O.Thetford, P.Gray German Aircraft of the First World War (Putnam)

Pfalz D XIV
   This experimental machine was basically a slightly enlarged D XII with high compression 200 h.p. Benz Bz IV u. motor. It could be distinguished visually from the D XII by the larger vertical fin. Engine, 200 h.p. Benz Bz IV u. Span, 10.0 m. (32 ft. 9 3/4 in.). Length, 6.32 m. (20 ft. 8 3/4 in.). Height, 2.7 m. (8 ft. 10 1/4 in.). Area, 25.43 sq.m. (275 sq.ft.). Weights: Empty, 833 kg. (1,833 lb.). Loaded, 1,032 kg. (2,270 lb.). Speed, 180 km.hr. (112.5 m.p.h.) at 4,000 m. (13,120 ft.). Climb, 1,000 m. (3,280 ft.) in 3 min. 5,000 m. (16,400 ft.) in 26.1 min. Duration, 1 1/2 hr. Armament, twin Spandau machine-guns.

W.Green, G.Swanborough The Complete Book of Fighters

PFALZ D XIV Germany

   The D XIV, which underwent Typen-Prufung on 15 May 1918, was very similar to its immediate predecessor, but featured wings of greater span and area, a deeper fuselage, an enlarged vertical fin and a high-compression Benz Bz IVu six-cylinder water-cooled engine. Structurally similar to preceding Pfalz fighters and carrying the standard twin-gun armament, the D XIV participated in the second D-type Competition, but did not demonstrate any appreciable advance over the D XII, development being discontinued.

Max speed, 112 mph (180 km/h) at 13,125 ft (4 000 m).
Time to 3,280 ft (1000 m), 3.0 min.
Endurance, 1.5 hrs.
Empty weight, 1,836 lb (833 kg).
Loaded weight, 2,275 lb (1032 kg).
Span, 32 ft 9 2/3 in (10,00 m).
Length, 20 ft 8 4/5 in (6,32 m).
Height, 8 ft 10 1/4 in (2,70 m).
Wing area, 273.73 sq ft (25,43 m2).

J.Herris Pfalz Aircraft of WWI (A Centennial Perspective on Great War Airplanes 5)

Pfalz D.XIII & D.XIV

   The Pfalz D.XIII is not positively identified, but may have been a single-bay version of the D.XIV analogous to the D.VII being a single-bay version of the D.VIII. The Pfalz D.XIV was essentially a D.XII fitted with the heavier, more powerful 200 hp Benz Bz.IVu engine. To support the heavier engine the wing area was increased by extending the span a meter longer than the D.XII; the construction and airfoil section were the same.
   The Pfalz D.XIV was ordered into production alongside the D.XII, but flight tests revealed only a slight performance increase. The D.XIV's loaded weight of 1,032 kg was substantially more than the D.XII's loaded weight of 892 kg due to its heavier engine and wing, and this increase of nearly 16% negated much of the effect of the increased power. Larger ailerons were fitted to maintain roll rate, which otherwise would have been reduced somewhat by the longer wing span. The D.XIV was also afflicted by the same cooling problems that delayed production of the D.XII. Because the D.XIV offered such a small performance increase and its Benz Bz.IV engine was also needed for the important LVG C.VI and Halberstadt C.V two-seaters already in production, Pfalz D.XIV production was terminated after a few machines were built, and it apparently did not see active service.

Pfalz D.XIV Specifications
Engine: 200 hp Benz Bz.IVu
Wing: Span Upper 10.00 m
Span Lower 9.15 m
Chord Upper 1.40 m
Chord Lower 1.40 m
Dihedral Lower 1 deg
Gap 1.47 m
Stagger 0.38 m
Area 25.43 sq m
General: Length 6.32 m
Height 2.70 m
Loaded weight 1,032 kg
Maximum Speed: 190 kmh
Climb: 5000m 24.2 min

Pfalz D.XIV Production Orders
Order Date Quantity Serial Numbers
April 1918 50 2800-2849/18