Protoplane Ultra

Design and development

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.

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.

The Ultra achieves a fuel economy of 12l/h (43 mpg) at 220 kph (137 mph) through aerodynamic refinements and use of composites.

Variants

Ultra

Gasoline-powered version equipped with a 85 hp (63 kW) Jabiru 2200 four-stroke powerplant

Ultra-e

Electric aircraft variant under development.

Specifications (Ultra)

Data from Bayerl and Protoplane

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 (137 mph; 119 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)