Percy Sinclair Pilcher (16 January 1866 – 2 October 1899) was a British inventor and pioneer aviator who was his country's foremost experimenter in unpowered flight at the end of the nineteenth century.
He was planning a flight with a motor-driven hang glider, but died in the crash of another glider before he could make the attempt.
His memorial is in a field opposite Stanford Hall.
Percy Pilcher was born in Bath in 1866, and served in the Royal Navy for seven years from 1880. Thereafter he became an apprentice with the shipbuilders, Randolph, Elder and Company, of Govan in Glasgow.
In 1891 Pilcher began work as assistant lecturer at Glasgow University and took a growing interest in aviation. He built a hang glider called The Bat which he flew for the first time in 1895;
Later that year Pilcher met Otto Lilienthal, who was the leading expert in gliding in Germany. These discussions led to Pilcher building two more gliders, The Beetle and The Gull. Based on the work of his mentor Otto Lilienthal, in 1897 Pilcher built a glider called The Hawk with which he broke the world distance record when he flew 250 m (820 ft) at the grounds of Stanford Hall near Lutterworth in Leicestershire, England.
Pilcher set his sights upon powered flight: he developed a triplane that was to be powered by a 4 hp (3 kW) engine; however, construction of the triplane put him heavily into debt, and Pilcher needed sponsorship to complete his work.
Pilcher formed a company with Walter Gordon Wilson, who was later to become a successful motor engineer and credited by the 1919 Royal Commission on Awards to Inventors as the co-inventor of the tank, along with Sir William Tritton.