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Kite Model - Lawrence Hargrave Design, Rigid Box Kite, New South Wales, Australia, 1908-1909 Object Reg. No: ST 025117

Summary:
This half-scale model of Lawrence Hargrave's rigid box kite with reverse curves was commissioned by the Museum and received in 1961. It was built by Harold P. Wood who had made models for the Museum since the 1920s.

This design was the subject of Hargrave's final paper presented to the Royal Society of New South Wales on 1 December 1909. The two horizontal lifting surfaces have a convex and concave profile in the form of a shallow curve. Hargrave noted that this design enhanced stability but caused a reduction in lift and efficiency corresponding to the increase in the curvature. A slight curve was found to be the most efficient design. Hargrave's experimental work with box kites demonstrated that this design was highly effective in generating lift. His experiments with tethered kites at Stanwell Park south of Sydney proved the superiority of the box kite design in 1894-95. By linking four box kites together, Hargrave was lifted some 16 feet clear of the ground on 12 November 1894. The box kite became the preferred method of construction for most early aircraft including the 1903 Wright Flyer which made the first successful powered flight in December 1903.
Discipline: Technology
Dimensions: 270 mm (Height), 410 mm (Width), 710 mm (Length)

More information

Tagged with: kites, modelmaking, innovation design
Themes this item is part of: Pioneering Flights at Diggers Rest, Victoria, Centenary of Australian Aviation, Engineering Collection, Transport Collection, Harold P. Wood Collection
Primary Classification: AIR TRANSPORT
Secondary Classification: Unpowered Aircraft
Tertiary Classification: kites
Model Scale: 1:2
Modelmaker: Mr Harold Wood, Mornington, Victoria, Australia, 1961
Maker of Item Modelled: Mr Lawrence Hargrave, Australia, 1908-1909

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