Differences in Biplanes.
While all biplanes are of the same general construction so far as the main planes are concerned, each aviator has his own ideas as to the "rigging."
Wright, for instance, places a double horizontal rudder in front,
with a vertical rudder in the rear. There are no partitions between the
main planes, and the bicycle wheels used on other forms are replaced by
skids.
Biplane Used by Delagrange.
[Description: Black and white photograph: Biplane with wheels.]
Voisin, on the contrary, divides the main planes with vertical partitions to increase stability in turning; uses a single-plane horizontal rudder in front, and a big box-tail with vertical rudder at the rear; also the bicycle wheels.
Curtiss attaches horizontal stabilizing surfaces to the upper plane; has a double horizontal rudder in front, with a vertical rudder and horizontal stabilizing surfaces in rear. Also the bicycle wheel alighting gear.