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Weller UW-9 Sprint



In production in 2012, the Weller UW-9 Sprint is a German ultralight aircraft designed and produced by Weller Flugzeugbau of Bibersfeld.

The UW-9 is intended as a nostalgic 1930s style design that would comply with the Fédération Aéronautique Internationale microlight rules. It features a strut-braced parasol wing, a two-seats-in-tandem open cockpit, fixed conventional landing gear and a single engine in tractor configuration.

The aircraft fuselage is made from welded steel tubing, with bolted-together aluminum tubing spar ladder-construction wings, all covered in doped aircraft fabric. Its wing has a cut-out in the centre trailing edge for rear cockpit access. The wing is supported by "V"-struts and jury struts. The tailplane is also supported by "V"-struts.

Standard engines available are the 70 hp (52 kW) Sauer UL 2100, the 75 hp (56 kW) Limbach L2000EA, the 100 hp (75 kW) Rotax 912ULS four-stroke powerplants, or the 85 hp (63 kW) Rotec R2800 radial engine. The Sprint is approved for aero-towing gliders and banner towing in Germany.
Specifications (version)

The aircraft is supplied as a kit for amateur construction or as a complete ready-to-fly-aircraft. The 2011 unit cost was €55,000.




Engine: 1 × Sauer UL2100 four cylinder, air-cooled, four stroke aircraft engine, 52 kW (70 hp)
Propellers: 3-bladed composite
Length: 5.7 m (18 ft 8 in)
Wingspan: 9.8 m (32 ft 2 in)
Height: 2.5 m (8 ft 2 in)
Wing area: 13.3 m2 (143 sq ft)
Empty weight: 290 kg (639 lb)
Gross weight: 472.5 kg (1,042 lb)
Fuel capacity: 87 litres (19 imp gal; 23 US gal)
Maximum speed: 170 km/h (106 mph; 92 kn)
Cruising speed: 130 km/h (81 mph; 70 kn)
Stall speed: 62 km/h (39 mph; 33 kn)
Range: 630 km (391 mi; 340 nmi)
Endurance: 7 hours
Maximum glide ratio: 10.5:1
Rate of climb: 6.8 m/s (1,340 ft/min)
Wing loading: 35.5 kg/sq.m (7.3 lb/sq ft)
Crew: one
Capacity: one passenger



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