Let's talk the P-51 in combat in DCS - Page 2 - ED Forums
 


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Old 08-12-2019, 07:08 AM   #11
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Originally Posted by grafspee View Post
Dora with mw50 is hiting 2000hp p-51 1600hp
Is it possible to use WEP in p-51 w/o certain engine dead now ?
The point is that power and the maximum speed are in very interesting relationship... N1/N2= k*(Speed1/Speed2)^3. It means that power plays less role in comparison to S*CL, for example.
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Old 08-12-2019, 07:32 AM   #12
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When I last tested the Dora on MW50 i gave up after 30 mins, as the engine hadn’t blown. That was 580kph. I’d be surprised if the Mustang could match that, and the Spit would be miles behind.
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Old 08-12-2019, 08:29 AM   #13
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The maximum indicated dive of the P51 appears to be 505 mph IAS. How fast can the Dora dive? (850 kph under 2 km of altitude, correct?)

If as you guys say, the P51 is from early 1944 while the Dora and K4 are from late 44, early 45, ... does ED have any plans in the future to allow us to use 75 inches of Hg and the 150 octane fuel, so things are more evened out?
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Last edited by Aurelius; 08-12-2019 at 08:36 AM.
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Old 08-12-2019, 09:28 AM   #14
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Originally Posted by Aurelius View Post
...If as you guys say, the P51 is from early 1944...
Who says that?
ED claims that their Mustangs are D-25 and D-30, so both are 1945 planes.

Another debate about 44-1 fuel?
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Old 08-12-2019, 10:57 AM   #15
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Originally Posted by Yo-Yo View Post
The point is that power and the maximum speed are in very interesting relationship... N1/N2= k*(Speed1/Speed2)^3. It means that power plays less role in comparison to S*CL, for example.
In level flight Power is main thing defining top speed.
Yes just like fw190 A8 with power level close to p-51,but slower.
P-51 at 75" will be faster then 67" one, at SL

Last edited by grafspee; 08-12-2019 at 11:08 AM.
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Old 08-12-2019, 11:09 AM   #16
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Originally Posted by saburo_cz View Post
Who says that?
ED claims that their Mustangs are D-25 and D-30, so both are 1945 planes.

Another debate about 44-1 fuel?
Yes, as sun rises every day over horizon 44-1 fuel debate will rise again and again
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Old 08-12-2019, 11:09 AM   #17
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In flat (no diving in for speed), straight, sea level speed tests with standard weather and temps around 70 F, I can get the following (all aircraft trimmed to fly true):

- TF51: 385 MPH/619 KPH with WEP, 2700 RPM, manually adjusted radiator for reduced drag
- P51: 382 MPH/614 KPH with WEP, 2700 RPM, manually adjusted radiator for reduced drag
- Dora: 374 MPH/601 KPH with MW50 and closing the cowl flaps a bit for drag reduction
- 109k4: 368 MPH/592 KPH with MW50 and adjusting radiators

I have found in my experience in racing the Mustang in DCS that engine failures are the product of a couple things. Either mismanaged heat, or mismanagement of engine MP and RPM. In the latter, it seems rather random. But, apply 61 or more MP when the speed is to low and you are probably overstressing the engine, shortening its life. Adjust things to rapidly and you are increasing the stress, shortening its life.

While racing the mustang, I have seen and gone for 30 minutes at 67MP and 2700 rpm without failure, but not every time. It would be great if we got more detailed information about what is really happening with the engine when it fails. Maybe the new damage model will help with that.
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Old 08-12-2019, 11:11 AM   #18
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I think a D is a D, 25 and 30 are just block purchase numbers. Items in the requisition might change like a radio due to supplies or small improvement.

Numbers in service P-51D 8,200, Me-109k 1,593, Fw-190D 674. What should fill the skies?

Maybe the Stang should have gotten the Griffon?
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Old 08-12-2019, 12:14 PM   #19
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Quote:
Originally Posted by Aurelius View Post
The maximum indicated dive of the P51 appears to be 505 mph IAS. How fast can the Dora dive? (850 kph under 2 km of altitude, correct?)

If as you guys say, the P51 is from early 1944 while the Dora and K4 are from late 44, early 45, ... does ED have any plans in the future to allow us to use 75 inches of Hg and the 150 octane fuel, so things are more evened out?
I’ll say it again. The “easy” current solution is for MW50 to be made unavailable by server owners, until we get better fuel for the allied aircraft.
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Old 08-12-2019, 12:14 PM   #20
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Quote:
Originally Posted by slickdevel View Post
I think a D is a D, 25 and 30 are just block purchase numbers. Items in the requisition might change like a radio due to supplies or small improvement.

Numbers in service P-51D 8,200, Me-109k 1,593, Fw-190D 674. What should fill the skies?

Maybe the Stang should have gotten the Griffon?
Griffon no, but v-1650-9 would be nice
Spitfire could get griffon
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