BS-1 glass wing
BS-1 glass wing | |
---|---|
Type: | Glider |
Design country: | |
Manufacturer: | |
First flight: |
December 23, 1962 |
Production time: |
1966-1968 |
Number of pieces: |
16 + 2 prototypes |
The BS-1 glass wing was a high-performance glider and the first design by Björn Stender (1935–1963).
history
Björn Stender was the son of Walter Stender , a well-known aircraft designer at Dornier and Blohm & Voss, among others . Since Stender thus early had with the aircraft and gliding contact, he joined while studying at the Technical University of Braunschweig of Braunschweig Akaflieg at.
There he worked on the construction of the SB 5 "Sperber" and became the spiritual father of the SB 6 . After graduating on August 1, 1962, he began building the BS-1 (Björn Stender No. 1) and took off on its maiden flight on December 23 . The aerodynamic and flying quality of its design caused a sensation at the turn of 1962/63; the BS-1 was considered the most powerful and elegant glider in the world.
At the beginning of October 1963 Björn Stender flew an extensive test program for the flight characteristics of the second BS-1. When the maximum speed was to be flown on October 4th, Stender had probably taken his left hand off the flap lever at over 300 km / h in order to control the control stick with both hands. As a result, he inadvertently released the unstable flutter system when it was released. The wing was unable to cope with this enormous load and broke. Björn Stender died at the age of 28.
At the time of Björn Stender's death, there were already 16 orders for the BS-1. That is why Eugen Hänle , the founder of glass wing glider construction , decided to build the aircraft in his company. Since there were insufficient plans, he had to redesign the BS-1, but adopted its aerodynamic shape. In 1966, four years after the start of development, the first new BS-1 took off, and there was still no nearly equivalent aircraft. Another 16 aircraft were built at Glasflügel, a total of 18 BS-1s with the two prototypes from Stender.
According to Brütting, “the overall design of the BS-1 [...] was the benchmark and model.” Many new designs showed similar dimensions and configurations, especially the Schleicher ASW 12 and the FFA Diamant HBV look similar to the BS-1.
Technical specifications
Parameter | Data |
---|---|
span | 18.00 m |
length | 7.50 m |
Wing area | 14.20 m² |
Elongation | 22.8 |
Preparation mass | 335 kg |
Max. Payload | 125 kg |
Max. Takeoff mass | 460 kg |
Max. Wing loading | 32.40 kg / m² |
Minimum speed | 65 km / h |
Top speed | 250 km / h |
min. Rate of descent | 0.55 m / s at 85 km / h |
Glide ratio | 44 at 95 km / h |
Wing profile | Eppler 348K |
See also
Web links
- Type approval of the glass wing BS-1 - EASA-TCDS-A.241 (PDF; 290 kB)
- Detailed page about the glass wing BS-1
Individual evidence
- ^ History of the company Glasflügel Segelflugzeugbau GmbH / Schlattstall. Glasfaser-Flugzeug-Service GmbH , accessed on March 1, 2012 .
- ^ Georg Brütting : The most famous gliders . Motorbuch Verlag, Stuttgart 2003, ISBN 3-613-02296-6 , p. 101.
- ^ Academic Fliegergruppe Braunschweig [Hrsg.]: SB 5 - SB 15. Glider Braunschweig. 2nd Edition. Appelhans-Verlag, Braunschweig 2013, ISBN 978-3-941737-73-0 , p. 46.
- ↑ a b c Georg Brütting: The most famous gliders . Motorbuch Verlag, Stuttgart 2003, ISBN 3-613-02296-6 , p. 102.
- ^ Georg Brütting: The most famous gliders . Motorbuch Verlag, Stuttgart 2003, ISBN 3-613-02296-6 , p. 103.