The Weller UW-9 Sprint is a German

ultralight aircraft Ultralight aviation (called microlight aviation in some countries) is the flying of lightweight, 1- or 2-seat fixed-wing aircraft. Some countries differentiate between weight-shift control and conventional three-axis control aircraft with ailer ...

designed and produced by Weller Flugzeugbau of Bibersfeld. The aircraft is supplied as a kit for amateur construction or as a complete ready-to-fly-aircraft.Bayerl, Robby; Martin Berkemeier; et al: ''World Directory of Leisure Aviation 2011-12'', page 84. WDLA UK, Lancaster UK, 2011.

Design and development

The UW-9 is intended as a nostalgic 1930s style design that would comply with the

Fédération Aéronautique Internationale The (; FAI; en, World Air Sports Federation) is the world governing body for air sports, and also stewards definitions regarding human spaceflight. It was founded on 14 October 1905, and is headquartered in Lausanne, Switzerland. It maintai ...

microlight rules. It features a

strut-braced In aeronautics, bracing comprises additional structural members which stiffen the functional airframe to give it rigidity and strength under load. Bracing may be applied both internally and externally, and may take the form of strut, which act in ...

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 span wing has an area of and a cut-out in the centre trailing edge for rear cockpit access. The wing is supported by "V"-struts and

jury struts In aeronautics, bracing comprises additional structural members which stiffen the functional airframe to give it rigidity and strength under load. Bracing may be applied both internally and externally, and may take the form of strut, which act in ...

. The tailplane is also supported by "V"-struts. Standard engines available are the

Sauer UL 2100 The Sauer (German and Luxembourgish, , ) or Sûre (French, ) is a river in Belgium, Luxembourg and Germany. A left tributary of the Moselle, its total length is . Rising near Vaux-sur-Sûre in the Ardennes in southeastern Belgium, the Sauer flo ...

, the

Limbach L2000EA The Limbach L2000 is a series of German piston aero-engines designed and built by Limbach Flugmotoren Limbach Flugmotoren (''Limbach Aero Engines'') is a German company that produces aircraft engines. History The company is named after P ...

, the Rotax 912ULS

four-stroke A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either directio ...

powerplants, or the

Rotec R2800 The Rotec R2800 is a seven-cylinder 110 hp radial engine built by Rotec Aerosport Pty Ltd in Australia. The R2800 was Rotec's first (and only) engine offering when they first opened their doors in 2000. In 2005, Rotec released a more powerful ...

radial engine. The Sprint is approved for aero-towing gliders and banner towing in Germany.

Specifications (version)

References

External links

* {{Weller Flugzeugbau aircraft 2000s German ultralight aircraft Homebuilt aircraft Single-engined tractor aircraft