Protoplane Ultra

The Ultra was designed as a highly efficient aircraft, to comply with the Fédération Aéronautique Internationale microlight rules. It features a cantilever low-wing, a two-seats-in-side-by-side configuration enclosed cockpit under a bubble canopy, fixed tricycle landing gear with wheel pants and a single engine in tractor configuration.^[1][2]

The aircraft is made from composites. Its 11 m (36.1 ft) span wing employs a Wortmann FX 66-17All-182/26 airfoil, has an area of 12.10 m² (130.2 sq ft) and flaps that have deflections of 0°, 15° and 35° available. The standard engine provided is the 85 hp (63 kW) Jabiru 2200 four-stroke powerplant.^[1][2][3]

The Ultra achieves a fuel economy of 12L/h (43 mpg) at 220 km/h (137 mph) through aerodynamic refinements and use of composites.^[1][2][4]

Ultra

Petrol-powered version equipped with an 85 hp (63 kW) Jabiru 2200 four-stroke powerplant^[1][2]

Ultra-e

Electric aircraft variant under development.^[1][2][5]

Data from Bayerl and Protoplane^[1][3]

General characteristics

• Crew: one
• Capacity: one passenger
• Length: 7.24 m (23 ft 9 in)
• Wingspan: 11.00 m (36 ft 1 in)
• Height: 1.43 m (4 ft 8 in)
• Wing area: 12.10 m² (130.2 sq ft)
• Airfoil: Wortmann FX 66-17All-182/26
• Empty weight: 250 kg (551 lb)
• Gross weight: 450 kg (992 lb)
• Fuel capacity: 90 litres (20 imp gal; 24 US gal)
• Powerplant: 1 × Jabiru 2200A four cylinder, air-cooled, four stroke aircraft engine, 63 kW (85 hp)
• Propellers: 2-bladed Arplast Helice TD 152 composite propeller

Performance

• Maximum speed: 255 km/h (158 mph, 138 kn)
• Cruise speed: 220 km/h (140 mph, 120 kn)
• Stall speed: 59 km/h (37 mph, 32 kn)
• Never exceed speed: 272 km/h (169 mph, 147 kn)
• g limits: +5.30/-2.65
• Maximum glide ratio: 22:1 at 92 km/h (57 mph)
• Rate of climb: 8 m/s (1,600 ft/min)
• Rate of sink: 1.11 m/s (219 ft/min)
• Wing loading: 37.2 kg/m² (7.6 lb/sq ft)