Brochocki BKB-1
| Brochocki BKB-1 | |
|---|---|
 Two-sided view Brochocki BKB-1 |
|
| Type: | Glider |
| Design country: | |
| Manufacturer: |
Brochocki / Bodek / Kasprcyk |
| First flight: |
Fall 1959 |
| Number of pieces: |
> 4 |
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The Brochocki BKB-1 is a Canadian glider from 1960 . Four machines of this type were built.
history
The BKB-1 was designed and built from 1954 by the two Canadair engineers Stefan Brochocki and Fred Bodek. The K comes from Witold Kasprcyk, who was Brochocki's gliding instructor in Poland before the war and was a sponsor. In 1955, construction of a prototype began in the basement of Kasprcyk's house. Completed in October 1957 and short hops in the car tow in autumn 1958, the preliminary approval with the license plate CF-ZDK-X followed in September 1959 and the first flight with Dave Marsden from the National Research Council at the wheel in the autumn. During the further flight tests Fred Bodek, George Adams, Gordon Hicks, Hiller Kurlents and also the Canadian glider master Dave Webb flew the aircraft.
The aircraft was modified several times during the testing phase. The changes concerned a. the enlargement of the brake rudder and a conversion from skid to central wheel. The aircraft had a fully planked wooden wing with a 12.2 m span and was profiled with the helicopter profile NACA 8-H-12. It was controlled by elevons and brake rudders on the wing tips. It is interesting here that the part of the rudder located in front of the pivot point was positioned over the top of the wing and thus acted as a spoiler. The rear part of the rudder stood out into the air flow and thus acted as a brake. After the two builders could no longer work on the further development for professional reasons, the aircraft was transferred to Kasprzyk.
In 1962 Kasprzyk took the BKB-1 to the USA . There he posed as their designer, which is why this aircraft (registration number N2991G) was known under its Americanized name Kasper as the Kasper Wing . Kasper led the BKB-1 after a few small changes a. a. also in aerobatics . The changes mainly affected the brake rudder, the front part of which was now firmly attached to the wing.
After the BKB-1 broke, another machine with the name "Bekas" was created, the most obvious features of which are a slimmer fuselage with a somewhat angular cross-section and the wing tips with greater depth. In addition, the span has been increased slightly. The deepened wing tips were supposed to become Kaspers’s trademark and came e.g. B. also used on the UL aircraft Cascade Ultralites 1-80 "Kasper Wing".
Technical specifications
| Parameter | Data |
|---|---|
| crew | 1 |
| length | 3 m |
| span | 11.9 m |
| height | |
| Wing area | 14.4 m² |
| Wing extension | 10 |
| Wing profile | NACA 8-H-12 |
| Glide ratio | 30 at 87 km / h |
| Slightest sinking | 0.72 m / s at 71 km / h |
| Empty mass | 168 kg |
| Takeoff mass | 259 kg |
| Wing loading | 18 kg / m² |
| Minimum speed | 56 km / h |
| Top speed | 162 km / h |
literature
- Rudolf Storck among others: Flying Wings. The historical development of the world's tailless and flying wing aircraft. Bernard and Graefe, Bonn 2003, ISBN 3-7637-6242-6 .
Web links
Individual evidence
- ↑ Stefanie Brochocki, George Knight: Stefan Brochocki - The Real BKB-1 Story. July 15, 2000, accessed December 11, 2018 .
- ↑ Brochocki BKB-1. In: j2mcl-planeurs.net. May 23, 2015, accessed December 11, 2018 .