User talk:2601:82:C000:E10D:8D74:23C9:4E50:C12A

2601:82:C000:E10D:8D74:23C9:4E50:C12A (talk) 03:37, 12 March 2019 (UTC) There are problems with the statement that: "The aircraft had no rudder as such, the tailplane fins being adjustable but fixed in flight. Turning was by differential aileron and elevator alone."

Aircraft turn by generating a thrust vector orthogonal to the direction of flight. This is almost always done by banking the aircraft, so that the lift vector has a component to the side. The bank is caused by using differential aileron displacement. The elevator is a pitch control that has little effect on bank control. The pictures plainly show rudders. Moreover, the rudders have a substantial movable aft surface, so there seems to be a means to control rudder lateral lift in flight. The possibility is to be allowed that that large aft surface is only ground adjustable, but I find it unlikely.

Bottom lines: The plane in the picture unquestionably has two rudders, conceivably only ground adjustable. Fixed wing aircraft ALWAYS turn by being rolled, the roll caused by differential aileron displacement. The role of the elevators for turning is dubious.

The whole sentence should be revised to reflect the peculiarities of the aircraft. Note that the competing Ercoupe linked the ailerons and rudder to maintain coordinated flight. I think that there is something similar going on here, but I don't know of documentation to support that thought.