Source: Wolfgang Langewiesche - Stick and Rudder; An Explanation of the Art of Flying
I ran across a mushing glide in Wolfgang Langewiesche's - Stick and Rudder; An Explanation of the Art of Flying book and across this topic.
The author says: This gait is sometimes used by a skilled pilot, during an approach to a landing, to steepen the descent and at the same time make sure that the airplane will not pick up excess speed, as it would if the descent were steepened by diving.
I think that the same (or similar) effect can be achieved with forward slip, which, unlike mushing glide, points the nose down, thus giving a pilot a better view during approach while having a higher airspeed as a hedge from the stall. Besides better visibility and higher stall safety margin I assume (but with no scientific proof) that the descent angle with FS might actually be steeper, especially if a pilot slips at Vfe thus creating a large amount of drag.
That being said I wonder which flight condition/maneuver allows steeper approach and if there's any particular benefit of mushing glide to FS? What are your thoughts of this kind of approach?