WEP question

[flakbait]

I was reading a Squadron/Signal book on later Bf-109 models and came across this about the G6 with GM-1:

 

...this not only allowed the Bf-109 to operate above the still rated altitude of the DB-605 engine but also leave a persuing Spitfire V standing still

Is the WEP acceleration modeled or does it just allow the aircraft to accelerate at the normal rate for a long period of time? There doesn't seem to be any acceleration difference to me between full power and WEP. The aircraft just keeps accelerating at the normal full power rate until it hits a higher speed. I'd think that using something like GM-1 or water injection would cause a rather sharp jump in acceleration rates.


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Flakbait [Delta6]
Delta 6's Flight School
Put the P-61B in Aces High
"With all due respect Chaplian, I don't think God wants to hear from me right now.
I'm gonna go out there and remove one of His creations from this universe.
And when I get back I'm gonna drink a bottle of Scotch like it was Chiggy von Richthofen's blood and celebrate his death."
Col. McQueen, Space: Above and Beyond
 

[Jochen]

Different boosting methods increase engine's power output and that means climb, acceleration and max speed is increased ie. there is no specific "acceleration" boost which only affects acceleration.

GM 1 injects nitrous oxygen to supercharger inlet and provides extra oxygen for fuel burning process and thus increases output power. However this boosting only works at higher altitudes where supercharger cannot anymore "push" enough air to cylinders.

GM 1 was used only in planes that was intented to operate on high altitudes. It had little or no effect on low altitudes.

Few 190A's were equipped with GM 1 for tests but I don't think it was used operationally. Ta 152 also had GM 1 alongside of MW 50.

On the other hand, many 109's had GM 1 installed. First versions were late 109E's, F-4 series saw quite lot of GM 1's installed and G-6 series were equipped either MW 50 or GM 1 and when you consider that 10 000 G-6's were produced that means quite large number of GM 1's.

For my knowledge no plane in AH is equipped with GM 1.

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jochen Gefechtsverband Kowalewski

Units: I. and II./KG 51, II. and III./KG 76, NSGr 1, NSGr 2, NSGr 20.
Planes: Do 17Z, Ju 87, Ju 88A, He 111H, Ar 234A, Me 410A, Me 262A, Fw 190F, Fw 190G.

Sieg oder bolsevismus!

[flakbait]

Jochen that's not what I'm talking about. When you punch the button and use GM-1, would n't the aircraft accelerate at a faster rate than normal? To me it seems the aircraft in AH don't accelerate faster, they just accelerate to a higher top speed at the same acceleration rate as full power. This is my question:

Would an aircraft, using WEP, accelerate faster than just using full power?

If so, then another question comes up...

Is this modeled properly in AH? I don't believe it is, as aircraft now only accelerate at the standard full-power rate. That's what it seems to me anyway. If I'm wrong by all means correct me.


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Flakbait [Delta6]
Delta 6's Flight School
Put the P-61B in Aces High
"With all due respect Chaplian, I don't think God wants to hear from me right now.
I'm gonna go out there and remove one of His creations from this universe.
And when I get back I'm gonna drink a bottle of Scotch like it was Chiggy von Richthofen's blood and celebrate his death."
Col. McQueen, Space: Above and Beyond
   

[This message has been edited by flakbait (edited 01-31-2001).]

[Jochen]

Atleast I notice my plane accelerating faster with WEP than without. So I think it is modeled, it would be unbelieveable if it would not be modeled.

Try accelerating same plane from 100 mph to say 300 mph in level flight. With WEP it does it more quicly than without.

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jochen Gefechtsverband Kowalewski

Units: I. and II./KG 51, II. and III./KG 76, NSGr 1, NSGr 2, NSGr 20.
Planes: Do 17Z, Ju 87, Ju 88A, He 111H, Ar 234A, Me 410A, Me 262A, Fw 190F, Fw 190G.

Sieg oder bolsevismus!

[MANDOBLE]

flakbait, you can do the next test:
1 - Pick up a 109G10, WEP disenganged and level flight.
2 - Activate autoangle with about 20 degrees nose up and wait untill speed becomes constant at full military power.
3 - Activate WEP. You'll inmediately notice an increase in speed and climb rate for same climbing angle.
4 - Now switch WEP off and switch auto-speed ON and wait until speed becomes constant.
5 - Activate WEP and you'll see that inmediately your plane increases the climbing angle to maintain speed.

So, IMO, yes, our actual WEP increases acceleration, specially noticeable at low speed.

Anyway, IMO, GM-1 is not actually modeled in any of our current 109 versions.

[flakbait]

Just checked it, and it's there. To be honest I was expecting something a tad more sudden. Oh well.

I remember reading that a lot of Bf-109s had GM-1, I wonder why we don't have it here....

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Flakbait [Delta6]
Delta 6's Flight School
Put the P-61B in Aces High
"With all due respect Chaplian, I don't think God wants to hear from me right now.
I'm gonna go out there and remove one of His creations from this universe.
And when I get back I'm gonna drink a bottle of Scotch like it was Chiggy von Richthofen's blood and celebrate his death."
Col. McQueen, Space: Above and Beyond
 

[Jochen]

 

I remember reading that a lot of Bf-109s had GM-1, I wonder why we don't have it here...

Me, and few others, too!  

Maybe 109F-4 and 109G-6 with GM 1 could be released as a low point perk? Not that anyone would fly it regardles but if we ever get RPS it would be nice plane to have in its period.

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jochen Gefechtsverband Kowalewski

Units: I. and II./KG 51, II. and III./KG 76, NSGr 1, NSGr 2, NSGr 20.
Planes: Do 17Z, Ju 87, Ju 88A, He 111H, Ar 234A, Me 410A, Me 262A, Fw 190F, Fw 190G.

Sieg oder bolsevismus!