John Stringfellow was a founder member of the aeronautical Society (now the Royal aeronautical Society) in 1866. In 1847-1848, he made a ten foot span model based on the designs of William Henson. The model had a combined wing and tail surface area of 17 square feet, and was powered by this steam engine driving twin pusher airscrews. It was tested at Chard and at Cremorne Gardens in 1848, but no proof exists that the model was capable of sustained powered flight.
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