What efforts did the motherland make to allow Qian Xuesen to return to China

Qian Xuesen" IV Analysis of Qian Xuesen's Teaching Materials This article vividly recounts that when Qian Xuesen, a famous scientist in China, never forgot the motherland for a moment, and made outstanding contributions to the development and launch of China's carrier rockets and missiles after returning to China, and praised him for never forgetting the noble feelings of the motherland. The language of the text is concise and plain. Through the characters.

Qian Xuesen" V.

Qian Xuesen" 5 Teaching Objectives: 1. Be able to read texts correctly, fluently and emotionally. 2. Learn the 8 new words in this lesson and understand the words composed of new words.

3. Through the training of language and writing, I can experience Qian Xuesen's thoughts and feelings of loving the motherland. Teaching difficulties: 1. Learn to understand that Qian Xuesen gave up preferential treatment and returned to China to contribute to the take-off and development of the motherland.

2. Experience that Qian Xuesen broke through the obstacles. Qian Xuesen" one.

Qian Xuesen" 1 [Teaching Objectives] 1. Understand the meaning of some important sentences and feel the deep affection of patriotism and serving the country. 2. Understand the brilliance of Qian Xuesen's achievements and various efforts to return to the motherland, ** the Chinese knowledge points embodied in him. Qian Xuesen" III.

Qian Xuesen》 Teaching Objectives: 1. Be able to read texts correctly, fluently and emotionally. 2. Learn the 8 new words in this lesson and understand the words composed of new words.

3. Through the training of language and writing, I can experience Qian Xuesen's thoughts and feelings of loving the motherland. Teaching difficulties: 1. Learn to understand that Qian Xuesen gave up preferential treatment and returned to China to contribute to the take-off and development of the motherland.

2. Experience Qian Xuesen's breakthrough through the obstacles, in order to. Qian Xuesen" II.

Qian Xuesen 2 Teaching process: 1st class 1. Reveal the topic and set up suspense 1. Unveil the topic and introduce the characters. (1) Exchange the information about Qian Xuesen that you found before the class.

2) Teacher's summary: Qian Xuesen: Born in 1911, his ancestral home is Hangzhou, Zhejiang, and he was born in Shanghai.

He graduated from Shanghai Jiao Tong University in 1934 and went to the United States to study the following year. He received his doctorate in 1938.

Qian Xuesen made a total of 2 efforts, the first time Qian Xuesen prepared three light small boxes every day, and he could return to China at any time. The second time I wrote a letter asking for help from the motherland...

Qian Xuesen returned to China after continuous efforts in diplomatic negotiations with the United States.

In 1950, when Qian Xuesen went to the port to prepare to return to China, he was stopped by the United States**, put him in prison, and detained him on Termina Island for 14 days, until he was released after receiving a huge bail of 10,000 US dollars from the California Institute of Technology.

In 1955, after the Prime Minister's continuous efforts in diplomatic negotiations with the United States - including the release of 11 American pilots captured in the Korean War in exchange; On August 4, Qian Xuesen received a notice from the USCIS that he would be allowed to return to China.

On September 17, Qian Xuesen, with his wife Jiang Ying and a pair of young children, boarded the ship "Cleveland**" and embarked on a journey back to the motherland; On October 8, Qian Xuesen's family finally returned to their homeland.

Qian Xuesen's main contributions:

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

The formula used in the design of high subsonic aircraft is the Carmen-Qian Xuesen formula, named after Carmen and Qian Xuesen. In addition, Qian Xuesen and Carmen jointly proposed a new theory of nonlinear instability of spherical and cylindrical shells at the end of the 30s.

Qian Xuesen has done pioneering work in aerodynamics and solid mechanics of applied mechanics; The study of the compressible boundary layer in collaboration with von Kármán revealed some temperature variations in this field and created the "Kármen-Money Approximation" equation. In cooperation with Guo Yonghuai, he was the first to introduce the concept of upper and lower critical Mach numbers in the transonic flow problem.

