Development
Geoffrey Siers was a former RAF pilot and engineer for Boeing in 1967. He set out to design an aircraft that was fast, aerobatic, two place, and had range to fly long cross-country flights. The aircraft was refined after a full size cockpit mockup was made. The lightweight construction of the plywood-covered wooden de Havilland Mosquito was the inspiration for the materials choice.
Operational history
Test flights were performed in 1975. The aircraft takes off at 70 mph (113 km/h) and climbs at 2000 feet per minute (10.2 m/s). Full flap stalls were recorded as low as 54 mph (87 km/h).[3]
Specifications
General characteristics
- Crew: one pilot
- Capacity: one passenger
- Length: 21 ft 6 in (6.55 m)
- Wingspan: 24 ft 9 in (7.54 m)
- Wing area: 120 ft2 (11,15 m2)
- Empty weight: 1,495 lb (678 kg)
- Gross weight: 2,300 lb (1,043 kg)
- Powerplant: 1 × Lycoming O-540, 250 hp
Performance
- Maximum speed: 218 mph (351 km/h)
- Range: 450 miles (724 km)
- Rate of climb: 2,200 ft/min (11.2 m/s)