Arado Ar 231

Ar 231

Arado Ar 231 Model front view shows the special wing construction
Role	Submarine-borne reconnaissance floatplane
National origin	Germany
Manufacturer	Arado Flugzeugwerke
Number built	6

The Arado Ar 231 was a light-weight floatplane, developed during World War II in Germany as a scout plane for submarines by Arado. The need to be stored inside the submarine necessitated compromises in design that made this single-seat seaplane of little practical use.

Design and development

Designed from the outset for use on U-boat "cruisers", like the Type XI B, the Ar 231 was a light parasol-wing aircraft. The aircraft was powered by a 119 kW (160 hp) Hirth HM 501 inline engine, weighed around 1,000 kg (2,200 lb), and had a 10 m (33 ft) wingspan. The design led to a simple and compact aircraft that could be fitted into a storage cylinder only 2 m (6.7 ft) in diameter. For ease of storage, the Ar 231's wings featured detachable sections that two operators could remove in less than six minutes. One unusual feature was an offset wing design, with the right wing root attaching to the wing's tilted center section (elevated above the fuselage, as on all parasol-wing designs) and lower than the left wing root, to allow the wings to be quickly folded up.

Arado Ar 231 Model side view

Operational history

Testing soon revealed the Ar 231s to be fragile, underpowered, and difficult to fly even during calm weather, and as a result, development ended in favour of the Focke Achgelis Fa 330 gyroglider. Some of the testing was done on the auxiliary cruiser Stier, two of the six prototypes being taken on one voyage.

Specifications (Ar 231 V1)

Data from German Aircraft of the Second World War ^[1]

General characteristics

Crew: One
Length: 7.81 m (25 ft 7½ in)
Wingspan: 10.18 m (33 ft 4½ in)
Height: 3.12 m (10 ft 2¾ in)
Wing area: 15.2 m² (164 ft²)
Empty weight: 833 kg (1,837 lb)
Loaded weight: 1,050 kg (2,315 lb)
Powerplant: 1 × Hirth HM 501 six-cylinder inverted inline engine, 119 kW (160 hp)

Performance

Maximum speed: 170 km/h (92 kn, 106 mph)
Cruise speed: 130 km/h (70 kn, 81 mph)
Range: 500 km (270 nmi, 310 mi)
Service ceiling: 3,000 m (9,843 ft)
Wing loading: 69.1 kg/m² (14.1 lb/ft²)
Power/mass: 113 W/kg (0.069 hp/lb)
Endurance: 4 hr

References

↑ Smith, J.R. and Kay, Antony L. German Aircraft of the Second World War. London: Putnam, 1972. ISBN 0-85177-836-4.

External links

Wikimedia Commons has media related to Arado Ar 231.

Arado Ar 231

Aircraft produced by Arado Flugzeugwerke

Ar 64 Ar 65 Ar 66 Ar 67 Ar 68 Ar 69 Ar 76 Ar 79 Ar 80 Ar 81 Ar 95 Ar 96 Ar 195 Ar 196 Ar 197 Ar 198 Ar 199 Ar 231 Ar 232 Ar 233 Ar 234 Ar 240 Ar 296 Ar 396 Ar 432 Ar 440 Ar 532 E.340 E.377 E.380 E.381 E.500 E.530 E.555 E.560 E.561 E.580 E.581 E.583 L I L II S I SC I SC II SD I SD II SD III SSD I V I W 2

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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