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Baptiste Jules Henri Jacques Giffard (8 February 1825 – 14 April 1882) was a French engineer. In 1852 he invented the steam injector and the powered Giffard dirigible airship.
Henri Giffard | |
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| Born | Baptiste Jules Henri Jacques Giffard 8 February 1825 Paris, France |
| Died | 14 April 1882 (aged 57)[1] |
| Nationality | French |
| Occupation | engineer |
| Known for | steam injector, Giffard dirigible airship |
Giffard was born in Paris in 1825. He invented the injector and the Giffard dirigible, an airship powered with a steam engine and weighing over 180 kilograms (400 lb). It was the world's first passenger-carrying airship (then known as a dirigible, from French).[2] Both practical and steerable, the hydrogen-filled airship was equipped with a 2.2-kilowatt (3 hp) steam engine that drove a propeller. The engine was fitted with a downward-pointing funnel. The exhaust steam was mixed in with the combustion gases and it was hoped by these means to stop sparks rising up to the gas bag; he also installed a vertical rudder.[citation needed]
On 24 September 1852, Giffard made the first powered and controlled flight travelling 27 kilometres (17 mi) from Paris to Élancourt.[3] The wind was too strong to allow him to make way against it, so he was unable to return to the start.[3] However, he was able to make turns and circles,[citation needed] proving that a powered airship could be steered and controlled.[4]
Giffard was granted a patent for the injector on 8 May 1858. Unusually, he had thoroughly worked out the theory of this invention before making any experimental instrument, having explained the idea in 1850. Others had worked on using jets, particularly Eugène Bourdon who patented a very similar device in 1857.[5]
In 1863, he was appointed a Chevalier of the Légion d'honneur.[6]
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In response to his declining eyesight, Giffard killed himself in 1882,[6] leaving his estate to the nation for humanitarian and scientific purposes.[7]
A model of the Giffard Airship at the London Science Museum.
Medal of Giffard's balloon over Paris in 1878.[8]
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