Scheibe SF 34

The Scheibe SF 34 Delphin (German: "dolphin") is a two-seat sailplane that was produced by Scheibe in Germany in the late 1970s and 1980s. Designed by Wolf Hoffmann and originally designated the SF H34, it was Scheibe's first unpowered aircraft of composite construction.[1]

SF 34 Delphin
Centrair SNC-34 Alliance
Role Sailplane
National origin Germany
Manufacturer Scheibe
Designer Wolf Hoffmann[1]
First flight 28 October 1978[1]
Number built 26 by 1987[2]

The SF 34 is a conventional, mid-wing, cantilever monoplane. The landing gear is of bicycle configuration, with a non-retractable nosewheel and mainwheel semi-recessed into the fuselage.[2] The tail is also equipped with a small skid. Scheibe manufactured the type in Hungary (SF-34b),[2] later it was produced under license in France by Centrair as the Centrair SNC-34 Alliance.[3] In 2010, Scheibe Aircraft in Heubach intended to take up production of the SF-34 again.

Specifications

Data from Jane's All the World's Aircraft 1988-89[4]

General characteristics

  • Crew: 2
  • Length: 7.5 m (24 ft 7 in)
  • Wingspan: 15.8 m (51 ft 10 in)
  • Height: 1.4 m (4 ft 7 in)
  • Wing area: 14.8 m2 (159 sq ft)
  • Aspect ratio: 16.9
  • Airfoil: root:Wortmann FX-61-184; tip:Wortmann FX-60-126
  • Empty weight: 320 kg (705 lb)
  • Max takeoff weight: 540 kg (1,190 lb)

Performance

160 km/h (86 kn; 99 mph) on aero-tow
125 km/h (67 kn; 78 mph) on winch launch
  • Maximum glide ratio: 35:1 at 95 km/h (51 kn; 59 mph)
  • Rate of sink: 0.7 m/s (140 ft/min) at 75 km/h (40 kn; 47 mph)
  • Wing loading: 36.5 kg/m2 (7.5 lb/sq ft)

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References
  1. Hardy, Michael J. (1982). Gliders & Sailplanes of the World. Shepperton: Ian Allan Publishing Ltd. pp. 79–80. ISBN 0-7110-1152-4.
  2. John W.R. Taylor, ed. (1987). Jane's All the World's Aircraft 1987-88. London: Jane's Information Group. pp. 754. ISBN 9780710608505.
  3. Macfadyen, Tim (2002). "BGA glider data sheet - SF(H) 34 & SNC 34 C" (PDF). BGA website. British Gliding Association. Retrieved 2010-02-07.
  4. John W.R. Taylor, ed. (1988). Jane's All the World's Aircraft 1988-89. London: Jane's Information Group. p. 629. ISBN 0-7106-0867-5.

Further reading
  • Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. p. 793.
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