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XyZspineZyX
10-08-2003, 02:51 PM
I'm a bit confused over how the constant rpm governor acts in FB, or at least the 109F4 in FB (I haven't tested with any other aircraft, and I'm at work now.)

My only real world experience of constant speed props is a single flight, and in a more modern aircraft, but that aircraft behaved as I expected and the 109F4 in FB does not.

It seems that the governor correctly maintains prop RPM when engine power changes but not when speed changes. When accelerating in straight and level flight, the prop RPM goes up as speed goes up, so I lower the RPM, and it continues to rise, and so on and so on, until cruise speed is reached.

I cannot understand how this can be. Is this an error in the modeling, or were the old day governors really weird?
_
/Bjorn.

XyZspineZyX
10-08-2003, 02:51 PM
I'm a bit confused over how the constant rpm governor acts in FB, or at least the 109F4 in FB (I haven't tested with any other aircraft, and I'm at work now.)

My only real world experience of constant speed props is a single flight, and in a more modern aircraft, but that aircraft behaved as I expected and the 109F4 in FB does not.

It seems that the governor correctly maintains prop RPM when engine power changes but not when speed changes. When accelerating in straight and level flight, the prop RPM goes up as speed goes up, so I lower the RPM, and it continues to rise, and so on and so on, until cruise speed is reached.

I cannot understand how this can be. Is this an error in the modeling, or were the old day governors really weird?
_
/Bjorn.

XyZspineZyX
10-08-2003, 03:01 PM
Swingman, check out this link to a thread in ORR:

http://forums.ubi.com/messages/message_view-topic.asp?name=Olegmaddoxreadyroom&id=zuimj

Skim past the manifold pressure discussion if you'd like, but Smokin256 does an excellent job explaining how the Kommandogerat ("brain box" engine control) works for both the 109 and 190 in the game, and how they should work.

Blotto

"Only the spirit of attack, born in a brave heart, will bring success to any fighter craft, no matter how technically advanced." - A. Galland

"Look, do you want the jets, or would you rather I slap the props back on?" - W. Messerschmitt

http://home.mindspring.com/~blottogg/sitebuildercontent/sitebuilderpictures/14fsPatch.gif

XyZspineZyX
10-08-2003, 05:25 PM
Blottogg,

Define: "Excellent Job"

I can usually count upon your opinion to be well informed, precise, and accurate.

My opinion, for what it is worth, is that 256 may be some form of cannabis. http://ubbxforums.ubi.com/infopop/emoticons/icon_smile.gif <------- note the smiley face.





JG14_Josf

XyZspineZyX
10-09-2003, 05:35 PM
bump

"I am a hunter. When I have shot down an Englishman my hunter's passion is satisfied for a quater of an hour."
-Manfred Von Richtoffen

" I fear no over heat 'till the needle on both guages hits the nine...Then it's too late."
-Me


Me to the Smithsonian; "Wanna sell your 190D??"

XyZspineZyX
10-09-2003, 05:44 PM
The Bf-109 doesn't have a constant speed prop. I forget the type it has, but constant speed IIRC is like what the P-47 has. It does have a automatic control for the pitch though, as described by Blottogg.

http://www.mechmodels.com/images/klv_ubisig1a.jpg


Oh yeah, I'm a P-63 whiner too! /i/smilies/16x16_smiley-very-happy.gif