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#2886971 - 10/24/09 10:16 AM Il-2 1946 Inaccurate Jet Exhausts
MiGEater Offline
Member

Registered: 01/28/07
Posts: 151
Hello all,

I have Il-2 1946 and its brilliant, but one minor gripe (it really is minor, i'm just very pedantic) is that the jets have flames coming out of the exhausts. Unless i'm completely mistaken, this is very inaccurate. Is there a way of turning this off without affecting the rocket powered aircraft?

- Alex

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#2887031 - 10/24/09 12:06 PM Re: Il-2 1946 Inaccurate Jet Exhausts [Re: MiGEater]
Kodiak Online   cool
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Registered: 06/02/01
Posts: 2648
Loc: Behind a window in the redligh...
Yeah, that's one of the things that I find annoying also!
Those jets look like they're on fire, not realistic at all!
Hope someone will make a little mod for removing the flaming exhaust.

Best regards, Kodiak.
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#2887072 - 10/24/09 02:01 PM Re: Il-2 1946 Inaccurate Jet Exhausts [Re: Kodiak]
Scylla Online   cool
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Registered: 10/24/99
Posts: 7908
Here is something else...

just got out of the 4.09 Jets server at Hyperlobby and it seems the jets are a lot tougher. I hit two different types of jets several times and failed to down either one.

It used to be that any hit on a jet would bring it down...yet I do not see any change in the 4.09 readme for the jets.

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#2887141 - 10/24/09 03:58 PM Re: Il-2 1946 Inaccurate Jet Exhausts [Re: Scylla]
ArgonV Offline
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Registered: 01/10/01
Posts: 6012
Loc: College Station, Texas, USA
Actually, I find the look realistic. Those jets worked different than modern turbine engines, and produce a far different flame.
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#2887180 - 10/24/09 05:16 PM Re: Il-2 1946 Inaccurate Jet Exhausts [Re: ArgonV]
Kraut Offline
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Registered: 12/30/00
Posts: 3416
Loc: Kit. Ont. Canada
From what I've read, the guys who flew & fought in WWII & Korea said the jets were harder to shoot down that prop jobs. They took more hits & they thought it was that there was less 'plumbing' in jets than props. The plumbing is my take, not their word.
Yes, there's very little in comparison to those early flame throwers, as what they were called, till now. They consumed lots of fuel with poor efficiency thus more fire.

FWIW,
Good Hunting!

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#2887263 - 10/24/09 09:21 PM Re: Il-2 1946 Inaccurate Jet Exhausts [Re: MiGEater]
RAF74_SnakeEyes Offline
Junior Member

Registered: 10/13/06
Posts: 21
Loc: Florida
It may not be that inaccurate. http://www.youtube.com/watch?v=CAsGmHjdlTA sure this is just a startup but if flames can pass thrugh the turbine then it may during high power settings.
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#2887360 - 10/25/09 04:02 AM Re: Il-2 1946 Inaccurate Jet Exhausts [Re: RAF74_SnakeEyes]
Kraut Offline
Senior Member

Registered: 12/30/00
Posts: 3416
Loc: Kit. Ont. Canada
Not really an accurate comparison as those engines are not what the wartime 262s had. What we see here, as you mentioned, was startup, but are also modern types. Just watching early jets take off with all their smoke & fire compared to todays makes for quite a difference. Seeng film clips of those early B52s or even early passenger jet planes & the ones now with more modern engines, is quite remarkable. Not near der smoke und fire.

FWIW,
Good Hunting!

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#2887377 - 10/25/09 04:49 AM Re: Il-2 1946 Inaccurate Jet Exhausts [Re: Kraut]
MiGEater Offline
Member

Registered: 01/28/07
Posts: 151
I'm pretty sure it is unrealistic as you only get the flame when there's a second injection of fuel after the turbine (as far as I know).

At the very least, there shouldn't be smoke AND a flame, as the flame is caused by the unused fuel being ignited (why aircraft with afterburners on don't produce smoke).

While i've never seen a '262 fly i've seen several other early jets in flight (including a T-33 which is closely related to the P-80) and it certainly didn't have that exhaust effect.

Same with meteors, vampires, venoms etc.

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#2887681 - 10/25/09 02:12 PM Re: Il-2 1946 Inaccurate Jet Exhausts [Re: MiGEater]
Kraut Offline
Senior Member

Registered: 12/30/00
Posts: 3416
Loc: Kit. Ont. Canada
It's all in the throttle settings. Even mit pistons.
FWIW,
Good Hunting!

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#2887710 - 10/25/09 03:14 PM Re: Il-2 1946 Inaccurate Jet Exhausts [Re: MiGEater]
RAF74_SnakeEyes Offline
Junior Member

Registered: 10/13/06
Posts: 21
Loc: Florida
Being a jet engine mechanic I can tell you that afterburner works with fuel being supplied after the turbine section. This is to make use of the cooling air which is most of the air taken in by the compressor. Fuel to the afterburner spray bars is only supplied when the power controls are set in afterburner. Since this cooling air passes through the lining of the combustion can all fuel from the main fuel nozzles will be burned, it just depends on how far it needs to go before it does. It is possible to have flames pass from the combustion section through the turbine section and out the exhaust although it is not the norm. Considering that was new technology at the time I can see the engines working like this since poor design in the combustion can, Venturi, and fuel nozzles would cause extended fuel burning.

The smoke produced unless white is not fuel. The F-4 had afterburner and produced black smoke although not as dark as shown in the game. Also jet fuel has changed over the years and if the p-80 used jp-4 back then it is most likely using jet-a now with is the equivalent of jp-8 for the military which could change the efficiency of burning which would mean less carbon in the exaust.

The fact that I saw flames come from the exhaust from that video makes me think that it was possible and black smoke is a little overdone in my opinion but I have seen it on real aircraft.


Edited by RAF74_SnakeEyes (10/25/09 03:15 PM)
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