High Quality Content by WIKIPEDIA articles! Jurgis Kairys (born May 6, 1952 in Krasnojarsk, Siberia in Lithuanian family deported after Soviet occupation) is a Lithuanian aerobatic pilot and aeronautical engineer. He has won many awards for his flying and has invented several maneuvers, including the "Kairys Wheel." He helped develop the Sukhoi Su-26, -29, and -31 aerobatic aircraft, and also has manufactured his own aerobatic aircraft, called the "Juka."