Bäumer B II
| Bäumer B II booming wind | |
|---|---|
 The improved B IV a from 1927 |
|
| Type: | two-seat light aircraft |
| Design country: | |
| Manufacturer: |
Bäumer Aero GmbH |
| First flight: |
May 26, 1925 |
| Number of pieces: |
1 |
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The Bäumer B II Sausewind was an open, two - seater low - wing aircraft made of wood. It was the first aircraft from German production that had been designed for aerodynamic perfection. All control cables and linkage levers were routed inside with optimized resistance. The chassis had two axles to save the drag of a continuous axle. The wings and tail units had an elliptical floor plan, which offers aerodynamic advantages over the rectangular wings customary at the time.
development
The development was based on an invitation to tender by the BZ at noon : At the “BZ Prize of the Airs”, prize money of 100,000 Reichsmarks was promised as a winner's prize. At Bäumer Aero GmbH , the brothers Siegfried Günter and Walter Günter designed the B II.
More Achievements
- On May 31, 1925, the B II took off from Berlin-Tempelhof for a German sightseeing flight. A flight time (including several emergency landings) of 91 hours and 12 minutes was required for the distance of 5242 kilometers. The Sausewind took second place in group B for aircraft with max. 80 hp. There was a prize money of 15,000 Reichsmarks for this.
- At the Otto Lilienthal competition from June 15 to July 23, 1925, the B II won in the categories of maximum speed at 100 m (183.5 km / h), summit height (4770 m) and best rate of climb (2.11 km / h) m / s).
loss
The B II "Sausewind" was in action for the German Aviation School on the Saxony sightseeing flight . The aircraft was lost in a crash landing on September 19, 1925.
Technical specifications
| Parameter | B II Sausewind, D-639 |
|---|---|
| crew | 1 + 1 |
| span | 9.30 m |
| length | 6.10 m |
| Wing area | 11.60 m² |
| payload | 210 kg |
| Empty mass | 280 kg |
| Max. Takeoff mass | 490 kg |
| Wing loading | 42 kg / m² |
| Engine | a three-cylinder radial engine Wright Gale 4a; 65 hp (48 kW) |
