飞行器(flight vehicle)是由人类制造、能飞离地面、在空间飞行并由人来控制的在大气层内或大气层外空间(太空)飞行的器械飞行物。在大气层内飞行的被称为航空器,在太空飞行的被称为航天器。人类很早就有像鸟类一样在空中飞行的梦想,古希腊的阿尔希塔斯所制造的机械鸽、澳大利亚的飞去来器以及中国的孔明灯和风筝都见证了人类飞行于天空的梦想。在中国古代,有人在文学著作中描述了飞行的理想,而且还有人设计了一 Flight vehicles are instrument flying objects that are made by humans and can fly in the atmosphere or in the extra-atmospheric space (space) that can fly off the ground, fly in space and are controlled by humans. Flying in the atmosphere called aircraft, flying in space is called a spacecraft. Mankind has long had the dream of flying in the air like a bird. The mechanical pigeons made by Archetes of ancient Greece, the flyers from Australia, and the lanterns and kites of China all witness the dream of human flying in the sky. In ancient China, some people described the ideal of flying in literary works, and some also designed one