Quote:
Originally Posted by TomcatViP
Let's say that you are cruising at alt >5km and want to add some power.
Since your are cruising your eng regime is low with low rpm <2000 and ata <1 (probably 0,  .
When you push the throttle, you'll see that your eng won't react as much as you want with the boost raising only a little as the eng torque is not strong enough to balance the torque of the prop with the amount of air it can ingest at the moment.
In that situation lowering the prop pitch will lower the torque needed to spin the prop giving the eng more torque to raise the (eng) rpm. Once the eng rpm start raising, the compressor can spin up the compressor wheel that will deliver more air in the cylinder.
More air, more fuel, more torque, more power -> the speed increase up to a point that you have a new balance. Obviously once the "ata" & the speed raise you need to coarse back slightly the prop pitch monitoring closely those 3 values (the position of the throttle, the boost level and the rpm gauges).
Note that there is no spectacular results to expect from this but still you'll get some better result and will raise your op ceiling in the beast
~S! |
dont you mean increase the proppitch???at least on the gauge its an increase of it.
when do i know that i overreved the engine enough??
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) 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?
is it advisable to maintain the highest possible ata pressure all the time?
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????