Scheibe Tandem-Falke
| SF 28 Tandem-Falke | |
|---|---|
 | |
| side view of a Tandem Falke | |
| Role | Motorglider |
| National origin | Germany |
| Manufacturer | Scheibe |
| Designer | Egon Scheibe |
| First flight | May 1971[1] |
| Number built | 119 by 1985[1] |
| Developed from | Akaflieg München Mü13 |
The Scheibe SF 28 Tandem-Falke (German: "hawk") is a German motorglider that was designed by Egon Scheibe in 1970 and which flew for the first time in May the following year.[1] It was a development of the Scheibe Falke with (as its name suggests) seating in tandem rather than side-by-side as in the original Falke design.[1][2]
Development
The SF 28 is a low-wing, cantilever monoplane of conventional design with a large perspex canopy. The undercarriage consists of a non-retractable monowheel and a steerable tailwheel, linked to the rudder.[2] Small outrigger wheels are fitted to nylon legs under each wing.[1][2] The fuselage is of steel tube construction, covered in fabric[1] and the wings are constructed of wood and fabric around a single spar.[2]
Operational history
Scheibe entered at least one Tandem-Falke in the German Motor Glider Competition of 1977.[2]
Specifications (SF 28A)
Data from Jane's all the world's aircraft, 1985-86[1]
General characteristics
- Crew: 1
- Capacity: 1
- Length: 8.1 m (26 ft 7 in)
- Wingspan: 16.3 m (53 ft 6 in)
- Height: 1.55 m (5 ft 1 in)
- Wing area: 18.5 m2 (199 sq ft)
- Aspect ratio: 14.5
- Airfoil: Göttingen 533
- Empty weight: 410 kg (904 lb)
- Max takeoff weight: 610 kg (1,345 lb)
- Powerplant: 1 × Limbach SL 1700 4-cyl. air-cooled horizontally-opposed piston engine, 49 kW (66 hp)
Performance
- Maximum speed: 180 km/h (112 mph; 97 kn)
- Range: 520 km (323 mi; 281 nmi)
- Service ceiling: 5,000 m (16,404 ft)
- Maximum glide ratio: 26:1 at 85 km/h (46 kn; 53 mph)
- Rate of sink: 0.9 m/s (180 ft/min) at 69 km/h (37 kn; 43 mph)
- Wing loading: 32.99 kg/m2 (6.76 lb/sq ft)
Notes
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Taylor, John W.R.; Munson, Kenneth, eds. (1985). Jane's all the world's aircraft, 1985-86 (76 ed.). London: Jane's Pub. p. 740. ISBN 9780710608215.
- ↑ 2.0 2.1 2.2 2.3 2.4 Coates, Andrew (1978). Jane's World Sailplanes and Motor Gliders. London: MacDonald and Jane's. p. 67.
Further reading
- Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. p. 595.
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