Austria (glider)
| Austria | |
|---|---|
|
|
| Type: | Glider |
| Design country: | |
| Manufacturer: |
Kegel-Flugzeugbau Kassel |
| Number of pieces: |
1 |
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The Austria was a single-seater glider that was built in 1930 as a one-off for Robert Kronfeld at Kegel-Flugzeugbau Kassel.
History and construction
The aircraft, also known as the Kupper Ku 4 , was designed by August Kupper as a further development of his Ku 1 Kakadu from 1928 with the aim of a low rate of descent and a large glide angle . The self-supporting four-part wing of the high-wing aircraft was sharply pointed , the 5.5 m long outer surfaces had a slightly negative V-position . A 40 cm wide wing section with an aerodynamically designed fuselage-surface transition was firmly connected to the fuselage. The 9.3 m long inner surfaces were trapezoidal. Six fabric-covered flaps each with triple ball-bearing bearings over the entire span served to arch the wing and for transverse control . The cockpit was located in a 0.55 m wide hull boat, which merged into a streamlined structure at the top that accommodated the center wing. At the end of the tubular tail boom to a subdued was tailplane with end plates side row . Both rudders could be deflected outwards by pressing both rudder pedals in order to act as an air brake . The chassis was an air-sprung ash runner held on the side by elastic bands. There were no rear spurs, the runner was supported against the main rib with rubber buffers.
use
After a few test flights, Robert Kronfeld's flight took place on July 19, 1932, from the Wasserkuppe with a length of 41 km. During the next flight on July 22, 1932, the wing broke in a cloud flight , Kronfeld jumped off with the rescue parachute , the aircraft was destroyed on impact.
Technical specifications
| Parameter | Data |
|---|---|
| crew | 1 |
| length | 9.00 m |
| span | 30.00 m |
| height | |
| Wing area | 34.97 m² |
| Wing loading | 13.80 kg / m² |
| Wing extension | 25.7 |
| Wing profile | Gö 652 |
| Glide ratio | |
| Slightest sinking | |
| Payload | 80.00 |
| Preparation mass | 402.40 kg |
| Takeoff mass | 482.40 kg |
| Top speed |
