Hugo junkers (1859~ 1935) is a famous German aircraft designer, thermodynamics expert and aviation industry entrepreneur. Yongkeshi Watch began to design and develop aircraft in 1908, successfully developed an all-metal cantilever monoplane in 1909, and built the first German wind tunnel in Aachen in19/3. 19 15, Junker Company developed the world's first all-metal single-wing, legless and tensionless aircraft. In the process of aircraft development, the static test of aircraft was first carried out. The aircraft manufacturing company and aircraft engine company founded by junkers produce a variety of aircraft models and aero-engines, which have laid an important foundation for the future development and progress of aircraft.