Dornier Do 11

Do 11
	300px
	Dornier Do-11 with Bulgarian Insignia
Role	Medium bomber
Manufacturer	Dornier
First flight	7 May 1932
Introduction	1932
Number built	372
Variants	Dornier Do 13; Dornier Do 23

The Dornier Do 11 was a German medium bomber developed in secret in the early 1930s. It was originally called the Dornier F before being renamed by the Reichsluftfahrtministerium (RLM) in 1933 and was considered a heavy bomber at the time. It came into service in 1932, a continuation of a line of bomber designs going back to the Dornier Do P in 1930 and the Dornier Do Y in 1931. The line would continue to develop with the Dornier Do 13 and Dornier Do 23.^[1]

Design and development

One of the main features the Do 11 tested was a retractable undercarriage, but, due to problems with it, it was often left locked down. The aircraft entered service under the guise of a freight transport, and was used with the German railway in conjunction with Deutsche Luft Hansa, so that it could be shown publicly. What it was actually used for was as a trainer for the still secret Luftwaffe. The aircraft had a number of problems, which resulted in some crashes, and was generally unpopular with pilots. Especially problematic were wing vibrations which resulted in various precautions and modifications. Attempts were made to correct its faults, resulting in the so-called Do 11D, the last model with the Do 11 name. The Do 13 was a "simplified" Do 11 and came next, but had so many problems of its own that it did not fully enter service, with several of the first planes off the assembly line crashing. The later Do 23 corrected many faults of the design, but was still a lackluster aircraft, and was withdrawn from service by 1936 and replaced by superior aircraft that had since been developed. The Do 11 is noteworthy as having served in secret and having been the main heavy bomber of the quietly developing Luftwaffe, if only for a short while. It was also the first to have two large engines as opposed to its predecessors the Y and P, which used three and four engines respectively.^[1]

Variants

Data from:'^[1]

Do F: Prototype of the Do 11 before re-designation by the RLM.
Do 11C: First production version powered by 2 Siemens-Halske Sh.22B-2 radial engines.
Do 11D: Second production version with a shorter span wing primarily introduced to alleviate extreme vibration of the Do 11C wings.

Operators

Bulgaria

Bulgarian Air Force

Germany

Luftwaffe

Specifications (Do 11D)

Data from Aircraft of the Third Reich^[1]

General characteristics

Crew: 4
Length: 18.8 m (61 ft 8 in)
Wingspan: 26.3 m (86 ft 3 in)
Height: 5.49 m (18 ft 0 in)
Wing area: 107.8 m² (1,160 sq ft)
Empty weight: 5,978 kg (13,179 lb)
Max takeoff weight: 8,200 kg (18,078 lb)
Fuel capacity: 1,545 L (340 imp gal)
Powerplant: 2 × Siemens-Halske Sh.22B-2 9-cyl. air-cooled radial piston engines, 485 kW (650 hp) each for take-off

447 kW (599 hp) at 1,500 m (4,921 ft)

Propellers: 4-bladed fixed pitch wooden propellers

Performance

Maximum speed: 260 km/h (162 mph; 140 kn)
Cruising speed: 225 km/h (140 mph; 121 kn) at 1,000 m (3,281 ft)
Range: 960 km (597 mi; 518 nmi) with 1,545 L (340 imp gal) of fuel
Service ceiling: 4,100 m (13,451 ft)
Time to altitude: 1,000 m (3,281 ft) in 7 minutes

3,000 m (9,843 ft) in 36 minutesArmament

Guns: 3 x manually aimed 7.92 mm (0.312 in) MG 15 machine guns, 1 in each of open nose, dorsal and ventral positions
Bombs: up to 1,000 kg (2,205 lb) of bombs

Notes

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References

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Green, William. Warplanes of the Third Reich. New York:Doubleday, 1972. ISBN 0-385-05782-2.

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[1]

v t e 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

v t e 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

Dornier Do 11

Contents

Design and development

Variants

Operators

Specifications (Do 11D)

See also

Notes

References

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