Cayley's 'aerial Carriage', 1843.
© Science Museum / Science & Society Picture Library
Model. English aviation pioneer, George Cayley (1771-1857) was responsible for designing the first man-carrying glider. This image shows his innovative 'aerial Carriage' of 1843. It incorporated four circular discs that were designed to raise the machine vertically, rather like a helicopter, whereupon they were to form circular wings. This ambitious design was never actually built but remains an example of Cayley's remarkable understanding of the principles of flight.