BSV Luftikus
| BSV Luftikus | |
|---|---|
|
|
| Type: | Glider |
| Design country: | |
| Manufacturer: |
Berlin Glider Club (BSV) |
| First flight: |
May 1929 |
| Number of pieces: |
3 |
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The BSV Luftikus was a single-seat glider belonging to the Berlin Glider Club (BSV), which took part in the Rhön competitions on the Wasserkuppe from 1929 to 1933 .
history
On April 2, 1920, the model flight club Berlin was founded , whose members Willy Drude, Ernst Schalk, Paul Schlack and Friedrich Wilhelm Richter flew with their own aircraft designs at the Rhön competitions 1920–1923. After being renamed the Berliner Modell- und Segelflugverein in 1921, the club only appeared as the BSV from 1923 onwards . The Luftikus was created in 1927 at the suggestion of the engineer Otto Hohmuth, who had studied at the TH Charlottenburg , learned to fly during the First World War and received the glider pilot license No. 23 in June 1923. After serious injuries as a result of a crash with a self-constructed motor glider at the Rhön competition in 1924, he had to give up flying. The aim of his Luftikus design was a performance glider for participation in the 1928 Rhön competition that was easy to build at low cost. Although the planned construction costs of 700 Marks could be met, the workload exceeded expectations, so that the aircraft was not yet ready when the building was accepted in the run-up to the competition. In May 1929, flight tests finally began on Windmühlenberg in Berlin-Gatow .
construction
The wingspan of the wing in the shoulder- wing arrangement was limited to 15 meters in order to keep construction costs low and the aircraft to be easier to handle. The wooden wing with the Göttingen profile Gö 535 consisted of three parts of equal length. The constant 1.32 m deep middle section with the main spar in the shape of a box and an auxiliary spar lay on a fuselage edge and was braced towards the main bulkhead . Plywood planking from the leading edge to the auxiliary spar - near the fuselage to the trailing edge - ensured torsional rigidity, the rest of the wing was covered with fabric. The outer surfaces were single-spar and had a trapezoidal floor plan, covered with fabric on the upper side and covered with thin plywood in the area of the ailerons.
The fuselage was created as a frame construction with a rectangular, square cross-section from the auxiliary spar. The sides were planked with plywood, on the underside there was a replaceable, rubber block sprung central runner, on the stern a spur. The tail unit was formed by fabric-covered pendulum rudders. The elevator was 3.40 m wide.
Versions
Two replicas were made: at the Magdeburg air police Lüwa "D-Willi Faber II", another at the Spandau glider pilot Hans Böhnert in Berlin-Pichelsdorf with modified rudder fittings and outer wing connection and a new grinding spur.
use
At the Rhön competition, the first flight pilot Otto Bedau had to catch up on the requirements of the C test in order to be able to take part in the “performance competition”. On the third day, a flight of 6:10 minutes was successful and the next day 610 meters take-off altitude. The condition for participation was thus fulfilled and Bedau won the high price in the “exercise competition”. In the 1930 competition, he achieved second place with a total flight time of 27:38 h and was the highest altitude pilot. For a flight of 7:34 h and 1640 m takeoff he received the challenge trophy of the " Prince Heinrich Prize" from last year's winner Robert Kronfeld . In 1931, the glider was used in attempts to introduce “American tight-rope flying ” behind an Albatros B II in double or triple towing and was given a clutch in the bow of the fuselage that could be released from the cockpit . For the 1931 Rhön competition, the aircraft's equipment was expanded to include a variometer and a parachute . The Luftikus started for the first time in the performance class; but without any notable success. In 1932 and 1933 the aircraft also took part in the competition with various pilots, among them Heinz Kensche .
Technical specifications
| Parameter | Data |
|---|---|
| crew | 1 |
| length | 6.40 m |
| span | 15.00 m |
| height | 1.80 m |
| Wing area | 15.40 m² |
| Wing extension | 14.6 |
| Empty mass | 143 kg |
| Flight mass | 214 kg |
| Wing loading | 13.9 kg / m² |
| Slightest sinking | 0.74 m / s at 50 km / h |
Related developments
In 1931 Hohmuth developed the performance sailor Greyhound with a wingspan of 18 meters based on the Luftikus .
See also
Web links
- BSV Luftikus in the glider database J2mcL Planeurs