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View Full Version : Bug in multi engine aircraft mixture behaviour..



trebby0
02-22-2004, 07:44 AM
Hello Mr. Maddox!

I sincerely enjoy your IL2 creation immensely, especially online!
I would like to invite you to a little experiment with the HE-111 H6, my favorite. (till the JU88 comes out, PLEASE)

My conclusion will be that the MIXTURE ctrl is not completele separated between both engines...

Here we go:

1.Fly at 5000m or so, level with alt stabilization on, so you can work on eng ctrl without bothering for flight.

2.Lets assume right eng (R ENG) hit and on fire.

3.To try stop blaze:
a. select R ENG
b. select MIXTURE "0" (stopping ENG, feul flow, and hopefully the fire)
c. R power lever 0 (or leave where it is)
d. feather the ENG

4.For the moment this works fine, flying on one ENG (the L ENG ofcourse) with the dead R ENG feathered for min drag.
(As a proffesional pilot, i have went through this drill time and time again in simulator)

THEN IT HAPPENS

5.Having finished the Switching on R ENG contr
you again want to ctrl the live L ENG, so you switch to L ENG ctrl....to immediately suffer an self inflicted L ENG failure because the "0" Mixture setting is transferred to this ENG as well!!!!

This is my point: obviously this should not be possible.....
Could you crosscheck the MIXTURE logic?

Thank you, all the best

Trebby

trebby0
02-22-2004, 07:44 AM
Hello Mr. Maddox!

I sincerely enjoy your IL2 creation immensely, especially online!
I would like to invite you to a little experiment with the HE-111 H6, my favorite. (till the JU88 comes out, PLEASE)

My conclusion will be that the MIXTURE ctrl is not completele separated between both engines...

Here we go:

1.Fly at 5000m or so, level with alt stabilization on, so you can work on eng ctrl without bothering for flight.

2.Lets assume right eng (R ENG) hit and on fire.

3.To try stop blaze:
a. select R ENG
b. select MIXTURE "0" (stopping ENG, feul flow, and hopefully the fire)
c. R power lever 0 (or leave where it is)
d. feather the ENG

4.For the moment this works fine, flying on one ENG (the L ENG ofcourse) with the dead R ENG feathered for min drag.
(As a proffesional pilot, i have went through this drill time and time again in simulator)

THEN IT HAPPENS

5.Having finished the Switching on R ENG contr
you again want to ctrl the live L ENG, so you switch to L ENG ctrl....to immediately suffer an self inflicted L ENG failure because the "0" Mixture setting is transferred to this ENG as well!!!!

This is my point: obviously this should not be possible.....
Could you crosscheck the MIXTURE logic?

Thank you, all the best

Trebby

trebby0
02-22-2004, 08:08 AM
Mr Maddox by the way.....

This MIXT carry-over is ONLY relevant if in case of ENG FIRE the game/sim has a logic that takes into account that you actually chop the MIXT (ASAP) the manual says it is relevant as the HE111 has no fire extinguisers .

If in game/sim terms this makes no difference (contrary to real life) then were all doing fine just cutting the ENG by pressing the START key.

Just trying to make a splendid thing even better, so off to the battlefield...

Cheers, Trebby

trebby0
02-22-2004, 08:36 AM
By the way 2,

I run FB ver 1.22

Trebby

trebby0
02-22-2004, 01:32 PM
bump

Agamemnon22
02-22-2004, 01:39 PM
What if you deselect all engines, mixture 100, then select the remaining engine?

Blackjack174
02-22-2004, 01:51 PM
thats what i wanted to say too , otherwise you forward the mixture/throttle setting towards the selected engine , which of course will cut it http://ubbxforums.ubi.com/infopop/emoticons/icon_smile.gif

ZG77_Lignite
02-22-2004, 02:05 PM
I'd like to confirm that it doesn't seem possible to have seperate mixture settings on the He-111 (unsure about TB-3). Whether this is a FB limitation, an oversight bug, or a historic feature, I don't know.

