Dornier P 256

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

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, per Dornier tender)

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

Maximum speed: 882 km/h (548 mph)
Range: 1,550 km at 630 km/h (963 mi at 391 mph)
Service ceiling: 29,600 ft (9,020 m)
Rate of climb: 672 m/min (initial) (2205 ft/s)
Wing loading: 276 kg/m² (56.5 lb/ft²)

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

References

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Schick and Meyer, p. 123
↑ 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

Wikimedia Commons has media related to Dornier aircraft.

Richard Lewis Mendes' Luft '46 images

Dornier and Zeppelin-Lindau aircraft

Zeppelin-Lindau 1914-1919	Rs.I Rs.II Rs.III Rs.IV C.I C.II CS.I CL.II D.I V1

Dornier designations 1919-1933	Do A Do B Do C Do D Do E Do F Do G Do H Do J Do K Do L Do N Do O Do P Do Q Do R Do S Do T Do U Do V Do X Do Y Delphin Komet Libelle Merkur Spatz Wal

RLM designations 1933-1945	Do 10 Do 11 Do 12 Do 13 Do 14 Do 15 Do 16 Do 17 Do 18 Do 19 Do 20 Do 22 Do 23 Do 24 Do 25 Do 26 Do 29 Do 212 Do 214 Do 215 Do 216 Do 217 Do 317 Do 318 Do 335 Do 417 Do 435 Do 635 P.59 P.85 P.174 P.184 P.192 P.231 P.232 P.238 P.247 P.252 P.254 P.256 P.273 P.1075

Dornier designations post-1945	Do 24 Do 25 Do 27 Do 28 Do 29 Do 31 Do 32 Do 34 Do 128 Do 132 Do 228 Do 231 328 328JET 428 528 728JET 928JET Aerodyne Alpha Jet Projekt 621 Seastar S-Ray 007

See also Claudius Dornier and Dornier Museum Friedrichshafen

Reich Air Ministry aircraft designations

1 to 100	B 9 Gö 9 Do 10 Do 11 Wn 11 Do 12 Do 13 Do 14 Do 15 Wn 15 Do 16 Wn 16 Do 17 Do 18 Do 19 Do 20 Do 22 Do 23 Do 24 Kl 25 Do 26 Kl 26 M 27 Do 29 Kl 31 Kl 32 W 33 L 33 W 34 Kl 35 Kl 36 HD 37 HD 38 G 38 DFS 39 BV 40 DFS 40 A 40 Fw 42 He 42 Fw 43 HD 43 Fw 44 He 45 He 46 Ju 46 Fw 47 Ju 47 K 47 A 48 He 49 Ju 49 He 50 A 50 He 51 K 51 Ju 52 K 53 NR 54 Fw 55 NR 55 Fw 56 Fw 57 Fw 58 He 58 He 59 He 60 Ju 60 Fw 61 He 61 Fw 62 He 62 He 63 Ar 64 He 64 Ar 65 He 65 Ar 66 He 66 Ar 67 Ar 68 Ar 69 He 70 He 71 He 72 He 74 Ar 76 Ar 77 Ar 79 Ar 80 Ar 81 Ju 85 Ju 86 Ju 87 Ju 88 Ju 89 Ju 90 Ar 95 Ar 96 Fi 97 Fi 98 Fi 99 He 100

101 to 200	Al 101 Al 102 Al 103 Fi 103 Fh 104 Kl 105 Kl 106 Kl 107 Bf 108 Bf 109 Bf 110 He 111 He 112 He 113 He 114 He 115 He 116 Hs 117 He 118 He 119 He 120 Hs 121 Hs 122 Hs 123 Hs 124 Hs 125 Hs 126 Hs 127 Hs 128 Hs 129 Hs 130 Bü 131 Hs 132 Bü 133 Bü 134 Ha 135 Ha 136 Hü 136 Ha 137 BV 138 Ha 139 Ha 140 BV 141 BV 142 BV 143 BV 144 Go 145 Go 146 Go 147 Ju 147 Go 149 Go 150 Kl 151 Ta 152 Kl 152 Ta 153 Ta 154 BV 155 Fi 156 Fi 157 Fi 158 Fw 159 Ju 160 Bf 161 He 162 Bf 162 Bf 163 Me 163 Me 164 Fi 166 FK 166 Fi 167 Fi 168 He 170 He 172 He 176 He 177 He 178 Bü 180 Bü 181 Bü 182 Ta 183 Fl 184 Fl 185 Fw 186 Ju 186 Fw 187 Ju 187 Ju 188 Fw 189 Fw 190 Fw 191 Ao 192 DFS 193 DFS 194 Ar 195 Ar 196 Ar 197 Ar 198 Ar 199 Fw 200

201 to 300	Si 201 Si 202 DFS 203 Si 204 Fw 206 Me 208 Me 209 Me 209 (1943) Me 210 Hü 211 Do 212 Do 214 Do 215 Do 216 Do 217 Hs 217 He 219 He 220 BV 222 Fa 223 Fa 224 Ao 225 Fa 225 BV 226 Ho 226 FGP 227 DFS 228 Ho 229 DFS 230 Ar 231 Ar 232 Ar 233 Ar 234 Do 235 BV 237 BV 238 Fw 238 Ar 239 Ar 240 Go 241 Go 242 Go 244 BV 246 Ju 248 BV 250 Fw 250 Ho 250 Ho 251 Ho 252 Ju 252 Fi 253 Ho 253 Ta 254 Ho 254 Fi 256 Sk 257 Fw 261 Me 261 Me 262 Me 263 Me 264 Fl 265 Me 265 Fa 266 Ho 267 Ju 268 Fa 269 He 270 We 271 Fw 272 He 274 He 275 He 277 He 278 He 280 Fl 282 Fa 283 Ta 283 Fa 284 Fl 285 Ju 286 Ju 287 Ju 288 Ju 290 Me 290 As 292 Hs 293 Hs 294 Hs 295 Ar 296 Hs 296 Hs 297 Hs 298 Fw 300

301-	Me 309 Me 310 Do 317 Do 318 He 319 Me 321 Ju 322 Me 323 Me 328 Me 329 Fa 330 DFS 331 DFS 332 Fi 333 Me 334 Do 335 Fa 336 Fl 339 E.340 WNF 342 He 343 Rk 344 So 344 Go 345 DFS 346 Rk 347 Ba 349 Ju 352 Me 362 Me 364 Ju 388 Ju 390 Fw 391 Ar 396 Ta 400 Me 409 Me 410 Do 417 He 419 ZMe 423 Ar 430 Ka 430 Ar 432 Do 435 Ar 440 Ju 452 Me 462 Ju 488 Fw 491 Me 509 Me 510 He 519 ZSO 523 Ar 532 Do 535 E.555 Me 609 Ar 632 Do 635

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