Roland Z-120 Relax

The Roland Z-120 Relax is a German ultralight aircraft, designed and produced by Roland Aircraft of Mendig, introduced at the AERO Friedrichshafen show in 2015. The aircraft is supplied as a kit for amateur construction or complete and ready-to-fly.[1]

Z-120 Relax
Role Ultralight aircraft
National origin Germany
Manufacturer Roland Aircraft
Status In production (2017)
Unit cost
€32,000 (2015)

Design and development

The Z-120 was designed to comply with the German 120 kg class rules, hence its designation. It features a cantilever high-wing, a single-seat, an enclosed cabin accessed by open doorways, fixed conventional landing gear and a single engine in tractor configuration.[1]

The aircraft is made from special thin-gauge sheet aluminum for lightness. Its 7.45 m (24.4 ft) span wing has an area of 9.6 m2 (103 sq ft) and lacks flaps. The standard engine used is a 35 hp (26 kW) Woelfe Aixro XF40 single-rotor Wankel engine.[1]

Specifications (Z-120)

Data from Tacke[1]

General characteristics

  • Crew: one
  • Wingspan: 7.45 m (24 ft 5 in)
  • Wing area: 9.6 m2 (103 sq ft)
  • Empty weight: 120 kg (265 lb)
  • Gross weight: 245 kg (540 lb)
  • Fuel capacity: 25 litres (5.5 imp gal; 6.6 US gal)
  • Powerplant: 1 × Woelfe Aixro XF40 single-rotor Wankel engine, 26 kW (35 hp)
  • Propellers: 2-bladed fixed pitch

Performance

  • Maximum speed: 160 km/h (99 mph, 86 kn)
  • Cruise speed: 140 km/h (87 mph, 76 kn)
  • Stall speed: 54 km/h (34 mph, 29 kn)
  • Rate of climb: 2.5 m/s (490 ft/min)
  • Wing loading: 25.5 kg/m2 (5.2 lb/sq ft)
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References
  1. Tacke, Willi; Marino Boric; et al: World Directory of Light Aviation 2015-16, page 77. Flying Pages Europe SARL, 2015. ISSN 1368-485X
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