Proof of MW50 in...

[Wilbus]

Thanks Karnak, find it quite weird that we've got the spit 9 produced least

[MiloMorai]

If MW50 use is to modelled for the A-4 will the lack of performance be modelled after the MW50 useage. MW50 use destroyed the spark plugs in the BMW801 after a minute or two.

from K.Tank's bio

[Wotan]

not just the least modeled but worst performer.

Tell that to the spit whiners

[senna]

MW50 required frequent spark plug changes but where did you come up with spark plug damage after a minute or two. Proof? I'm inclined to belive the words out of a former Lufftwaffe pilot who says they they used MW50 to counteract the Spit9 in order to survive rather than that they simply out rolled and flew them because of their "uber human piloting skills".

[senna]

If you cant take his word about the MW50 to counteract the Spit9, how can you take him at his words about his kills?

[Furious]

MiloMorai,

HT doesn't model maintenance issues.


Wilbus,

W. Green mentions the use of MW50 from A4's on, but I have never seen a chart showing its performance.  The question I have is just what exactly is our "WEP" on the 190a's.


F.

[MiloMorai]

Yes I know it is not modelled. The point was MW50 was not a reliable, effective power boost until the A-8.

As for Green, he started many of the LW myths. Was it not Green who said the MG151/15 was mounted as cowl guns in the 109K?

I would believe the a/c designer before I would believe any pilot.

Here is another thought to ponder. When the MW50s 115l. tank was added the CG changed and the radio and ETC rack were moved to compensate. Was there sucha  re-design done on the A-4? This was before the 150mm stretch to the nose remember; the CG of the A-4 must have been really rear biased and have absolutely autrocious handling therefore.

[senna]

MW50 was kept in a 25 gallon cylinderical tank behind pilot.

[Wilbus]

I've never read anything by W. Green nor do I think I will after what I've heard about him now.

Furious, yes we need to find charts about it and that's why I am about to spend $100 on the A5/A6 handbook (just hope there is something about it in there).
As for the MW50 being used in the versions prior to the A8 I am pretty sure it was and was used operationally, Otto Stammberger was an ace who flew a long time in combat and survived the war, I think he knows what he's talking about.

WEP existed in the LW without MW50 aswell, not sure what it was though, just aircooled with throttle at 110%?

[senna]

WEP is just the max allowed boost setting (starts to heat up engine at faster rate tho). With MW50 you can use a bit more boost within the range where theres so much intake charge, the combustion starts to detinate early. MW50 stops the preignition and allows normal combustion to occur with that higher charge. Basically MW50 is like todays octain booster you could buy at Kragen auto except the Octain booster we can get is better stuff, lol.

[MiloMorai]

25 gal = 115 litre

1 gal of water weighs 10 pounds = 4.54kg

That is alot of weight behind the CG; how was this weight compensated for?

MW50 or ADI cools the overheated intake manifold mixture by evaporation.

[Zigrat]

a gallon of water does not weigh 10 lbs, please do not speak and try to sound authoritative unless you know what youre talking about. you will just confuse people. thanks.

[MiloMorai]

Ah Zig, my Imperial gallons weighs 10 lb and the American gallon weighs 8.336lb at 62*F.

Some more

1 Imp gal = 4.546092 L
1 US gal = 3.785412 L

The ratio is 1.2 (to one decimal point). Now multiply 8.336 times 1.2. What number do you get.

Apoligy accepted.

[HoHun]

Hi guys,

>Ah Zig, my Imperial gallons weighs 10 lb and the American gallon weighs 8.336lb at 62*F.

All I know is that 1 L of water equals a mass of 1 kg at standard temperature :-)

Don't forget that MW50 is not pure water, though - a 50% methanol-water-mixture should be a bit lighter than water, about 0.895 kg/dm^3 I'd estimate.

Regards,

Henning (HoHun)

[HoHun]

Hi Milo,

>MW50 or ADI cools the overheated intake manifold mixture by evaporation.

Actually, the charge cooling effect of the evaporation wasn't the most significant of the MW50's effects. It's anti-detonant capabilities gave a greater power increase than the charge cooling alone since the engine could be run at higher boost pressures.

On the other hand, charge cooling was effective above the engine's critical altitude, too, where no increase in boost was possible.

Regards,

Henning (HoHun)