Scheibe SF-33

The Scheibe SF 33 (German: "hawk") is a German motorglider that was designed by Egon Scheibe in the 1970s.

SF 33
Role	Motorglider
National origin	Germany
Manufacturer	Scheibe
Designer	Egon Scheibe
First flight	1977
Number built	1

Specifications

General characteristics

• Crew: 1
• Length: 6.75 m (22 ft 2 in)
• Wingspan: 15 m (49 ft 3 in)
• Wing area: 29.2 m² (314 sq ft)
• Aspect ratio: 28
• Empty weight: 300 kg (661 lb)
• Max takeoff weight: 410 kg (904 lb)
• Powerplant: 1 × BMW 2-cyl. air-cooled horizontally-opposed piston engine, 25 kW (34 hp)

Performance

• Maximum speed: 150 km/h (93 mph, 81 kn)
• Cruise speed: 170 km/h (110 mph, 92 kn)
• Maximum glide ratio: 28:1
• Rate of climb: 2.3 m/s (450 ft/min)
• Rate of sink: 0.8 m/s (160 ft/min) at 70 km/h (38 kn; 43 mph)
• Wing loading: 32.99 kg/m² (6.76 lb/sq ft)

Further reading

• Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. p. 595.