A.Kay Junkers Aircraft and Engines 1913-1945 (Putnam)

Junkers J5

  This was a study for a single-seat, low-wing monoplane fighter which was not built. An attempt was made to streamline the large airscrew spinner with the engine cowling, but satisfactory cooling arrangements could not be devised.
  Various other studies were made under the J5 designation, although exact information is unavailable. Examples are the J5 I and J5 II, which each had the engine moved to the rear of the fuselage. Both Mercedes D IIIa and Siemens Sh2 engines were considered for J5 designs.


Data (J 5 I): Span 11.8m (38ft 8 1/2in); length 8.0m (26ft 3in); wing area 20.0m2 (215 sq ft); empty weight 465kg (1,025lb); loaded weight 660kg (1,455lb).



Junkers J6

  With the J6 parasol (high-wing) fighter, a new design was begun that, aerodynamically at least, was unrelated to earlier Junkers’ work but reflected the popularity of parasol fighters (such as those from Fokker) with fighter pilots. It resulted in a short, stubby fighter with a Siemens ShIII 158hp radial engine and an underfuselage fuel tank. Construction of the J6 was begun in the summer of 1918 but stopped when half completed at the war’s end in November.


Data: Span 8.0m (26ft 3in); length 5.6m (18ft 4 1/2in); wing area 12.0m2 (129 sq ft); empty weight 420kg (926lb); loaded weight 615kg (1,356lb); max. speed 190kph (118mph); range 270km (168 miles).