'Improvements in aerostation', 1844-1852.
© Science Museum / Science & Society Picture Library
Extract from the 'Illustrated London News', illustrating ballooning apparatus developed by the great English aeronaut, Charles Green (1785-1870) over the course of his ballooning career, which spanned over 30 years and more than 500 ascents. His improvements to ballooning included the attachment of a sail to the balloon to asist with navigation, and the use of a guide (or trail) rope to reduce or control speed and relieve the balloon of some of its weight. Green was also the pioneer of coal-gas - a cheaper and more effective alternative to using hydrogen in balloons.