[ArcticViper]

it is where the prop swivels and doesnt grab as much air or it grabs more i dont no

Here's an idea... look it up before posting a basically empty post.

It's what wikipedia.org or howstuffworks.com are for...

When a prop is feathered it is set to its '0%' position, so the tips of the blades are more/less pointing straight into the relative wind so the drag on the dead prop is minimized. So it's kinda like stream lining it. I also know that in order to feather a prop or make any prop adjustment the engine has to be running because the blades twist to the desired angle using oil pressure and a weight system under the spinner. So if the engine is dead and there is no oil pressure then the blades wont adjust.

Yes and no.

In real life the prop is set to full coarse when feathered (meaning 100% pitch) not 0%, the game's got it backwards as far as my knowledge of constant speed propellers goes... I might be wrong, but the constant speed system in the game doesn't work for me, as it makes no sense whatsoever to have 100% pitch for takeoff and 100% pitch for cruise, and change of pitch only makes a marginal difference... :roll:

... I also know that in order to feather a prop or make any prop adjustment the engine has to be running because the blades twist to the desired angle using oil pressure and a weight system under the spinner. So if the engine is dead and there is no oil pressure then the blades wont adjust.

Not fundamentally wrong, but strictly based on an aircraft to aircraft basis, you cannot make a generalized statement such as that, as this is only specific for a fully hydraulic system.

Some aircraft have only the hydraulic control meaning they utilize a "shuttle valve" in the hydraulic system to adjust the props, and if you lose pressure, the prop will remain fixed at the position it was set to (provided you don't use the spool down pressure the engine gives prior to seizure to set it to feather)

Some other aircraft have a "spring return" valve, which will force the prop to feather in case of loss of oil pressure in the hydraulic lines.

Other aircraft have a totally different system, which utilizes counterweights to adjust the RPM to the desired setting at a given powersetting, that's something I'm not fully confident to explain, and therefore will refrain from doing so...

Seriously, this is some complicated stuff, and not for the faint of heart, so if you have no idea of constant speed props and the likes, just select the auto function in IL-2, it's much simpler and gets you from A to B and back without you having to worry about it :wink: