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Scheibe SF-H34 Delphin
S.N. Centrair Alliance 34



Intended to succeed the Bergfalke, the SFH34 tandem two-seater training and sporting sailplane can be used for ab initio and advanced training and cross-country flying, and is Scheibe's first unpowered design of all-glassfibre construction.
Design work, headed by Dipl-lng Hoffman, began in 1978 and the SF-H34 prototype first flew on 28 October 1978; production began early in 1979. The cantilever two-piece mid-set wing has a glassfibre roving main spar and is of glassfibre honeycomb sandwich construction, as is the tail unit with its low-set tailplane; there are Schempp-Hirth air brakes in the wing upper surfaces, and production aircraft have no leading edge sweepback. The fuselage is a glassfibre honeycomb sandwich shell, and there are towing hooks fitted under the nose and at the centre of gravity. Landing gear consists of a fixed semi-exposed monowheel directly below the cg and a nosewheel, plus a tailskid. The pilots sit in semi-reclining seats with dual controls under a large one-piece frameless flush canopy that opens sideways; the seat backrests and rudder pedals are adjustable in flight.


The SF-34B Delphin was produced in France as the S.N. Centrair Alliance 34 two-seat glider.


Wing span: 15.8m / 51.9ft
Wing area: 14.8sq.m / 159.3sq.ft
Empty Weight: 330kg /727lb
Payload: 210kg / 463lb
Gross Weight: 540kg / 1190lb
Wing Load: 36.49kg/sq.m / 7.47lb/sq.ft
Aspect ratio: 17
Airfoil: Wortmann FX-61-184
MinSink: 0.70 m/s / 2.3 fps / 1.36 kt
Seats: 2
L/Dmax: 35 @ 95 kph / 51 kt / 59 mph
No. Built: 40


Scheibe SF-H34
Span: 15.8 m / 51 ft 10 in
Length: 7.5 m / 24 ft 7.25 in
Height: 1.45m / 4 ft 9 in
Wing area: 14.8 sq.m / 159.3 sq.ft
Wing section: Wortmann FX-61-184/FX-60-126
Aspect ratio: 16.9
Empty weight: 290 kg / 675 lb
Max weight: 490 kg / 1,102 lb
Water ballast: None
Max wing loading: 33.2 kg/sq.m / 6.8 lb/sq.ft
Max rough air speed: 86 kt / 160 km/h
Max speed: 155 mph / 135 kt / 250 km/h (in smooth air)
Stalling speed: 35 kt / 65 km/h
Min sinking speed: 2.30 ft/sec / 0.70 m/sec at 47 mph / 40 kt / 75 km/h

Best glide ratio: 35:1 at 59 mph / 52 kt / 95 km/h







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