Akaflieg Berlin B6
| Akaflieg Berlin B6 | |
|---|---|
|
|
| Type: | Glider |
| Design country: | |
| Manufacturer: | |
| First flight: |
August 1938 |
| Number of pieces: |
1 |
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The B6 was a single-seat, cantilevered middle-decker glider with Junkers double wing of the Academic Aviation Group of the Technical University Berlin-Charlottenburg with the registration D-4-635.
construction
The aircraft designed by Friedrich Lange, Gotthold Peter and Ernst-Günther Friedrichs had a fabric-covered tubular steel framework fuselage front part with a retractable, sprung, brakable main landing gear and a tail unit beam in a wooden shell construction. The pendulum elevator, which was set very high to avoid damage during landing, had Flettner rudders for trimming . A symmetrical double wing acted as the vertical tail.
Special features were the double wing used for the first time in sailplane construction as a wing, which enables low airspeed, the use of the fiber composite material hard paper for planking the flaps and the automatic elevator trim, which is dependent on the flap position. Quick-release fasteners were used to assemble the 16-meter-spanning, two-part wooden wing on the fuselage - as was the case with the B5 .
equipment
The equipment included a removable Askania instrument panel with an electric turn indicator , artificial horizon , variometer , speedometer and altimeter , compass and a clock.
use
The aircraft took part in the 1938 Rhön competition and flew 350 kilometers from the Wasserkuppe to 's-Hertogenbosch in the Netherlands.
Technical specifications
| Parameter | Data |
|---|---|
| crew | 1 |
| length | 6.20 m |
| span | 16.00 m |
| height | 1.25 m |
| Wing area | 14.60 m² |
| Wing extension | 17.53 |
| Wing profile | NACA 43012 |
| Glide ratio | 30 at 68 km / h |
| Slightest sinking | 0.58 m / s at 54 km / h |
| Payload | 85 kg |
| Empty mass | 155 kg |
| Takeoff mass | 240 kg |
| Top speed | 225 km / h |
See also
literature
- Frank-Dieter Lemke, Rolf Jacob: The Academic Fliegergruppen in Germany until 1945 . Part 1. In: Flieger Revue extra . No. 29 , March 2010, p. 52 f .
Web links
- B6 in the J2mcL Planeurs glider database
- FFG Berlin B6 in Luftarchiv.de
Individual evidence
- ↑ a b Hans Joachim Wefeld : 75 years of Akaflieg Berlin . Academic Fliegergruppe Berlin, Berlin 1995, p. 62 .
- ↑ Glider B 6 . In: Aviation . No. August 16 , 1938, p. 418-420 .
- ↑ a b c Helmut Schneider (Ed.): Airplane type book . 5th revised and expanded edition. Herm. Beyer Verlag, Leipzig 1944, p. 283 .
