Klemm Kl 107

Kl 107

Klemm Kl 107 C
Role	Civil utility aircraft
Manufacturer	Klemm, Bölkow
First flight	1940
Number built	7 (1940s) 54 (1950s)

The Klemm Kl 107 was a two-seat light aircraft developed in Germany in 1940. It was a conventional low-wing cantilever monoplane of wooden construction with fixed tailwheel undercarriage. Wartime production totalled only five prototypes and some 20 production machines before the Klemm factory was destroyed by Allied bombing. Following World War II and the lifting of aviation restrictions on Germany, production recommenced in 1955 with a modernised version, the Kl 107B, of which Klemm built a small series before selling all rights to the design to Bölkow. This firm further revised the design and built it as the Kl 107C before using it as the basis for their own Bo 207.

Development

The postwar prototype Klemm Kl 107 in 1957 after modification to Kl 107B standard

The Kl 107 was a development from earlier Klemm designs and was a single-engined two-seat low-wing monoplane with a conventional landing gear.^[1] The first prototype registered D-EXKL first flew in early 1940 powered by a 105 hp Hirth HM500A-1 engine.^[1] Seven prototypes were built at Boblingen in 1940 and 1941 as a private venture but only six had flown by the time the project was stopped by the war.^[1]

After the war Hans Klemm Flugzeugbau joined forces with a small engineering firm Bolkow Entwicklungen as a joint-venture to further develop the Kl 107 design.^[1] The new prototype, registered D-ECAD, was built at Nabern and first flew at Stuggart Airport on 4 September 1956.^[1] Originally flown as a Kl 107 with a Continental C90-12F engine, it was modified as a Kl 107A and then it was re-engined in 1957 with a Lycoming O-320-A2A engine and redesignated Kl 107B.^[1] It was exhibited at the 1957 Paris Air Show.

A production run of 25 aircraft were then built in 1958 and 1959.^[1] In 1959 a Kl 107C variant with a modified cabin was flown and production continued of this variant until the last and 54th post-war aircraft was flown on 27 September 1961.^[1] A four-seat variant was developed as the BO 207.^[2]

Variants

Kl 107: Seven prototypes with Hirth HM500 engines, only six flown.^[1]
Kl 107 V-8: New post-war prototype with a Continental C90-12F engine first flown in 1956.^[1]
Kl 107A: The V-8 prototype modified, it was later re-engined as the Kl 107B.^[1]
Kl 107B: Production variant with a Lycoming O-320-A1A engine, one prototype converted from Kl 107A and 25 production aircraft. One modified as the prototype Kl 107C and the last two completed as Kl 107Cs.^[1]
Kl 107C: Variant with modified cabin with three seats, prototype first flown 3 June 1959. One prototype and 29 production aircraft (including two originally to be Kl 107Bs).^[1]
Kl 107D: Original designation of a four-seat variant that became the Bolkow Bo 207.^[2]

Specifications (Kl 107A)

General characteristics

Crew: one pilot
Capacity: 1 passenger
Length: 8.16 m (26 ft 9 in)
Wingspan: 10.87 m (35 ft 8 in)
Height: 2.06 m (6 ft 9 in)
Wing area: 15.7 m² (169 ft²)
Empty weight: 475 kg (1,047 lb)
Gross weight: 625 kg (1,378 lb)
Powerplant: 1 × Hirth HM 60R, 61 kW (82 hp) each

Performance

Maximum speed: 190 km/h (118 mph)
Range: 670 km (418 miles)
Service ceiling: 5,550 m (18,200 ft)

Notes

1 2 3 4 5 6 7 8 9 10 11 12 13 "The Bolkow Lightplanes Part One". Archive (Air-Britain) 1990 (1): 17–18. 1990. ISSN 0262-4923.
1 2 "The Bolkow Lightplanes Part Two". Archive (Air-Britain) 1990 (2): 49–50. 1990. ISSN 0262-4923.

References

Wikimedia Commons has media related to Klemm Kl 107.

Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. p. 192.
Simpson, R. W. (1995). Airlife's General Aviation. Shrewsbury: Airlife Publishing. p. 85.
Nowarra, Heinz (1983). Die deutsche Luftrüstung 1933-1945. Bonn: Bernard and Graefe. pp. Teil 3, p.161.

Aircraft produced by Klemm

L20 Kl 25 Kl 26 Kl 31 Kl 32 Kl 33 Kl 35 Kl 36 Kl 105 Kl 106 Kl 107 Kl 151 Kl 152 Alpha

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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