Disk mountain falcon IV
Disk mountain falcon IV | |
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Type: | Glider |
Design country: | |
Manufacturer: | |
Production time: |
until about 1979 |
The Scheibe Bergfalke IV is a two-seater glider in composite construction for training and performance flight from the manufacturer Scheibe-Flugzeugbau in Dachau .
history
The Bergfalke IV represented the last development stage of the Bergfalken series, in which emphasis was placed on improved performance in high-speed flight.
construction
The fuselage consists of a tubular steel frame welded in a half-timbered construction . The seats are at the same height one behind the other and have a large, one-piece blown, laterally hinged hood, which is also used on the SF 28 motor glider . The nose of the fuselage is clad with GRP and is a bit more pointed than its predecessor. The rear part of the fuselage has a semicircular GRP cladding at the top. A rigid, unsprung central wheel serves as the chassis. A runner is no longer available.
The wing structure is designed as a single spar and divided for easy installation. The profile is a modified Wortmann laminar profile. In contrast to the previous models, the wing is not swept and designed as a double trapezoid. In contrast to the Bergfalken III, the wingspan has been increased slightly. Schempp-Hirth airbrakes that extend on both sides serve as landing aids. The tail is shaped like the previous models as a self-supporting timber construction. The fins are covered with plywood and the oars with fabric. The rudder is firmly attached to the fuselage; the horizontal stabilizer is placed on the fuselage from above.
Technical specifications
![](https://upload.wikimedia.org/wikipedia/commons/thumb/e/e3/Bergfalke_IV.jpg/220px-Bergfalke_IV.jpg)
Parameter | Data |
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crew | 1 + 1 |
length | 8 m |
span | 17.20 m |
Wing area | m² |
Wing extension | |
Glide ratio | 32 at approx. 95 km / h |
Slightest sinking | |
Empty mass | 310 kg |
Max. Payload | 210 kg |
Max. Takeoff mass | 520 kg |
Max. Wing loading | kg / m² |
Minimum speed | ~ 70 km / h |
Top speed | 200 km / h |
See also
- Disk Mü 13 E Bergfalke I
- Disk mountain falcon II
- Disk Bergfalke II / 55
- Disk mountain falcon III
- Disk mountain falcon IV
- List of aircraft types
literature
- Gerd Zipper: Falkenhorst. The history of the disk planes . Weishaupt, 1999, ISBN 3-7059-0059-5 .
Web links
- Disc of sailplanes. (PDF) EASA.A.099. In: Type-Certificate Data Sheet. European Aviation Safety Agency , February 11, 2016, accessed June 22, 2018 .