Do-335, Pfeil had exotic installation of engines. The tantem installation of the engines has been put in a basis of a design of this plane, patented Claude Dornier in 1937, though the tandem installation of engines was known even from the World War I ("Fokker" n-1 and "Simens-Shukert" DDr-1). The airplane had an exotic X-shaped tail unit, a tricycle landing gear with a nose wheel.
   On an airplane two motors Dymler Benz DB-603 by takeoff power 1750 hp are established. The airplane could make flight to one motor, and at flight on a back motor speed developed with the greater.