Autopilot reducing the pilot's workload. Lawrence Sperry (the son of famous inventor Elmer Sperry) demonstrated it in 1914 at an aviation safety contest held in Paris. At the contest, Sperry demonstrated the credibility of the invention by flying the aircraft with his hands away from the controls and visible to onlookers of the contest. Elmer Sperry Jr., the son of Lawrence Sperry, and Capt Shiras continued work after the war on the same autopilot, and in 1930 they tested a more compact and reliable autopilot which kept a US Army Air Corps aircraft on a true heading and altitude for three
Memorial of the War to Resist US Aggression and Aid Korea China's largest panoramic painting when the museum opened in 1993. The painting encircles a revolving viewing platform in the centre of the hall. The memorial tower is tall, which signifies the year 1953, when the Korean Armistice Agreement was signed. The tower's name is written in the calligraphy of Deng Xiaoping. Memorial of the War to Resist US Aggression and Aid Korea The Memorial of the War to Resist US Aggression and Aid Korea (), also translated as the Korean War Museum, is a museum in Dandong, Liaoning. It is the only official museum in China that memorializes the Korean