Phillips developed an early interest in flight and devoted much time and money to the study of aerodynamics. In the early 1880s he built a wind tunnel to test aerofoils, and took out patents for aerofoils in 1884 and 1891.
He also built a 15 ft radius rotating arm to test wing sections. In 1893 he built a tethered steam-powered model aircraft, and eventually he built full size aircraft with numerous wings of narrow chord, and with one of these he managed to make a flight of about 500 ft. in 1907.
(Grace's Guide)