Ref untitled (cast-safety.org) 原文: “On a variable pitch propeller, the drag can be minimized by rotating the blades until they are edgewise to the flight direction. This is called feathering the propeller.”   Why we need “feathering the propeller”?  /  When we need to “feathering the proeller”? When an engine is shutdown in flight, an … Continue reading What’s Feathering? (Propeller)