FW190 Dry Ice Cooled Engine?

[Eros]

Hello all,

I just have one question to make for the FW190.

I fly for quite some time now..and can't fail to notice that i never ever care about engine

management in the Dora.

I fly almost constantly on full power and i never burned the engine.

Is it the case that the radiator is so powerful lthat you don't have an overheating problem?

[Krupi]

It is the Bediengerät Engine Control Unit, it regulates the engine temperature... However if it works as well in the sim as it did in real life I do not know.

[Crumpp]

Is it the case that the radiator is so powerful lthat you don't have an overheating problem?

 

Most airplanes are designed to get along just fine at maximum continuous with cowl flaps closed.

 

The only time you should open them is for a sustained climb.

 

That being said, I set mine cowl flaps at strak or about 2 degrees for cruise which is what was recommended as it the lowest drag setting for the Dora.

 

I find the opposite in the Dora. My engine temps creep up to the redline if I fly around at full power (2700U/min). The engine does not sieze but If I use MW50 then it will usually end with the engine seized after several minutes.

 

If I cruise at 1900U/min then I get there is no temperature issue until the MW50 fluid runs out.

 

If I fly around at take off power (3200U/min) the engine quits after a while.

[Eros]

 

If I fly around at take off power (3200U/min) the engine quits after a while.

 

That's what i'm asking in my post.

I fly around constantly on full power 3200U @ 1.6ata around 1000-2000km with flaps AUTO always (note: I don't use MW-50 at that altitude)

without an engine quiting problem, and i fly around for like 20 minutes, maybe more.

 

Is it only mine that does not quit?

Edited February 11, 2015 by Eros

[gavagai]

Ok, but why dry ice? You're confusing me.

 

P.S. I loved learning the word "sublimation" in chemistry class.

[saburo_cz]

question is, how fast did you fly?

If you fly fast, you can fly realy long time with maximal power setting (with pony too, f.e.)

but if you turn or so on, means fly slow, your engine will be overheated quickly, does not matter which plane do you have.

[RAZBAM_ELMO]

That's what i'm asking in my post.

I fly around constantly on full power 3200U @ 1.6ata around 1000-2000km with flaps AUTO always (note: I don't use MW-50 at that altitude)

without an engine quiting problem, and i fly around for like 20 minutes, maybe more.

 

Is it only mine that does not quit?

 

It's just the sim. However I do notice a slight loss in power after running the Jumo for more than 12 minutes at full power without the MW-50 system. MW-50 slightly increases that but only just. Why do you need to fly around at that power for that long anyways?

[Eros]

Why do you need to fly around at that power for that long anyways?

 

I never demanded that or complained that i can't do it.

But the answer to your question is simple..Because i CAN.

 

All i was asking is:

Is it normal for Dora??

 

In the P-51 you push the engine for more than 1 min and it's dead.

The Junkers Jumo 213 A-1 engine can indefinitely run on full power with no damage?

I cannot find engine limitations anywhere and how long it should run on what settings.

In the game I fly every sortie on full power..sometimes 'till bingo fuel so i'm sure i can do it.

 

as for that

 

It is the Bediengerät Engine Control Unit, it regulates the engine temperature... However if it works as well in the sim as it did in real life I do not know.

 

You are quite wrong sir. It does not control engine temperature

It only regulates manifold pressure. The same is done in the P-51.

Edited February 11, 2015 by Eros

[Nirvi]

All i was asking is:

Is it normal for Dora??

 

In the P-51 you push the engine for more than 1 min and it's dead.

 

 

You can fly with 3000 RPM and 70" manifold in the Mustang for 10minutes without a problem, you just have to be fast enough.

[Crumpp]

You are quite wrong sir. It does not control engine temperature

It only regulates manifold pressure. The same is done in the P-51.

 

 

He is right. What do you think controls the auto flaps.

 

Personally I don't set auto cowl flaps. I did not even know that was modeled. I manually adjust them and watch the temperature gauge.

[Eros]

Yeah ok it watched the coolant temperature and operate radiator flaps.

