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 Sir George Cayley's Notebook - 'Sea' (1799-1811)

In his lifetime, Sir George Cayley (1773-1857) published just a few papers on the subject of aeronautics and many of his ideas are explored in five illustrated manuscript notebooks which were presented on permanent loan to the Royal Aeronautical Society in 1946 by Cayley's grandson Sir Kenelm Cayley. The…

 Sir George Cayley's Notebook - 'Passions' (1812-1830)

In his lifetime, Sir George Cayley (1773-1857) published just a few papers on the subject of aeronautics and many of his ideas are explored in five illustrated manuscript notebooks which were presented on permanent loan to the Royal Aeronautical Society in 1946 by Cayley's grandson Sir Kenelm Cayley. The…

 Sir George Cayley's Notebook - 'Egypt' Part A (1848-1855)

In his lifetime, Sir George Cayley (1773-1857) published just a few papers on the subject of aeronautics and many of his ideas are explored in five illustrated manuscript notebooks which were presented on permanent loan to the Royal Aeronautical Society in 1946 by Cayley's grandson Sir Kenelm Cayley. The…

 Lawrence Hargrave: 'Evolution of the Flying Machine I' (1885-1889) Image 19

First compressed air engine and indicator.

 Lawrence Hargrave: 'Evolution of the Flying Machine I' (1885-1889) Image 20

Rough chronographic apparatus with three cylinder screw eninge attached.

 Lawrence Hargrave: 'Evolution of the Flying Machine I' (1885-1889) Image 23

An engine for patroleum spirit vapour.

 Lawrence Hargrave: 'Evolution of the Flying Machine I' (1885-1889) Image 25

A three cylinder screw engine.

 Percy Pilcher: Drawings (1895-1899) Drawing 3

A sketch of a 'reconstructed' Hawk glider and a 4hp steam engine with two cylinders dating to around 1898.

 Percy Pilcher: Drawings (1895-1899) Drawing 10

A full-sized scale four-view sectioned drawing of a two-cylinder engine probably dating to the mid-1890s. In appendix one of his book, Another Icarus, Philip Jarrett points our that Pilcher wrote cancelled in favour of 1 cylinder, suggesting that it was drawn some years before the two-cylinder petrol…