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XyZspineZyX
10-23-2003, 09:21 PM
I just found the function prop pitch. Flying a 109 at full thottle I switch to max pich and away I went at amazing speed for 6 sec. then my engin blew. Pls tell me how to operate it properly so I can enhance my game.

thank you

Belzeebub

XyZspineZyX
10-23-2003, 09:21 PM
I just found the function prop pitch. Flying a 109 at full thottle I switch to max pich and away I went at amazing speed for 6 sec. then my engin blew. Pls tell me how to operate it properly so I can enhance my game.

thank you

Belzeebub

XyZspineZyX
10-23-2003, 09:30 PM
http://www.mudmovers.com/Sims/FB/fb_cem.htm

XyZspineZyX
10-23-2003, 09:32 PM
http://www.icaghq.com/icaghq/Flight%20School/advanced/aircrafthandling/Props.html

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XyZspineZyX
10-23-2003, 09:33 PM
Thing about the 109 (is it just the 109E? The Luft-flyers will doubtless pitch in with the details) is that the prop pitch control really IS a prop pitch control, rather than a Constant Speed Propellor RPM controller is is common on the other planes. This means that if you go to fine pitch at full throttle in level flight, your engine will instantly over-rev massively and it will, as you have discovered, go phut. I don't know if dog-fighting with fully manual prop pitch is practical, but it would be damn hard.

One thing it is useful for though - takeoff. T
Take off in fine pitch, and then switch to auto prop pitch.

I welcome clarificatins, corrections, and expansions.

XyZspineZyX
10-23-2003, 09:35 PM
Toward the end of this thread there is a short blurb on prop-pitch:
http://forums.ubi.com/messages/message_view-topic.asp?name=us_il2sturmovik_gd&id=ywyar



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XyZspineZyX
10-24-2003, 01:10 AM
Think of prop pitch as in a car or any other vehicle that you may have driven with a standard stick. If you are on a freeway going 110kph ( 68 mph ) would you drop your gear into first? That would seriously damage your engine. In a prop aircraft, as you increase speed, decrease the prop pitch. In German aircraft, look at the panel in front of you. You will notice a gauge that is usually to the right- bottom of the artificial horizon indicator.The wording on this panel is U/min x100. This is your engine revolutions. For cruising speeds, I like to have it between 15-20 with cowl flaps at 6-8 setting. Keeps the engine cool in preparation for an air battle. In battle try not to get the tach over the 25 mark on that gauge for extended periods of time with full throttle. You can go over 25 U/min for VERY short periods of time and anything over 30 U/min will destroy your engine very quickly.

Leben Sie heute, für morgen zu k¤mpfen

XyZspineZyX
10-24-2003, 04:07 AM
The russian planes is possible to work with 100% pitch almost all the time (they don´t have automatic), but doesn´t mind lowering it in dives and when cruising high to cool the engine down. Well, it´s mandatory in high speed dives.

The 109 on the other hand is a different story. Take off with 100% pitch and full throttle it will destroy your engine immediately. The E and F2 seems extra sensitive. However, with manual pitch you´ll get much better acceleration at takeoff and handling at lowspeed fights than with automatic. I usually use 90% at takeoff with the 109`s. May use 95% with some later models too. Will get you up much faster.

In turningfights below 300km/h you´ll gain power/handling when using manual pitch, usually 85-90%. Set the manual to 85% after takeoff (lower the throttle temporarily) so you can switch to it fast from automatic when in need. Then in lowspeed vertical turnfights you may need to raise it to 95% - as when landing.

XyZspineZyX
10-24-2003, 09:57 AM
I fly the 109 with manual pitch all the time. It allows me to BnZ a group of russian planes and not worry about them catching up to me in VEF.
I can maintain my high dive speed for a pretty long time after I level out that way.

The important thing is to simply trim the prop to maximum rpm's without redlining. As speed increases you trim it down, and as speed decreases you trim it up.

For some reason trim seems backwards to me in FB.

Every take-off is optional, but every landing is mandatory!

fluke39
10-24-2003, 11:52 AM
i know this seems like a pretty stupid question - but i just can't seem to get my head round this - is fine pitch 1% or 100% ? - also i assume fine pitch is when the prop is set so the blades are at minimum incidence to the air?


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Tully__
10-24-2003, 12:05 PM
fluke39 wrote:
- i know this seems like a pretty stupid question -
- but i just can't seem to get my head round this - is
- fine pitch 1% or 100% ? - also i assume fine pitch
- is when the prop is set so the blades are at minimum
- incidence to the air?
-
-


100% = fine pitch = maximum engine speed

Your assumption is correct.

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Salut
Tully

Tully__
10-24-2003, 12:07 PM
By the way, here is quite an easy to understand article on real world adjustable props: http://www.avweb.com/news/columns/182082-1.html

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Salut
Tully

XyZspineZyX
10-24-2003, 12:36 PM
IMHO, the best way to handle prop pitch is with your ears.

Use the prop pitch up and down keys to keep the engine revs constant just under red line. That way your engine is generating the right amount of power without straining. If you HEAR your revs going up, then key the pitch down to keep the revs in the right spot. If you HEAR your revs dropping below the right rev range, then key it up.

If you choose to fly with manual prop pitch in combat, then you will constantly be varying pitch as you climb, dive, turn etc. I think this really makes you feel like a pilot, juggling pitch/revs+throttle+rudder+ailerons+elevators+ammo+nav.

Have fun!
IV/JG7_4Shades