Unfeathered propeller performance
I would like to talk a little about the engine failure event where you might not be able to feather. I'm a multiengine student and I would like to know some climb/descent rates figures from your experience, what performance can be achieved in case of an engine failure after takeoff where you can't feather the prop? I guess in light piston twins there is no climb at all, but what fpm descent can you expect?
And what about part 25 large turboprop? Is there such a large drag from an unfeather propeller? I'm thinking about a King Air, Dash8, Saab or an ATR or other big turboprops like these, would you get a high rate of descent like that having no engine at all? I mean, if you have a double engine failure, let's say you get a 1500-2000 fpm glide, but if you have one engine failed and unfeathered, and the other doing full power, what are the figures? Let's assume medium values for weight and outside temperatures.
Thanks!
Last edited by RichPa; 6th Mar 2013 at 10:26.