0% mixture and the engine last

[Solmyr]

Well, I made a small test (internet connection is down at my home, so was a nice moment) :

 

Yak-1, ~3000 feet, full throttle, then I slow down the mixture until 0% : the engine seems to suffer of course, RPM falls but doesn't grip for long minutes !   I thought it wouldn't have last more than a few seconds...

Is it normal ? 

 

(Please consider the question about the Yak like any other aircraft, or at least don't take advantage of this topic to go in an umpteeth uber-plane complain etc...)

Edited February 13, 2015 by Solmyr

[71st_AH_Mastiff]

the wind pushing on the prop will keep it turning.

[Alkyan]

I have no idea but maybe 0 percent mixture is 0 percent of the mixture's throttle/axis and even at minimum there is fuel in the mixture?

[unreasonable]

Assuming that you were at full rich and then moved to full lean mixture, there is still fuel going into the engine: the lean end of the mix control does not actually mean 0% fuel.

 

Some engines will cut out if the mixture is too far out either way  - perhaps the Yak engine mix control did not allow such a large range of mix, thus avoiding cuts?

 

Or perhaps the game formula is more pilot friendly than the real engine.

 

Interesting to find out the answer to this....

[312_Tygr]

Well, in my limited experience with piston engines, 0% mix usually means no fuel. In most small airplanes you kill the engine by cutting the mixture. Now, in WW II planes - I don't know. However - if you do this in flight, and keep your magnetos on, the engine will pick up as soon as you add the mixture, so no big difference from that standpoint.

 

Incidentally, that's also the reason why we always make sure battery, magnetos and ignition are off when we turn the prop on the ground, because you don't want to accidentally start the engine. BTW, we had an incident when one of the guys got a nasty gash to the head just because the magneto on a Cessna was faulty, and the engine fired once during turning the prop...

[Solmyr]

the wind pushing on the prop will keep it turning.

 

No, no, the engine keeps giving some power of course, that's where is the question.

 

I have no idea but maybe 0 percent mixture is 0 percent of the mixture's throttle/axis and even at minimum there is fuel in the mixture?

 

Yup, I'd tend for this explanation by default.