O.Thetford, P.Gray German Aircraft of the First World War (Putnam)
Kondor D I
Designed by Rethel and Ehrhardt the Kondor D I appeared in the spring of 1918. The wing arrangement followed that of the Albatros, with single-spar lower wing and vee interplane struts. Engine, 110 h.p. Oberursel U II rotary. The D I participated in the second D types Competition in June 1918 at a loaded weight of 568 kg. (1,250 lb.); it climbed to 5,000 m. (16,400 ft.) in 30.6 min.
Kondor D II
A contemporary development of the D I, the D II differed principally in having a more conventional wing structure, and was fitted with ailerons at all four tips, those on the upper wing being balanced. Also competing in the second D types Competition, the D II climbed to 5,000 m. (16,400 ft.) in 33.1 min. at a loaded weight of 554 kg. (1,218 lb.). Engine, 110 h.p. Oberursel U II. Span, 7.59 m. (24 ft. 10 7/8 in.). Length, 4.86 m. (15 ft. 11 1/2 in.). Height, 2.41 m. (7 ft. 10 7/8 in.). Area, 13.3 sq.m. (144 sq.ft.). Weights: Empty, 370 kg. (814 lb.). Loaded, 550 kg. (1,210 lb.). Speed, 170 km.hr. (106.25 m.p.h.). Note unusual painting of cross on fin instead of on the rudder.
W.Green, G.Swanborough The Complete Book of Fighters
KONDOR D 1 Germany
Designed by Rethel and Ehrhardt in parallel with the triplane,the D 1 single-seat fighter was an unequal-span single-bay staggered biplane powered by a 100 hp Gnome-Monosoupape rotary engine. Following Albatros practice in having a single-spar lower wing with V-type interplane strutting, the D 1 was dubbed unofficially and somewhat scathingly as the Kondorlaus and was extensively test flown by Ehrhardt. Intended armament comprised two synchronised LMG 08/15 machine guns with 500 rounds. Flight testing was initiated in the late autumn of 1917, but performance proved disappointing, this possibly being the cause of the prototype's unofficial appellation. In the spring of 1918, when Ehrhardt left the Kondor Flugzeugwerke for health reasons, redesign of the aircraft was undertaken by Walter Rethel as the D 2.
Empty weight, 855 lb (388 kg).
Loaded weight, 1,252 lb (568 kg).
Span, 24 ft 11 1/4 in (7,60 m).
Length, 15 ft 10 7/8 in (4,85 m).
Height, 7 ft 10 1/2 in (2,40 m).
Wing area, 143.7 sq ft (13,35 m2).
KONDOR D 2 Germany
The D 2 single-seat fighter was essentially similar to the D 1, but changes included a two-spar lower wing with parallel interplane bracing struts. Power was provided by a 110 hp Oberursel Ur II rotary engine and armament comprised two synchronised LMG 08/15 machine guns. The D 2 was first flown in May 1918, and two examples participated in the second D-type contest held at Adlershof in June 1918. These were temporarily referred to for convenience as the D I (w/n 200) and D II (w/n 201), one having ailerons on all four wings and one apparently having ailerons on the upper wings only. Oblt Herman Goring, in his report on the potential of these Kondor fighters, gave his opinion that they were "very fine in regard to flight characteristics, but not worthy of further consideration owing to their poor performance". No further development of the D 2 was undertaken.
Max speed, 109 mph (175 km/h).
Time to 9,840 ft (3 000 m), 10.4 min.
Endurance, 1.5 hrs.
Empty weight, 838 lb (380 kg).
Loaded weight, 1,235 lb (560 kg).
Span, 24 ft 10 4/5 in (7,59 m).
Length, 15 ft 11 3/4 in (4,87 m).
Height, 7 ft 10 9/10 in (2,41m).
Wing area, 143.59 sq ft (13,34 m2).