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The Slingsby T.41 Skylark 2 was a sailplane produced from 1953 by Slingsby Sailplanes at Kirkbymoorside, Yorkshire.

Slingsby T.41 Skylark 2
Skylark 2C (BGA778)
Role	Sailplane Type of aircraft
National origin	United Kingdom
Manufacturer	Slingsby Sailplanes
Designer	John Reussner
First flight	1953
Number built	63
Developed from	Slingsby Skylark 1
Variants	Skylark 3, Skylark 4

Design and development

Following the technical success of the T.37 Skylark, the concept was expanded with the introduction of the T.41 Skylark 2. The use of laminar-flow sections was continued but the section at the tips was changed to NACA4415 to reduce the tendency to tip-stall. The Skylark 2 was very similar in shape to its predecessor but had a smooth-skinned rounded fuselage and a wing of greater span and area. Composite materials were introduced in the Skylark 2, with the nose cone, wingtips and various small fairings made from polyester resin glassfibre. The thickness of the aerofoils was increased to ensure that drag was reduced over a wider speed range allowing the Skylark 2 to climb faster in thermals at low speed and race between thermals at high speed.^{[citation needed]}

History

The prototype was flown in November 1953 and tested by the British Gliding Association's Test Group No.1 based at Lasham Airfield. Results of the tests showed that the Skylark 2 was a safe aircraft with a reasonable performance. Orders were received from individuals, clubs and syndicates, but the Skylark 2 was soon outclassed in international competitions.

Specifications (Skylark 2)

Data from ,[1] The World's Sailplanes:Die Segelflugzeuge der Welt:Les Planeurs du Monde[2]

General characteristics

• Crew: 1
• Length: 24 ft 0 in (7.31 m)
• Wingspan: 48 ft 0 in (14.63 m)
• Wing area: 144 sq ft (13.4 m²)
• Aspect ratio: 16
• Airfoil: centre section NACA 63₃-620, tip NACA 4415
• Empty weight: 420 lb (190.5 kg)
• Gross weight: 600 lb (272.1 kg)
• Max takeoff weight: 679 lb (308 kg)

Performance

• Stall speed: 32 kn (37 mph, 59 km/h)
• Never exceed speed: 116 kn (134 mph, 215 km/h)
  
• Aerotow speed: 71 kn (131.5 km/h; 81.7 mph)
• Winch launch speed: 60 kn (111.1 km/h; 69.0 mph)
• g limits: +7.5 -3.8 at 66 kn (122 km/h; 76 mph)
• Lift-to-drag: 30 at 42 kn (78 km/h; 48 mph)
• Wing loading: 4.7 lb/sq ft (23 kg/m²)

See also

Related lists

• List of gliders

Notes

References

• Ellison, Norman (1971). British Gliders and Sailplanes 1922-1970 (1st ed.). London: Adam & Charles Black. p. 208. ISBN 0-7136-1189-8.
• Simons, Martin (1996). Slingsby Sailplanes (1st ed.). Shrewsbury: Airlife. pp. 162–167. ISBN 1-85310-732-8.

На других языках

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- [en] Slingsby Skylark 2

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[fr] Slingsby T.41 Skylark 2

Le Slingsby T.41 Skylark 2 est un planeur produit à partir de 1953 à Kirbymoorside dans le Yorkshire par Slingsby Sailplanes.

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