Henschel Hs 121

Henschel Hs 121

Role	Advanced trainer
National origin	Germany
Manufacturer	Henscel Flugzeug-Werke A.G.
Designer	Koch
First flight	4 January 1934
Number built	1

The Henschel Hs 121 was the first aircraft built by the German Henschel company. It was a high-wing monoplane with an inline engine, fixed undercarriage and single, open cockpit, designed as an advanced trainer. Only one aircraft was produced, in 1933-4, as a testpiece for the Air Ministry.

Development

Henschel & Son of Kassel were originally known as manufacturers of locomotives, though they later produced lorries and buses. In 1933 they set up an aviation subsidiary based at Schönefeld with a branch at Johannisthal.^[1] New aircraft manufacturers who intended to produce aircraft for the Luftwaffe had first to make a testpiece or masterpiece (Befahigungsnachweis) to prove their competence and the Hs 121 was Henschel's offering.

It was a high-wing braced monoplane, with gull wing roots to enhance the pilot's forward view from the open cockpit set well back behind the trailing edge. The wing was built around two metal spars with metal-covered leading edges and fabric elsewhere. There was solid bracing from near mid-wing to the lower fuselage and from this bracing inwards to the shoulder of the gull wing. The oval fuselage had a metal structure with metal covering. The tail was also a metal structure, with metal covering on the fin and tailplane but with fabric-covered control surfaces. There was wire bracing between fin and tailplane. The spatted main-wheels were carried on streamlined legs which angled outwards from the lower fuselage to increase the track.^[1]

Power was from a 180 kW (240 hp) Argus As 10C inverted in-line engine.^[1]

It flew for the first time at Johannisthal on 4 January 1934. A test flight programme produced some modifications: the fin was braced, the tailplane extended and more bracing was added between the landing gear and the fuselage. Only one Hs 121 was built.

Specifications

Data from Grey 1972, p. 157c

General characteristics

Crew: 1
Length: 7.3 m (23 ft 11 ¹⁄₂ in)
Wingspan: 10.0 m (32 ft 10 in)
Height: 2.8 m (9 ft 2 in)
Wing area: 14.0 m² (150 ft²)
Empty weight: 760 kg (1,672 lb)
Gross weight: 960 kg (2,112 lb)
Powerplant: 1 × Argus As 10C eight-cylinder inverted air-cooled in-line, 180 kW (240 hp)

Performance

Maximum speed: 278 km/h (173 mph)
Cruising speed: 250 km/h (155 mph)
Endurance: 2 hours
Service ceiling: 6,500 m (21,320 ft)
Rate of climb: to 2,000 m (6,560 ft) 8.3 m/s (1,640 ft/min)

References

Wikimedia Commons has media related to Henschel Hs 121.

Citation

1 2 3 Grey 1972, p. 157c

Cited sources

Grey, C.G. (1972). Jane's All the World's Aircraft 1938. London: David & Charles. ISBN 0-7153-5734-4.

Aircraft and missiles produced by Henschel

Hs 117 Hs 121 Hs 122 Hs 123 Hs 124 Hs 125 Hs 126 Hs 127 Hs 128 Hs 129 Hs 130 Hs 132 Hs 293 Hs 294 Hs 295 Hs 296 Hs 297 Hs 298 Hs P.87 Hs P.122

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

Authority control	GND: 7540970-7

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