Have I been thinking incorrectly about adjusting the prop pitch with those planes having a constant speed prop?

[Uriah]

Have I been thinking incorrectly about adjusting the prop pitch with those planes having a constant speed prop? 

I may be confusing things as GB has the action 'Propeller RPM Control' rather than a term 'prop pitch'.  

I have been using the action 'Propeller RPM Control' for changing the prop pitch in the Spit V.  And I have been thinking that is what I am really doing.  But now I am thinking that what I am really doing is change the boost or something else.    Anyway, I am rather confused.

 

[Bobo]

It's prop pitch. 
I think the MkV has a two stage deal rather than a fully adjustable prop.  Either coarse or fine, something like that

[Uriah]

Google says...No, the Spitfire Mk V did not have a two-stage propeller pitch. Instead, it was equipped with a constant-speed propeller (which automatically and continuously adjusted the blade angles).

 

[BlitzPig_EL]

The early Spitfires had the two stage prop pitch adjustment.  The way that a constant speed prop works is that it will automatically adjust to keep the rpm that you select with the pitch lever, regardless (within reason) of where you set the throttle.  This makes your throttle the tool you use to set manifold pressure.  This is vital in planes with overly fragile engines, like the P40.  For most of my flying in the Warhawk I set rpm at 2600 and keep increasing manifold pressure as needed as altitude or combat circumstance dictates.  This make the P40 engine last a long time.  In difficult circumstances I will go to 2800+ rpm for very short periods only.

This flies in the face of how the V1710 was actually used in combat, but it's how it works in the sim.

[MaxPower]

Engine rpm has an effect on super charger rpm, which has an affect on boost pressure, but it is a secondary effect.  Boost pressure is primarily controlled by the boost lever, which throttles the supercharger.  Reducing boost until the engine doesn't have the horsepower to sustain the selected rpm can control rpm as well.  In at least some aircraft there is a backup propeller pitch control but I've never really used it.  Some aircraft like the Hs-129 have funky prop pitch control schemes that take some getting used to.

[Traffic]

59 minutes ago, BlitzPig_EL said:

The early Spitfires had the two stage prop pitch adjustment.  The way that a constant speed prop works is that it will automatically adjust to keep the rpm that you select with the pitch lever, regardless (within reason) of where you set the throttle.  This makes your throttle the tool you use to set manifold pressure.  This is vital in planes with overly fragile engines, like the P40.  For most of my flying in the Warhawk I set rpm at 2600 and keep increasing manifold pressure as needed as altitude or combat circumstance dictates.  This make the P40 engine last a long time.  In difficult circumstances I will go to 2800+ rpm for very short periods only.

This flies in the face of how the V1710 was actually used in combat, but it's how it works in the sim.

You can run 2800rpm at 49" for 17 minutes. I have hundreds of hours in it in multiplayer. You can definitely stretch its legs a bit. 

[kraut1]

11 hours ago, Uriah said:

Have I been thinking incorrectly about adjusting the prop pitch with those planes having a constant speed prop? 

I may be confusing things as GB has the action 'Propeller RPM Control' rather than a term 'prop pitch'.  

I have been using the action 'Propeller RPM Control' for changing the prop pitch in the Spit V.  And I have been thinking that is what I am really doing.  But now I am thinking that what I am really doing is change the boost or something else.    Anyway, I am rather confused.

 

It is for me sometimes a bit confusing too:

-for planes with total manual propeller control you have to adjust the propeller pitch during flight manually.

-for planes with constant speed propeller (most of the IL-2 GB planes) you can or have to adjust the RPM that is controlled by the constant speed unit (maybe the wrong word)

for example most planes with constant speed prop have at the mission begin the max. rpm that is good for take off or in combat for max. performance

e.g.: for the Ju88A4 2600rpm. After take off to avoid overheating the engine you could reduce the rpm to 2400rpm (at 1.25ATA) for 30minutes climbing. For cruise flight you have to reduce to 2250rpm (at 1.15ATA)...

-German Fighter Planes  (and maybe some advanced allied, I don't know) have since August 1940 (BF-109-E4) an automatic propeller controll unit, that is controlled by the pilot only by moving the throttle lever:

e.g.: BF109-F4 when the pilot moves the throttle forward for e.g.: 1.15ATA the rpm is automaticly controlled to ca. 2200rpm (unlimited time), at 1.3ATA to 2400rpm (30minutes climbing/combat) and at ca. 1.42 ATA to ca. 2600rpm (1 or 3 minutes).

(maybe this a bit simplified and  the exact numbers are a bit wrong, but altogether seen I think in this way it works)

[Uriah]

Is that a mistype Traffic?  49+ boost for 17 minnutes