Spitfire & Hurricane flight model & engine performance thread. (1.09 patch)

[MadTommy]

As interesting as this might be for some of you, this thread was meant to be for posting observations about the performance of the Spit & Hurri as it is in game, not another discussion about historic records relating to flight models.

But hell at least people aren't slagging each other off.

[5./JG27.Farber]

Originally Posted by MadTommy

As interesting as this might be for some of you, this thread was meant to be for posting observations about the performance of the Spit & Hurri as it is in game, not another discussion about historic records relating to flight models.

But hell at least people aren't slagging each other off.

Originally Posted by luthier

Our goal has always been that the actual aircraft flight manuals should be used with Cliffs of Dover. If that’s not the case, the only people that know the guts well enough to write a flight manual are our aircraft programmers – and in that very case their efforts are better spent bringing the performance in line with the actual flight manuals.
In other words, there’s never a situation where writing a flight manual for Cliffs of Dover is a good idea.

...and your first post starts with an out of game document...

[JtD]

Attached a description of the automatic boost control unit as in the Merlin II. You can see how the cut out would work. You can see that it would give full boost, only depending on throttle setting, when the cut off was engaged.

Guess this has been posted before, but so what.

[JtD]

On the Merlin 20 series, the maximum boost available in case of the cut off engaged was regulated through bleed holes of a particular size - which at least required different cut out valves. This way the cut off no longer disabled the abc completely, it just reset it to a higher boost level.

The take off setting did not use the mechanism of the cut out valve, but went a different way, the particulars of which I don't remember right now. It essentially is a fixed throttle setting around the abc as opposed to an abc controlled boost, managed through varying throttle settings depending on a pressure balance. The boost limit with engaged abc cut off and the boost limit with the take off setting are not related.

The necessary modification for the Merlin XII when using all out level with 12lb boost would be a modification of the cut out valve.