Cosmos Echo

Design and development

The Echo was designed to comply with the European Fédération Aéronautique Internationale microlight classification and has been used in microlight competition flying. It features a cable-braced hang glider-style high-wing, weight-shift controls, a single-seat, open cockpit, tricycle landing gear and a single engine in pusher configuration.

The aircraft wing is made from bolted-together aluminium tubing, with its double surface wing covered in Dacron sailcloth. A number of different wings can be fitted, including the Top 12.9. The wing is supported by a single tube-type kingpost and uses an "A" frame control bar. Optional equipment includes a cockpit fairing and wheel pants. Engines used are the 37 kW (50 hp) Rotax 503 twin cylinder, two-stroke and 30 kW (40 hp) Rotax 447 powerplants

Variants

Echo 12

With the 37 kW (50 hp) Rotax 503 twin cylinder, two-stroke engine and the Top 12.9 wing.

Echo Fun

With the 30 kW (40 hp) Rotax 447 twin cylinder, two-stroke engine.

Echo Racer

With the 37 kW (50 hp) Rotax 503 twin cylinder, two-stroke engine.

Specifications (Echo Racer)

Data from Bertrand and Purdy

General characteristics

Crew: one

Wingspan: 9.87 m (32 ft 5 in)

Wing area: 12.9 m² (139 sq ft)

Empty weight: 126 kg (278 lb)

Gross weight: 300 kg (661 lb)

Fuel capacity: 38 litres (8.4 imp gal; 10 US gal)

Powerplant: 1 × Rotax 503 twin cylinder, air-cooled two-stroke aircraft engine, 37 kW (50 hp)

Propellers: 3-bladed Powerfin composite

Performance

Maximum speed: 155 km/h (96 mph; 84 kn)

Cruising speed: 110 km/h (68 mph; 59 kn)

Stall speed: 40 km/h (25 mph; 22 kn)

Range: 523 km; 282 nmi (325 mi)

Service ceiling: 54,864 m (180,000 ft)

Rate of climb: 4.1 m/s (800 ft/min)