The Albatros Dr. I was a German fighter triplane derivative of the D.V fitted with three pairs of wings instead of two. Identical in most other respects to the D.V, in the summer of 1917 it was flown side by side with the existing biplane in comparison trials. There was no discernible performance advantage and development was halted at the prototype stage.
The ANF Les Mureaux 170 was a prototype French fighter aircraft of the 1930s. It was a single-engined, single-seat parasol monoplane, but only two were built, the type being rejected for service by the French Air Force.