It however does not reduce manifold pressure to keep the temperature from rising further.

 

I would appreciate though if anybody know and could answer my main question.

[Blech]

I cannot find engine limitations anywhere and how long it should run on what settings.

 

 

Hi,

 

I can not answer your main question

 

Only naked "figures"

 

Power settings - manual page 96

 

Throttle Position / Power Output / RPM / Permissible Time / Fuel Consumption Liter/hour:

90° command angle / Emergency Power (increased take-off power)* / 3250 / 3min / 620 -20

90° / Take-Off, Combat and Climb Power / 3250 / 30min / 590 +20/-40

75° / Continuous Power / 3000 / constant / 530

( Above 7500m, max continuous power at 3250RPM is certified - page 97 )

60° / Economy I / 2700 / constant / 375

47° / Economy II / 2400 / constant / 285

34° / Economy III / 2100 / constant / 215

0° / Idle (in flight) / app. 1200 / - / -

10° / Engine Stop position / - / - / -

 

On the other hand :

 

Coolant Temperature : Normal operating temperature is 70…120°C

Coolant Exit Temperature 100° C at all altitudes

Exceptions: During Climb 110 (100)° C is permissible, and during takeoff and taxi 130 (120)° C permissible for brief periods of time

 

Oil Temperature : Normal operating temperature is 110…130°C

Oil Entry Temperature at Max Continuous Power is 110° C, minimum pressure is 4.5 atü

Maximum temperature (short duration) 130° C

 

For cooling :

+ Radiator Flaps (auto ? / man ?)

+ MW50

 

3200/3250 RPM for 30 minutes should be possible

The interesting question is : With Radiator Flaps Auto and without MW50 ?

 

Weather conditions / temperature in the Mission Editor ?

 

 

 

################# Edit

 

Found something interesting about the MW50

 

http://www.focke-wulf190.com/jumo_213_2.htm

 

"Die Motoren konnten mit den Sonderstoffanlagen MW-50 (Wasser-Methanol Einspritzung) und GM-1 ( Einspritzung des Sauerstoffträgers Stickoxyduhl) versehen worden

Die MW-50 Anlage brachte eine Ladedruckerhöhung von 0,28 bar, die Einspritzzeit war dabei auf 10 min begrenzt

Danach musste die Einspritzung für 5 min unterbrochen werden

Der 115 l Vorratsbehälter in der FW 190 D reichte bei der MW-50 Anlage für 40 min Einspritzdauer"

 

"The motors have been provided with the special fuel systems MW-50 (water-methanol injection) and GM-1 (injection of oxygen carrier Stickoxyduhl)

The MW-50 system brought a boost pressure increase of 0.28 bar, the injection time was about 10 min limited

Then the injection had to be interrupted for 5 min

The 115-liter storage container in the FW 190 D submitted to the MW-50 system for 40 min injection time"

Edited February 12, 2015 by Blech

[Krupi]

Yeah ok it watched the coolant temperature and operate radiator flaps.

It however does not reduce manifold pressure to keep the temperature from rising further.

 

I would appreciate though if anybody know and could answer my main question.

 

I never said it did...:huh:

[Rolfey]

The mustang can be run on full wep for 20+mins.

It's all about understanding the stresses your putting on the engine. This is the same for the Dora and the 109.

 

If you aren't going fast enough, the cooling system won't be running as efficiently as possible leading to failure.

 

I personally find manual control of the radiator flaps best, especially if your looking for best performance, remember they will cause extra drag

[Luzifer]

Don't get too used to manual radiator flaps control, though. It isn't realistic, the knob is only there to change the temperatur set point for the automatics. There simply is no manual control. Some time back Yo-Yo posted something to that effect and that it will probably change in the sim.

[Rolfey]

Don't get too used to manual radiator flaps control, though. It isn't realistic, the knob is only there to change the temperatur set point for the automatics. There simply is no manual control. Some time back Yo-Yo posted something to that effect and that it will probably change in the sim.

 

Didn't realise that was the case with the control knob in the Dora. Good to know :)