Hargrave box kites, c 1895.
© Science Museum / Science & Society Picture Library
Photograph showing two men with box kites of the type designed by Lawrence Hargrave (1850-1915), the English-born Australian aeronautical pioneer. Hargrave developed the box kite to produce a wing form for early aircraft. Hargrave's box kite formed the basis of a number of succesful power driven aeroplanes developed in the first decade of the 20th century, including the 'No 14 bis' plane flown in France by Alberto Santos-Dumont in September 1906. Gabriel Voisin actually called his early biplanes 'Hargrave' machines. In honour of his achievements, a portrait of Hargrave appeared on the $20 Australian note.