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Schneider ES-59 “Arrow”

The Schneider ES-59 Arrow is a sailplane designed and manufactured in Adelaide, South Australia in the early 1960s. The Arrow was manufactured with a one-piece wing of 13.23 metres span. It was the first Australian-built sailplane to compete in the World Gliding Championships, 1963 in Argentina. The Arrow has wood/fabric wings and tail and a wood fuselage. It has a fixed main wheel and a nose skid.

Specifications

Data from The World's Sailplanes:Die Segelflugzeuge der Welt:Les Planeurs du Monde Volume II^[1]

General characteristics

• Crew: 1
• Length: 6.8 m (22 ft 4 in)
• Wingspan: 13.24 m (43 ft 5 in)
• Wing area: 11 m² (120 sq ft)
• Aspect ratio: 16
• Airfoil: Root: NACA 63 618, Mid: NACA 63 614, Tip: Joukowsky 12% mod.
• Empty weight: 170 kg (375 lb)
• Gross weight: 280 kg (617 lb)

Performance

• Stall speed: 59.5 km/h (37.0 mph, 32.1 kn)
• Never exceed speed: 238 km/h (148 mph, 129 kn)
  
• Rough air speed max: 138.5 km/h (86.1 mph; 74.8 kn)
• Aerotow speed: 130 km/h (80.8 mph; 70.2 kn)
• Winch launch speed: 115 km/h (71.5 mph; 62.1 kn)
• Terminal velocity: with full airbrakes 232 km/h (144 mph; 125 kn)
• g limits: +5 -2.5 at 138.5 km/h (86.1 mph; 74.8 kn), +4 -0 at 250 km/h (155.3 mph; 135.0 kn)
• Maximum glide ratio: 27.8 at 76 km/h (47.2 mph; 41.0 kn)
• Rate of sink: 0.73 m/s (144 ft/min) at 68 km/h (42.3 mph; 36.7 kn)
• Wing loading: 25.5 kg/m² (5.2 lb/sq ft)