The D.IV was designed to test a
geared version of the 120 kW (160 hp) Mercedes D.III
engine. Unlike the ungeared version, the geared engine was completely enclosed within the
fuselage. The airframe basically combined the
D.II wing cellule with the
D.Va fuselage along with minor alterations to the
rudder balance and the
horizontal stabilizer.[1]
Three examples were ordered in November 1916, but only one was flown, which was tested with several types of
propeller, but excessive vibration problems and limited performance increase precluded further development.[1][2]
Specifications
Data fromGerman Aircraft of the First World War and The Complete Book of Fighters.[1][2]