Sportavia-Pützer SFS 31 Milan
Sportavia-Pützer SFS 31 Milan
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The Sportavia-Pützer SFS 31 Milan is a single-seat motor glider that was produced in Germany in the early 1970s.
Design and development
The Milan was created by essentially combining the fuselage of the Fournier RF-4 with the wings of the Scheibe SF-27.[2][3][4] The resulting aircraft is a conventional motorglider design, a low-wing cantilever monoplane with a nose-mounted engine.[1][4] The undercarriage consists of a single retractable mainwheel, a fixed tailwheel, and an outrigger under each wing.[1][5] Construction is of wood, skinned in plywood and fabric.[1][5] The designation was created by combining the initials of the manufacturers involved (Sportavia, Fournier, and Scheibe), and adding together the model numbers of the two constituent aircraft designs.[1][4]
Specifications
Data from Taylor 1977, p.560, except as noted
General characteristics
Crew: one pilot
Length: 6.05 m (19 ft 10 in)
Wingspan: 15.00 m (49 ft 3 in)
Height: 1.57 m (5 ft 2 in)
Wing area: 12.0 m2 (129 ft2)
Aspect ratio: 18.6
Wing profile: Wortmann FX-61-184 at root, Wortmann FX-60-126 at tip
Empty weight: 310 kg (683 lb)
Gross weight: 440 kg (970 lb)
Powerplant: 1 × Rectimo 4 AR 1200, 29 kW (39 hp)
Performance
Cruising speed: 180 km/h (112 mph)
Range: 670 km (415 miles)
Service ceiling: 6,000 m (19,700 ft)
Maximum glide ratio: 29:1[5]
Rate of climb: 3 m/s (590 ft/min)
Armament