EARLY YEARS -- KITTY HAWK, NC -- First flight, Dec. 17, 1903. Distance, 120 feet. Time, 12 seconds. Orville Wright at controls. (U.S. Air Force photo)

#美国创新# 自1939年起，8月19日就成为“国家航空日”受到庆祝。它起源于一份总统公告，是由富兰克林·D·罗斯福为庆祝民用航空先驱奥维尔·莱特的生日而首次颁布的。你知道吗？现在美国运营中的每架飞机都会使用某种由美国国家航空航天局研发的技术。

Ever since 1939, August 19 has been celebrated as National Aviation Day, the legacy of a presidential proclamation first made by Franklin D. Roosevelt to celebrate the birth date of civil aviation pioneer Orville Wright. Did you know that every U.S. aircraft in operation today use some kind of NASA-developed technology?

Link: https://www.nasa.gov/aeroresearch/fun-ways-to-fly-this-national-aviation-day