Finsterwalder Perfex

Design and development

The Perfex and the smaller sized Lightfex are intended as man-packable single-surface beginner gliders for recreational flying. As such the Perfex weighs only 22 kg (48.5 lb) and can be reduced to a folded size of 1.95 m (6.4 ft)

The aircraft is made from aluminum tubing, with the wing covered in Dacron sailcloth. Its 9.4 m (30.8 ft) span wing is cable braced from a single kingpost. The nose angle is 120° and the aspect ratio is 5.5:1.

Variants

Lightfex

Medium sized glider with wing area of 13.8 m² (149 sq ft) and a pilot recommended weight of 45 to 75 kg (99 to 165 lb). DHV certified as Class 2.

Perfex

Large sized glider with wing area of 16 m² (170 sq ft) and a pilot recommended weight of 70 to 105 kg (154 to 231 lb). DHV certified as Class 1-2.

Specifications (Perfex)

Data from Bertrand

General characteristics

Crew: one

Wingspan: 9.4 m (30 ft 10 in)

Wing area: 16 m² (170 sq ft)

Aspect ratio: 5.5:1

Empty weight: 22 kg (49 lb)

Gross weight: 123 kg (271 lb)

Performance

Stall speed: 22 km/h (14 mph; 12 kn)

Never exceed speed: 80 km/h (50 mph; 43 kn)

Maximum glide ratio: 10:1

Wing loading: 7.7 kg/m² (1.6 lb/sq ft)