Would be great to fix if possible, though as everyone knows (or should know), not every bug can be fixed.

trebby0
02-23-2004, 01:03 AM
AS ZG77 confirmed I find no way around this problem, having tried the selected DESELECT ALL ENG and then MIX back to 100 pct(in fact no ENG ctrl in this mode possible)

Am out of clues here, need an answer to the question:

Is it RELEVANT to cut MIX

trebby0
02-23-2004, 01:19 AM
......(darn, posted without finishing topic...)

If SIM does equally well kills fire with START button (ENG off selection) pressed, it is more of cosmetic importance.

If SIM kills fire better via the chop MIX method, then it reduces survival for serious M√¬∂belwagen pilots considerably.

So Mr. Maddox, in an effort of constuctive commentation please :

1. confirm if MIX chop relevant
2. preferably do not carry over this MIX logic to BoB...

For the time being I take the safer course of action in case of ENG FIRE:

0.keep flying...
1.switch to affected ENG
2.chop MIX to 0
3.OPEN affected THROTTLE (to burn off quickly
any feul still in feul feed lines from feul shut off valve to affected ENG)
4.feather affected ENG
5.CLOSE affected THROTTLE(knowing all possible feul now gone)
6.wait if fire goes out (maybe 30 secs max...)
7.IF fire out, set MIX as req1uired on LIVE ENG
8.switch to LIVE ENG safely....

Comments welcome, Trebby

trebby0
02-23-2004, 01:26 AM
....typing with a baby on my arm aint easy...

action 7. should be:
setting MIX on the dead ENG as needed on the LIVE ENG (mostly 100pct), as this setting will be uncontrollaby transferred to the LIVE ENG (wasnt that my point?)

cheers, Trebby

trebby0
02-24-2004, 05:08 PM
Bump

Gato-Loco
02-24-2004, 09:24 PM
bump! I'd like to know about this.

trebby0
02-26-2004, 06:45 AM
bump so do i...

trebby0
03-01-2004, 09:57 AM
bump

Oleg_Maddox
03-02-2004, 11:54 AM
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by trebby0:
......(darn, posted without finishing topic...)

If SIM does equally well kills fire with START button (ENG off selection) pressed, it is more of cosmetic importance.

If SIM kills fire better via the chop MIX method, then it reduces survival for serious M√¬∂belwagen pilots considerably.

So Mr. Maddox, in an effort of constuctive commentation please :

1. confirm if MIX chop relevant
2. preferably do not carry over this MIX logic to BoB...

For the time being I take the safer course of action in case of ENG FIRE:

0.keep flying...
1.switch to affected ENG
2.chop MIX to 0
3.OPEN affected THROTTLE (to burn off quickly
any feul still in feul feed lines from feul shut off valve to affected ENG)
4.feather affected ENG
5.CLOSE affected THROTTLE(knowing all possible feul now gone)
6.wait if fire goes out (maybe 30 secs max...)
7.IF fire out, set MIX as req1uired on LIVE ENG
8.switch to LIVE ENG safely....

Comments welcome, Trebby<HR></BLOCKQUOTE>

Why do you think that your sequence will bring to live the damaged engine again and will not fire again? http://ubbxforums.ubi.com/infopop/emoticons/icon_smile.gif

I will show your posts to our aircraft engine programmer. Not sure that he will like you personally http://ubbxforums.ubi.com/infopop/emoticons/icon_smile.gifhttp://ubbxforums.ubi.com/infopop/emoticons/icon_smile.gifhttp://ubbxforums.ubi.com/infopop/emoticons/icon_smile.gifhttp://ubbxforums.ubi.com/infopop/emoticons/icon_smile.gifhttp://ubbxforums.ubi.com/infopop/emoticons/icon_smile.gifhttp://ubbxforums.ubi.com/infopop/emoticons/icon_smile.gifhttp://ubbxforums.ubi.com/infopop/emoticons/icon_smile.gif

Strange_361st
03-02-2004, 01:12 PM
Since were on the topic of burning motors... which aircraft does the "Fire Supressant" work. I have the key map'd but yet I have yet to see it work?

"Strange"
XO of the 376th vFS, 361st vFG
http://www.361stvfg.com

xTHRUDx
03-02-2004, 03:05 PM
tb3