How did Qian Xuesen return to China?

From 65438 to 0955, after continuous efforts of Premier Zhou Enlai's diplomatic negotiations with the United States-even including the release of 1 1 American pilots captured in the Korean War, Qian Xuesen received a notice from the US Immigration Bureau allowing him to return to China on August 4, 1955.

1955 September 17, Qian Xuesen's wish to return to China finally came true. On this day, Qian Xuesen, with his wife Jiang Ying and a pair of young children, embarked on a journey to return to the motherland. 1On October 8th, Qian Xuesen's family finally returned to the haunted motherland.

On June 5438+1October 365438+1October 2009, at 8: 06 am Beijing time, Qian Xuesen died in Beijing at the age of 98.

Extended data:

Qian Xuesen's main achievements:

1, two bombs and one satellite

At the beginning of 1956, Qian Xuesen put forward the Opinions on Establishing China's National Defense Aviation Industry to the Central Committee and the State Council. At the same time, Qian Xuesen established the first rocket and missile research institute in China, the Fifth Research Institute of the Ministry of National Defense, and served as the first president. He presided over the completion of the "jet and rocket technology" program, participated in the development of short-range missiles, medium-and short-range missiles and China's first artificial earth satellite, and directly led the "two-bomb combination" test of medium-and short-range missiles carrying atomic bombs.

2. Applied mechanics

Qian Xuesen has done pioneering work in many fields of mechanics. He has made many achievements in aerodynamics, the most prominent of which is the similarity law of transonic flow. Together with Carmen, he put forward the concept of hypersonic flow for the first time, which provided a theoretical basis for aircraft to overcome thermal and sound barriers in the early stage and laid an important theoretical foundation for the development of aerodynamics.

3. Physical mechanics

Qian Xuesen's research on combining the physical, chemical and mechanical properties of rare gases in 1946 is a pioneering work. 1953, he formally put forward the concept of physical mechanics, which greatly saved manpower and material resources and opened up a new field of high temperature and high pressure.

4, aerospace and jet aircraft

From the 1940s to the early 1960s, Qian Xuesen put forward some important concepts in the field of rockets and aerospace. In the 1940s, he proposed and realized a rocket-assisted takeoff device (JATO) to shorten the runway distance.

Baidu Encyclopedia-Qian Xuesen