OF EDLEBERRIES!!!! I SHALL DISCHARGE THE CONTENTS OF MY NOSE IN YOUR GENERAL DIRECTION" I stammer over the UWC Phone!!!!:rotfl: :rotfl: :rotfl: :rotfl:

[wetwarev7]

Hydrogen Peroxide is fun stuff. We use the diluted stuff in our medicine cabinet to help with killing bacteria on cuts and abrasions. Of course, this is somthing like 1% Hydrogen Peroxide, 99% water. It's also used by some to bleach thier hair.

When I was working in the enviromental field, we used to use a 10% solution to clean out some of the wells due to it's reaction to dirt/contamination. Even at that dilution, it was still dangerous. If you poured it onto a piece of wood, the wood would catch fire shortly. Fun stuff...

I remember one time using this stuff to clean a sample well and my coworker spilt some on his foot. I noticed his boot was smoking and pointed it out to him. He used his knife to cut the laces and flung it off his foot and by the time it hit the ground, it burst into flames.

I would imagine the stuff used in the H2O2 is close to 100%. For God's sake don't spill that stuff on the munitions, Benard!

[1480]

And no one has even touched the fact that the lastest and greatest use of peroxide is improvised explosives. 9 out of 10 suicide bombers will agree.....