Qian Xuesen personally has a strong desire to return to China, and the United States is a relatively democratic and free country, so it still respects individual human rights. Although the United States did everything possible to obstruct Qian Xuesen's return to China, they did not dare to mess around, because once the outside world got the evidence that Qian Xuesen wanted to return to China, it would be very troublesome, and it would have a certain impact on the image of the United States.

Therefore, they created all kinds of excuses to prevent him from returning to China, and closely monitored him to prevent him from coming into contact with outsiders, for fear that the outside world would get evidence that he wanted to return to China. In order to get rid of the control of the United States, Qian Xuesen wrote a letter asking for help on cigarette paper, sent it to a Belgian friend's house with a book, and then sent it to China.

China attaches great importance to this rescue operation, China used this special letter for help to negotiate with the United States, exposing the lies of Americans' human rights and freedom, and the United States had to release them in the face of ironclad evidence.

Qian Xuesen, a world-famous scientist, aerodynamicist, the founder of China's manned spaceflight, an academician of the Chinese Academy of Sciences and the Chinese Academy of Engineering, a winner of China's two bombs and one satellite meritorious service medal, is known as the "father of China's aerospace", "the father of China's missiles", "the father of China's automation control" and "the king of rockets". In 1956, he was appointed to establish China's first rocket and missile research institute, the Fifth Research Institute of the Ministry of National Defense, and served as its first president. He presided over the completion of the "establishment of jet and rocket technology" plan, participated in the development of short-range missiles, medium- and short-range missiles, and China's first artificial earth satellite, directly led the "two-bomb combination" test of using medium- and short-range missiles to deliver atomic bombs, participated in the formulation of China's short-range missile delivery atomic bomb "two-bomb combination" test, participated in the formulation of China's first interstellar aviation development plan, and developed and established engineering cybernetics and systematics.

He has made pioneering contributions in the fields of aerodynamics, aeronautical engineering, jet propulsion, engineering cybernetics, physical mechanics and other technical sciences. He is the founder and advocate of the theory and application of modern mechanics and systems engineering in China.

He also has certain research in two bombs and one satellite, applied mechanics, physical mechanics, aerospace and jet, engineering cybernetics, systems science, systems engineering, human science, and thinking science.

In order to build the national defense cause of New China and serve the people, China at that time had just gone through the war and urgently needed to be rebuilt, and there was a great demand for talents, especially military science and technology talents. It is the reserve or a strong sense of mission and national honor that allows this talent to break through all difficulties and return to a place from scratch without equipment and data, regardless of the generous treatment of the United States.

But that's it, he worked hard to establish my country's aerospace industry, and was called the "father of China's aerospace" and "the father of China's missiles", and his strong sense of national identity made him desperate.

Qian Xuesen is a well-known physicist who has made outstanding contributions to China's space missile industry. Before he returned to China, the commander of the US Navy said that one Qian Xuesen could top 18 divisions. For Qian Xuesen's return to China, Comrade Former Prime Minister *** personally cared about it and personally arranged to talk to the United States.

It should have reached some kind of exchange before Qian Xuesen returned to China.

It was a lot of effort, but it was all worth it.

However, at that time, the United States forbade any Chinese students to return to China, especially the restrictions on Qian Xuesen were very large, and even said that Qian Xuesen could top five divisions, and if it was released back to China, it would pose a great threat to himself. It was at that time that my country made the right choice.

Qian Xuesen is an aerodynamicist and an expert in nuclear research. The Americans said that he was equivalent to five divisions and would rather kill him than let him return to China.

China traded 20 prisoners of war in exchange, but the United States still did not want to let him go. Later, with the help of friends, he skillfully returned to his homeland.

In the end, China expressed its willingness to exchange 11 US fighter pilots for Qian Xuesen, and the vast majority of people must know how important fighter pilots are to the country.

In the end, China expressed its willingness to exchange 11 US fighter pilots for Qian Xuesen.

It cost a lot, but it's straight.

The inventor and pioneer of 10,000 catties of grain,