Mixture & Pitch axis issues.

[bongodriver]

is there a real need to adjust mixture anyway?, even in the real world we just tend to leave it rich, using the EGT trick for leaning is all well and good trying to save a bit of fuel in a C152 or cherokee etc, only aircraft I have flown that need the mixture adjusted have fuel flow gauges which were used to set either a climb or cruise figure, any other time the mixture is rich, my guess is you would want mixture rich in combat too.

[kingpinda]

Originally Posted by bongodriver

is there a real need to adjust mixture anyway?, even in the real world we just tend to leave it rich, using the EGT trick for leaning is all well and good trying to save a bit of fuel in a C152 or cherokee etc, only aircraft I have flown that need the mixture adjusted have fuel flow gauges which were used to set either a climb or cruise figure, any other time the mixture is rich, my guess is you would want mixture rich in combat too.

I don't know if this is accurate or not... But in il-2 sturmovik when you want to boom and zoom, read:surprise thine enemy from above, its wise to set your mix lean on high altitudes. otherwise the enemy could see you from miles away because you were spewing a nasty dark smoke trail. I am not talking about contrails at even higher altitudes.

[Royraiden]

Im having similar problems, even after playing with the sliders.Its driving me crazy.

[bongodriver]

I don't know if this is accurate or not... But in il-2 sturmovik when you want to boom and zoom, read:surprise thine enemy from above, its wise to set your mix lean on high altitudes. otherwise the enemy could see you from miles away because you were spewing a nasty dark smoke trail. I am not talking about contrails at even higher altitudes.

It is true that mixture becomes richer at high altitudes (logically because the air becomes thinner) therefore a higher fuel to air ratio, but some aircraft had an automatic compensation system which meant the mixture was left in the rich setting.

[ptisinge]

MadTommy, the hurricane works perfectly indeed (and some other planes too), but not the Spitfire (I haven't tried the 109 with CEM yet).

Is it that the Spit I has got only two positions for mixture and prop pitch indeed, instead of a bug?

I'm not a 109 flyer, but doesn't it have an automatic control of prop pitch keeping RPM in the optimal zone?

[IvanK]

On these (IRL) Hurricanes and Spitfires the Mixture controls were 2 Position not fully variable.
So think of them as "Auto Rich" or "Auto Lean" that you find on many aeroplanes. So in Lean for example you are in effect just saying I want to run in Auto Lean then using this as a Datum the mixture is automatically leaned as altitude is increased and enriched as altitude decreases. There is no need to be manually adjusting mixture as you climb. In general Weak (Auto Lean) is only going to be used when you want max range or endurance, in Combat you want RICH. Typically there are boost limitations associated with particular mixture selections

In addition the RICH position is at the REAR and WEAK position FORWARD. Also the quadrant was so designed that if the Throttle is brought back to idle it will also drag the mixture lever BACK to its RICH position. You can see this in operation on the Second selectable Hurricane.

The First selectable Hurricane is bugged as the Throttle slides ghost like through the Mixture lever. in the case of the Spitfires its bugged as the Throttle does not drag the mixture lever back. Devs are aware of these bugs

Some of the "rough" running we see is the engine being way to sensitive to the -ve G cut. At present a controlled slow (like around 0.8G) nose lowering has the engine coughing. This sensitivity needs to be fixed so normal smooth attitude changes can be accomplished without the coughing we now see with the slightest lowering of the nose.

[Deadstick]

I'm not a 109 flyer, but doesn't it have an automatic control of prop pitch keeping RPM in the optimal zone?

I think that depends on the model. And from what I see of the E3, it is manual prop pitch control.

Unless there is a key to be mapped for auto somwhere?