The Coanda-1910 experimental aircraft is displayed at the Second International Aeronautical Exhibition at the Grand Palais in Paris, October 1910. The aircraft was designed by Romanian inventor Henri Coanda (1886 - 1972) and was most notable for its unique engine, which Coanda later claimed to be a precursor to jet engines. Photo: Roger Viollet, Roger Viollet/Getty Images / 2010 Getty Images