[TomcatViP]

Originally Posted by David198502

dont you mean increase the proppitch???at least on the gauge its an increase of it.

The Prop pitch is relative to the angle btw the blade and the propeller disc. The more angle the more propulsive force you generate at each blade revolution. But the more torque your engine has to deliver.

Think of a screw'thread. If the pitch is 1mm per each revolution the screw will travel for 1mm at each revolution in the direction of its main axis . If the thread is 1.25mm then 1 rev = 1.25mm travel distance.

In maths, angles are counted positively counterclockwise. [http://www.sosmath.com/trig/Trig1/trig1/trig1.html]

Engineer being what they are, they hve designed here an instrument that looks like a clock but is not. You have to read on the trigonometric way with the pitch increasing when the dial travel counterclockwise. Hence Increasing the blade angle means increasing the pitch on gauge with the dial traveling from right to the left.

Respectively, decreasing the blade angle means decreasing the pitch with the dial moving clockwise

Yes it's weird. Sometime teh worst thing to do is to ask some engineers

Originally Posted by David198502

when do i know that i overreved the engine enough??

It depends of your alt.

But if you look at the ata gauge you'll see that the dial hop to a larger value (around 0.2 ata more) signaling that the compressor blows compressed air to the eng.

With the new ata value you can then slightly increase the pitch (counterclockwise) to use the extra power available for building speed.

Originally Posted by David198502

i observed, that when i go from level flight into a climb, and increase the prop pitch(meaning going from 10 to eleven o clock on the gauge)

he he that is Lowering the pitch (clockwise - remember the positive way is the other one from the right to left))

Originally Posted by David198502

there comes the point, where suddenly the ata pressure decreases slightly the more i increase the prop pitch......is that the point where i should stop increasing the pp?

You might be overreving your engine. I hve to see that.

Originally Posted by David198502

is it advisable to maintain the highest possible ata pressure all the time?

No. Eng put on strain = raise in temp with an increased risk of failure or a lower time available at full power once the fight begin.

Perso I like to begin a fight with a cold engine and for such Cruise at low power (low ata) and high blade angle. The 109 has a very good cruise speed thx to a better aero efficient design. Cruise speed is in the range of a low 350 to a high 400kph TAS for the E model

Originally Posted by David198502

meaning in combat situation, i mainly fly with full throttle and only adjust the pp.through change of the prop pitch, the pressure changes as well, ....
so if i maintain 1,325ata with full throttle...would that be the way to go????

YES !

However playing with the throttle is of great help in a fight. Hence I am ctly handling both command unless I am B&Zing with both value only slightly moving around the 1.32/10h values just like you.

~S!