The Dynamic Sport Viper is a Polish single-place, paraglider that was designed by Wojtek Pierzyński and produced by Dynamic Sport of Kielce. It is now out of production.
Design and development
The Viper was designed as a competition glider. The models are each named for their relative size.
Reviewer Noel Bertrand described the Viper in a 2003 review as priced very competitively.
Viper M
Medium-sized model for mid-weight pilots. Its 12.25 m (40.2 ft) span wing has a wing area of 26.5 m
2 (285 sq ft), 70 cells and the aspect ratio is 5.56:1. The pilot weight range is 65 to 85 kg (143 to 187 lb).
Viper L
Large-sized model for heavier pilots. Its 12.8 m (42.0 ft) span wing has a wing area of 28.6 m
2 (308 sq ft), 73 cells and the aspect ratio is 5.65:1. The pilot weight range is 80 to 100 kg (176 to 220 lb).
Viper XL
Extra large-sized model for much heavier pilots. Its 13.3 m (43.6 ft) span wing has a wing area of 30.5 m
2 (328 sq ft), 76 cells and the aspect ratio is 5.71:1. The pilot weight range is 95 to 115 kg (209 to 254 lb).
Data from Bertrand
General characteristics
Crew: one
Wingspan: 12.8 m (42 ft 0 in)
Wing area: 28.6 m2 (308 sq ft)
Aspect ratio: 5.65:1
Performance
Maximum speed: 50 km/h (31 mph; 27 kn)
Rate of sink: 0.9 m/s (180 ft/min)
