Dornier P 256

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Do P 256
Role Night fighter
Manufacturer Dornier Flugzeugwerke
Status Project
Primary user Luftwaffe
Number built None built

The Dornier P 256 was a turbojet night fighter proposed by Dornier for the Luftwaffe toward the end of the Second World War.[1] It was never built.

Development[edit]

Developed from Dornier's unusual centerline thrust fighter project, the Do 335,[1] the P 256 was to meet a Luftwaffe requirement issued 27 February 1945.[1] It was designed to carry a crew of three (pilot, radar operator, and navigator), with pilot and radar operator together under the canopy, while the navigator was in the fuselage,[1] an idea copied from Arado.[1] Departing from centerline thrust, it was to have two Heinkel HeS 011 engines[1] of 1,300 kPs (2,865 lb-fc) each, podded under the wings in the fashion of the Me 262.[1] The low-mounted wing was unswept, and had an aspect ratio of 5.8:1.[1]

Designed armament was four 30 mm (1.2 in) MK 108 cannon in the nose;[1] a field conversion kit was to retrofit two MK 108s in a Schräge Musik configuration.[1] A fighter-bomber variant would have carried two 500 kg (1,100 lb) bombs.[2]

Its loaded weight would have included 3,750 kg (8,270 lb) of fuel,[1] giving a wing loading of 276 kg/m2 (56.5 lb/ft2).[1] Maximum speed was achieved at 8,000 m (26,000 ft),[1] maximum range at 6,000 m (20,000 ft).[1] Endurance with 4,000 kg (8,800 lb) fuel was calculated as 2.6 hours.[1]

Its electronic suite would have included FuG 24SE with ZVG 24, FuG 29, FuG 25a or c, and FuG 244 Bremen with Gnome weapon triggers.[1]

Criticized for having poor cross-sectional area and unduly large tail surfaces, it was not adopted.[1]

Specifications (projected, from Dornier tender)[edit]

Data from Schick, Walter, and Meyer, Ingolf. Luftwaffe Secret Projects: Fighters, 1939-45, p.123. Leicester: Midland Publishing, 1997 (Eng. tr. ed.).

General characteristics

  • Crew: three (pilot, radar operator, and navigator)
  • Length: 13.6 m (44 ft 7 in)
  • Wingspan: 15.45 m (50 ft 8½ in)
  • Height: 5.5 m (18 ft)
  • Wing area: 41 m2 (441 ft2)
  • Empty weight: (with full equipment) 6,860 kg (15,123 lb)
  • Loaded weight: 11,300 kg (24,911 lb)
  • Powerplant: × 2 x Heinkel HeS 011 turbojet

Performance

Armament

• Four 30 mm (1.2 in) MK 108 cannon (optional two 30 mm (1.2 in) MK 108 cannon in Schräge Musik oblique mount)

Related developments[edit]

References[edit]

  1. ^ a b c d e f g h i j k l m n o p q Schick and Meyer, p. 123
  2. ^ Luft'46 - Dornier P 256
  • Schick, Walter, and Meyer, Ingolf. Luftwaffe Secret Projects: Fighters, 1939-45, p. 123. Leicester: Midland Publishing, 1997 (Eng. tr. ed.).

External links[edit]