Weller ULI NG

The Weller ULI NG (New Generation), sometimes called the Weller Uli NG, is a German ultralight aircraft, designed and produced by Weller Flugzeugbau of Bibersfeld. It was introduced at the Aero show held in Friedrichshafen in 2010. The aircraft is supplied as a complete ready-to-fly-aircraft.[1][2]

ULI NG
Role Ultralight aircraft
National origin Germany
Manufacturer Weller Flugzeugbau
Introduction 2010
Status In production (2012)
Unit cost
€16,800 (2015)
Developed from Egon Scheibe Uli 1

Design and development

The aircraft is derived from the Egon Scheibe Uli 1 and was re-designed to comply with the German 120 kg (265 lb) class ultralight rules. It features a cable-braced high-wing, a single-seat open cockpit without a windshield, fixed conventional landing gear and a single engine in pusher configuration.[1][2][3]

The aircraft fuselage is made from welded steel tubing, the wing built from bolted-together aluminum tubing, with its flying surfaces covered in aircraft fabric. Its 9.68 m (31.8 ft) span wing has an area of 12.78 m2 (137.6 sq ft), giving a very light wing loading of 17.0 kg/m2 (3.5 lb/sq ft). The standard engine available is the 30 hp (22 kW) Briggs & Stratton industrial four-stroke powerplant with a V-belt reduction drive, powering a two bladed wooden propeller. The engine burns 5 litres (1.1 imp gal; 1.3 US gal) per hour at cruise. The aircraft's 18 litres (4.0 imp gal; 4.8 US gal) fuel tank is detachable for refueling and is filled with premium auto-fuel. The design incorporates a ballistic parachute whole-aircraft rescue system that includes an ignition cut-off upon firing.[1][2][3]

Specifications (version)

Data from Bayerl, Tacke and Weller[1][2][3]

General characteristics

  • Crew: one
  • Length: 5.92 m (19 ft 5 in)
  • Wingspan: 9.68 m (31 ft 9 in)
  • Wing area: 12.78 m2 (137.6 sq ft)
  • Empty weight: 119.5 kg (263 lb)
  • Gross weight: 220 kg (485 lb)
  • Fuel capacity: 18 litres (4.0 imp gal; 4.8 US gal) removable tank
  • Powerplant: 1 × Briggs & Stratton two cylinder, air-cooled, four stroke aircraft engine, with a V-belt reduction drive, 22 kW (30 hp)
  • Propellers: 2-bladed wooden

Performance

  • Maximum speed: 95 km/h (59 mph, 51 kn)
  • Cruise speed: 80 km/h (50 mph, 43 kn)
  • Stall speed: 45 km/h (28 mph, 24 kn)
  • Range: 150 km (93 mi, 81 nmi)
  • Endurance: 2:30 plus reserve
  • Rate of climb: 2 m/s (390 ft/min)
  • Wing loading: 17.0 kg/m2 (3.5 lb/sq ft)
gollark: You know what, I'll ignore this ENTIRELY for now muahahahaha.
gollark: This is in a 130 line function which *kind of* explains what it's doing, but apiaristically.
gollark: It *seemed* like it was just inserting things, but it may also be moving everything after this into the children of the other thingy?
gollark: ```nim var emNode = newDoublyLinkedNode(emToken) for childNode in token.children.nodes: if childNode.value == opener.value.token: emToken.children.head = childNode.next if childNode.next != nil: childNode.next.prev = nil childNode.next = emNode emNode.prev = childNode if childNode.value == closer.value.token: emToken.children.tail = childNode.prev if childNode.prev != nil: childNode.prev.next = nil childNode.prev = emNode emNode.next = childNode```
gollark: This would really be easier if they had actually bothered to put comments in this. I've worked out that it is in fact *not* a `seq.insert` call precisely, but I don't know what it's meant to be doing.

References
  1. Bayerl, Robby; Martin Berkemeier; et al: World Directory of Leisure Aviation 2011-12, page 84. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X
  2. Tacke, Willi; Marino Boric; et al: World Directory of Light Aviation 2015-16, page 88. Flying Pages Europe SARL, 2015. ISSN 1368-485X
  3. Weller Flugzeugbau. "Weller Uli NG". Weller-flugzeugbau.de. Retrieved 2012-09-13.
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