How to properly use prop pitch in IL-2 Cliffs of Dover

[MadBlaster]

Originally Posted by cheesehawk

I always felt that 1946 modelled the prop pitch as an engine governor. It doesn't really effect speed or acceleration, just limits the max rpm the engine can achieve.

frustrating. i can see how someone would believe that clod has way better prop pitch control than 46 if they thought that. maybe a good enough reason for some to stop playing 46 and play clod. but you would be completely wrong.

109 - use manual prop pitch 0% to move the rpm/pitch clock down (5% of the time)
- use manual prop pitch 100% to move the rpm/pitch clock up (5% of the time)
- use auto prop pitch as the default (90% of the time)
- always adjust your throttle to keep in the power band (100% of the time)

Example g10, (power band ~ 2500 to 3000)i will use axis values instead of ata and clock angles to make it understandable.

power dive
your cruising along in level flight at 70% throttle with auto prop pitch engaged around 400 kph. Close the rad, engage the mw50, run the throttle to 110% and push the nose down. When the rpms max out to 3000 rpm, toggle off the auto prop pitch to manual engage 0% prop pitch...wait until the rpms fall to say 2500 rpm, reduce the throttle back to 70% or whatever to control the rpms and disengage the mw50. now you are hauling ass, plane probably shaking, and running cool. you got to that speed as fast as possible and didn't let the auto-prop pitch hold you back by converting those excess rpms your sitting on at 3000 rpm to kinetic energy and acceleration. Similar logic applies to zoom climb.

your not supposed to leave the mw 50 on all the time and just open the rads to cool. your not supposed to leave auto prop pitch on all the time. your not supposed to fly around at 100% prop pitch all the time in csp. this is how rookies fly 46. no wonder they like clod so much. they never "got" 46. have fun in clod.

[CaptainDoggles]

Originally Posted by MadBlaster

frustrating. i can see how someone would believe that clod has way better prop pitch control than 46 if they thought that. maybe a good enough reason for some to stop playing 46 and play clod. but you would be completely wrong.

109 - use manual prop pitch 0% to move the rpm/pitch clock down (5% of the time)
- use manual prop pitch 100% to move the rpm/pitch clock up (5% of the time)
- use auto prop pitch as the default (90% of the time)
- always adjust your throttle to keep in the power band (100% of the time)

Example g10, (power band ~ 2500 to 3000)i will use axis values instead of ata and clock angles to make it understandable.

power dive
your cruising along in level flight at 70% throttle with auto prop pitch engaged around 400 kph. Close the rad, engage the mw50, run the throttle to 110% and push the nose down. When the rpms max out to 3000 rpm, toggle off the auto prop pitch to manual engage 0% prop pitch...wait until the rpms fall to say 2500 rpm, reduce the throttle back to 70% or whatever to control the rpms and disengage the mw50. now you are hauling ass, plane probably shaking, and running cool. you got to that speed as fast as possible and didn't let the auto-prop pitch hold you back by converting those excess rpms your sitting on at 3000 rpm to kinetic energy and acceleration. Similar logic applies to zoom climb.

your not supposed to leave the mw 50 on all the time and just open the rads to cool. your not supposed to leave auto prop pitch on all the time. your not supposed to fly around at 100% prop pitch all the time in csp. this is how rookies fly 46. no wonder they like clod so much. they never "got" 46. have fun in clod.

The 109 is different than most other aircraft. Try it in the 190 and it functions as a CSP not a VPP

[MadBlaster]

Originally Posted by CaptainDoggles

The 109 is different than most other aircraft. Try it in the 190 and it functions as a CSP not a VPP

Agree. I still think it is worth over-riding the auto pitch control for 190 a's and d's and the Ta. You probably won't notice the benefit as much though as the 109. Kwaitek would probably tell me I'm wrong about the 190s. That the manual pitch control won't make a difference or too small to worry about. So, just my opinion here on that. Try it in late war spit. It becomes a totally different plane.

[CaptainDoggles]

Originally Posted by MadBlaster

Agree. I still think it is worth over-riding the auto pitch control for 190 a's and d's and the Ta. You probably won't notice the benefit as much though as the 109. Kwaitek would probably tell me I'm wrong about the 190s. That the manual pitch control won't make a difference or too small to worry about. So, just my opinion here on that. Try it in late war spit. It becomes a totally different plane.

In the 190A I agree. The D is good enough that you really don't need manual IMO. As for the Ta 152 everyone is so afraid of it that it's never in the servers so I've only flown it a handful of times.

[CaptainDoggles]

Originally Posted by MadBlaster

your not supposed to leave the mw 50 on all the time and just open the rads to cool. your not supposed to leave auto prop pitch on all the time. your not supposed to fly around at 100% prop pitch all the time in csp. this is how rookies fly 46. no wonder they like clod so much. they never "got" 46. have fun in clod.

Totally not condescending at all or anything

[MadBlaster]

Was flying 190d last night and thought of this post. I don't fly 190 much in the past. Anyway...

I think they modeled a torque limiter for high manifold pressures in the 190. So if you run the mp's up high, say 1.8 ata with the mw50 or added fuel injection on, you can manually increase the rpms to say 3500 rpm at 100% prop pitch. But you can only lower them down to 3000 rpm at 0% prop pitch due to I guess, the torque limiter in effect. I suppose this makes sense to avoid strain on the crankshaft. So, to decrease further, say 2600 at 0% prop pitch, you must lower the mp's (i.e., turn the mw 50/injection off and reduce throttle). The d9 accelerates really good and you can cruise at very high speed at 1.2-1.3 ata with rads closed. None of this rads at 2, 102 throttle and mw50 all day long. That is not optimal in any case. You waste fuel and have no heat reserve for battle.

[orangec]

Can someone explain relations between flight altittude and propeller pitch ?