Nervures Valluna

Design and development

The Valluna was designed as an intermediate glider and was one of the first gliders to be certified to the then-new CEN standards. The models are each named for their relative size.

The Valluna Bivouac was designed as a lighter weight version of the basic Valluna for bivouac flying. The Valluna II reduced line drag through the use of fewer and unsheathed lines. It was not certified.

The Valluna was replaced in production by the Nervures Faïal.

Variants

Valluna S

Small-sized model for lighter pilots. Its 10.92 m (35.8 ft) span wing has a wing area of 23.3 m² (251 sq ft), 34 cells and the aspect ratio is 4.9:1. The pilot weight range is 55 to 72 kg (121 to 159 lb). Glide ratio is 8:1. The glider model is CEN Standard certified.

Valluna M

Mid-sized model for medium-weight pilots. Its 11.25 m (36.9 ft) span wing has a wing area of 25 m² (270 sq ft), 54 cells and the aspect ratio is 4.9:1. The pilot weight range is 65 to 85 kg (143 to 187 lb). Glide ratio is 8:1. The glider model is CEN Standard certified.

Valluna L

Large-sized model for heavier pilots. Its 12 m (39.4 ft) span wing has a wing area of 28 m² (300 sq ft), 57 cells and the aspect ratio is 5.15:1. The pilot weight range is 80 to 100 kg (176 to 220 lb). Glide ratio is 8:1. The glider model is CEN Standard certified.

Valluna XL

Extra large-sized model for much heavier pilots. Its 12.6 m (41.3 ft) span wing has a wing area of 31 m² (330 sq ft), 57 cells and the aspect ratio is 5.15:1. The pilot weight range is 100 to 130 kg (220 to 287 lb). Glide ratio is 8.1:1. The glider model is CEN Standard certified.

Specifications (Valluna M)

Data from Bertrand and manufacturer

General characteristics

Crew: one

Wingspan: 11.25 m (36 ft 11 in)

Wing area: 25 m² (270 sq ft)

Aspect ratio: 4.9:1

Performance

Maximum speed: 45 km/h (28 mph; 24 kn)

Stall speed: 20 km/h (12 mph; 11 kn)

Maximum glide ratio: 8:1

Rate of sink: 1.1 m/s (220 ft/min)