Operation Sigma Sigma - Specifications (before Marsden Conversion)

Specifications (before Marsden Conversion)

Data from Sailplanes 1965-2000

General characteristics

• Crew: 1
• Length: 28 ft 11 in (8.81 m)
• Wingspan: 68 ft 11 in (21 m)
• Wing area: 131 sq ft (12.2 m2) (flaps retracted)
  

16.5 m2 (177.60 sq ft) (flaps extended)

• Aspect ratio: 36.2(flaps retracted)
  

26.8 (flaps extended)

• Airfoil: Wortmann FX-67-Σ136-017
• Empty weight: 1,338 lb (607 kg)
• Max takeoff weight: 1,550 lb (703 kg)

Performance

• Maximum glide ratio: 41:1 as completed (47:1 with Marsden modifications)
• Rate of sink: 126.6 ft/min (0.643 m/s) (1.25 kts)(flaps retracted)
  

151 ft/min (1.5 kts) (0.772 m/s) (flaps extended)

• Wing loading: 11.8 lb/sq ft (57.6 kg/m²) (flaps retracted)
  

42.6 kg/m² (8.725 Lb/sqft) (flaps extended)