Schneider ES-59

ES-59 Arrow
ES-59 over Charters Towers, Australia This file may be deleted at any time.
General information
Type	Sailplane
National origin	Australia
Manufacturer	Schneider Pty Ltd
Designer	Edmund Schneider
Number built	10
History
First flight	14 April 1962

External image
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)

See also

Related development

• Schneider Grunau Baby
• Schneider ES-52 Kookaburra
• Schneider ES-60 Boomerang
• Schneider ES-65 Platypus

References

1. Shenstone, B.S.; K.G. Wilkinson (1963). The World's Sailplanes:Die Segelflugzeuge der Welt:Les Planeurs du Monde Volume II (in English, French, and German) (1st ed.). Zurich: Organisation Scientifique et Technique Internationale du Vol a Voile (OSTIV) and Schweizer Aero-Revue. pp. 28–29.

Bibliography

• Sailplane Directory. Schneider. Online. October 7, 2007.
• Hardy, Michael (1982). Gliders and Sailplanes of the World. Shepperton: Ian Allan. p. 99.
• Shenstone, B.S.; K.G. Wilkinson (1963). The World's Sailplanes:Die Segelflugzeuge der Welt:Les Planeurs du Monde Volume II (in English, French, and German) (1st ed.). Zurich: Organisation Scientifique et Technique Internationale du Vol a Voile (OSTIV) and Schweizer Aero-Revue. pp. 28–29.