Terminal Kl 107

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Terminal Kl 107
Klemm Kl 107.JPG
Type: Light aircraft
Design country:

German Reich NSGerman Reich (Nazi era) German Empire

Manufacturer:

Light aircraft construction Klemm

First flight:

1940

Production time:

1940-1961

Number of pieces:

6 + 55

The Klemm Kl 107 is a civil touring and training aircraft from Leichtflugzeugbau Klemm GmbH .

history

The aircraft was designed in 1940 based on the construction of the Klemm Kl 105 . The Kl 107 is also a cantilever low -wing aircraft in all-wood partial shell construction with a rigid normal chassis and, compared to the Klemm 105, structurally reinforced, enlarged and equipped with more powerful motors. In addition, landing flaps were installed. The two-man crew sit side by side in a closed cabin. A four-cylinder in-line Hirth HM 500 engine with 105 hp serves as the drive . The first flight took place in mid-1939, whereby on July 5, 1939, Klemms chief pilot Helmut Kalkstein with the V1 (D-EXKL) crashed due to a broken wing due to a material defect and was killed. Due to the war, only six of the 20 machines ordered were manufactured by 1941.

Terminal Kl 107 C

After the Second World War, Ludwig Bölkow and Hansjürgen Klemm suggested resuming production in 1954 . The first of these Kl 107A (still identical to the original machines) had its maiden flight on September 4, 1956. In 1959, the modified and now three-seater Klemm Kl 107B followed in wood construction with a 110 kW Lycoming O-320 engine, which was manufactured in series (26 units) by the newly founded Bölkow subsidiary Apparatebau Nabern GmbH . Since the rights had passed to Bölkow, he developed the aircraft further and so shortly afterwards the Kl 107C came onto the market. This had a wider landing gear, a wider fuselage, a controllable pitch propeller and could be equipped with a device for towing gliders. Only 29 units were built up to 1961, which was due to the outdated wooden construction and the narrow cabin. In order to improve sales, the 107C was transformed into the 107D (an even larger four-seater with a more powerful engine) in 1958/59 , which was practically a new design. The prototype with Lycoming four-cylinder engine O-360A with 132 kW had its first flight on October 10, 1960 in Nabern and was renamed in May 1961 first in Bölkow F207 and then in July 1961 in Bölkow Bo 207 . In the same year the second prototype and the first series machine of the Bo 207 took part in the Germany flight.

Technical specifications

Three-sided view of the 1940 version
template Clamp

Kl 107

Clamp

Kl 107 A

Clamp

Kl 107 B

Clamp

Kl 107 C

Bölkow

Bo 207

Bölkow

Bo 207 B

Construction year 1940 1956 1958 1959 1960 1962
crew 1 + 1 (2) 1 + 2 1 + 3
span 10.87 m 10.84 m 10.81 m
length 8.16 m 8.30 m
Wing area 15.10 m² 14.60 m² 15.40 m²
Wing extension 7.8 8.0 7.8
Empty mass 480 kg 530 kg 570 kg 625 kg 700 kg 740 kg
Max. Takeoff mass 740 kg 860 kg 940 kg 970 kg 1200 kg 1240 kg
Top speed 190 km / h 185 km / h 220 km / h 235 km / h 255 km / h 250 km / h
Cruising speed 176 km / h 165 km / h 180 km / h 205 km / h 235 km / h 225 km / h
Rate of climb 3.4 m / s 3.2 m / s 4.0 m / s 3.6 m / s 3.3 m / s
Service ceiling 4200 m 3000 m 4400 m 4150 m 4300 m 4000 m
Range 670 km 760 km 820 km 1250 km 1150 km
Engines Hirth HM 500 (105 HP) Continental C90 (90 HP) Lycoming O-320 A (150 hp) Lycoming O-360 A (180 hp)

literature

Web links

Commons : Klemm Kl 107  - Collection of images, videos and audio files

Individual evidence

  1. ↑ Hanns Klemm breaks new ground. In: FliegerRevue July 2010, pp. 56–59.
  2. ↑ FliegerRevue June 2009, pp. 58–61, Bölkow inherits Klemm