PDA

View Full Version : P51 manifold pressure at high alt wrong???



FA_Whisky
09-11-2005, 03:25 PM
this comes from shockwave productions:

Critical Altitude

The critical altitude for this engine is 32,000 feet. This is the altitude where the engine can still produce the full 67" of manifold pressure for "dry" combat power at full throttle. Above this altitude, the manifold pressure and engine power will begin to fall off. The War Emergency Power rating of 80" will begin to fall off above 25,000 feet.

http://www.shockwaveproductions.com/store/p51/

FA_Whisky
09-11-2005, 03:25 PM
this comes from shockwave productions:

Critical Altitude

The critical altitude for this engine is 32,000 feet. This is the altitude where the engine can still produce the full 67" of manifold pressure for "dry" combat power at full throttle. Above this altitude, the manifold pressure and engine power will begin to fall off. The War Emergency Power rating of 80" will begin to fall off above 25,000 feet.

http://www.shockwaveproductions.com/store/p51/

p1ngu666
09-11-2005, 03:30 PM
the top speed is at 25,000 ft

think they've got muddled up.

MEGILE
09-11-2005, 04:53 PM
At 32,000FT a Mustang Mark III fitted with a Packard Merlin V.1650-3 would have a maximum manifold pressure of around 58.7 inches, giving an indicated speed of around 272MPH and a True airspeed of around 443 MPH.
Full throttle height was 28,000 Feet in FS gear.

I don't have my joystick plugged in so I can't test this in game though.

EDIT: just realized it was the D model you are referring to....
Also the 80" you quote is actually the boost they are using for the P-51H using wet war emergency, not the D model we have in game.

lrrp22
09-11-2005, 05:13 PM
The P-51B/C's V-1650-3 67" Hg critical altitude, rammed, was between 28-29,000 ft. The P-51D and later B/C's -7 engine hit critical altitude between 24 and 25,000 ft, rammed.

edgflyer
09-11-2005, 05:21 PM
To bad it still is a flying piece of cr**. Would be nice if it would stop flying like a wooden barrel with wings

NonWonderDog
09-11-2005, 06:07 PM
I think the manifold pressure gauge is a bit off for every plane. Superchargers probably aren't modelled in as much detail as would be desirable.

It also seems awfully odd that nearly every engine in the sim idles at ~25" MP...

crazyivan1970
09-11-2005, 07:57 PM
Why are we referencing Shockwave production in ORR? I am confused http://forums.ubi.com/groupee_common/emoticons/icon_biggrin.gif Since when they become a source for information? Someone enlighten me before i move this thread to GD please http://forums.ubi.com/groupee_common/emoticons/icon_wink.gif

VW-IceFire
09-11-2005, 08:54 PM
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by edgflyer:
To bad it still is a flying piece of cr**. Would be nice if it would stop flying like a wooden barrel with wings </div></BLOCKQUOTE>
Gotta ask the pilots what they are doing wrong to illict such performance http://forums.ubi.com/groupee_common/emoticons/icon_smile.gif

FA_Whisky
09-12-2005, 12:10 AM
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content"> Why are we referencing Shockwave production in ORR? I am confused Since when they become a source for information? Someone enlighten me before i move this thread to GD please
</div></BLOCKQUOTE>

I know, its from shockwave. But since they are also trying to make a sim as real as possible...
Was hoping someone would come around and post some actuall test data. All i noticed that the P51d in the game does not have any power to fly at 30k.

edgflyer
09-14-2005, 07:20 AM
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by VW-IceFire:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by edgflyer:
To bad it still is a flying piece of cr**. Would be nice if it would stop flying like a wooden barrel with wings </div></BLOCKQUOTE>
Gotta ask the pilots what they are doing wrong to illict such performance http://forums.ubi.com/groupee_common/emoticons/icon_smile.gif </div></BLOCKQUOTE>

Not doing anything wrong. The plane just bleeds off its energy to fast becuase of over inflation of the controls on it. It just has no e-retension. Once this gets fixed it will be a awsome plane again like it was on patch 3.02. Oh and yes, please oh please de-synce the guns.

WOLFMondo
09-14-2005, 04:37 PM
I noticed today the Mustang MkIII's dial at full power regardless of height goes up to 70" or there abouts.

Also its fuel gauge doesn't work, which caused me a shock during a dogfight.