Sir Roy Fedden

Bristol radial aero engines Sir Roy Fedden 1885-1973 Jupiter 1920, Mercury 1927, Pegasus 1931 sleeve valve - Perseus 1932, Hercules 1936 Taurus 1937, Centaurus 1938

Sir Roy Fedden was a pioneering British aeronautical engineer known for designing a series of influential Bristol radial aero engines, including the Jupiter, Mercury, and Pegasus, which played a significant role in early 20th-century aviation. His innovative sleeve valve technology and engine designs contributed to the advancement of aircraft performance and reliability during a critical period in aviation history.