The Lucas L11 is a French ultralight aircraft that was designed by Emile Lucas. The aircraft is supplied in the form of plans for amateur construction.^[1][2]

Design and development

The aircraft was designed 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, fixed tricycle landing gear and a single engine in tractor configuration.^[1][2]

The aircraft is made from sheet aluminum with its windshield made from a single piece of flat plastic to save money on construction costs. Access to the cockpit is via gull-winged doors. Its 8.40 ft (2.6 m) span wing has an area of 9.00 m² (96.9 sq ft) and is equipped with flaps. The standard recommended engine is the 85 hp (63 kW) Jabiru 2200 four-stroke powerplant.^[1][2]

Variants

L 11

Base model with a tapered wing.^[1][2]

L 12

Version with a rectangular wing and simplified construction, offered as a kit only.^[2]

Specifications (L11)

Data from Bayerl^[1]

General characteristics

• Crew: one
• Capacity: one passenger
• Wingspan: 8.40 m (27 ft 7 in)
• Wing area: 9.00 m² (96.9 sq ft)
• Empty weight: 275 kg (606 lb)
• Gross weight: 450 kg (992 lb)
• Fuel capacity: 80 litres (18 imp gal; 21 US gal)
• Powerplant: 1 × Jabiru 2200 four cylinder, air-cooled, four stroke aircraft engine, 63 kW (85 hp)
• Propellers: 2-bladed composite

Performance

• Maximum speed: 203 km/h (126 mph, 110 kn)
• Cruise speed: 180 km/h (110 mph, 97 kn)
• Stall speed: 65 km/h (40 mph, 35 kn)
• Rate of climb: 5 m/s (980 ft/min)