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Left to right: [[Ludwig Prandtl (German scientist), Hsue-Shen Tsien, Theodore von Kármán. Prandtl served Germany during World War II; von Kármán and Tsien served the United States; after 1956, Tsien served China. Tsien's overseas cap displays his temporary U.S. Army rank of colonel. Prandtl was von Kármán's doctoral adviser; von Kármán in turn was Tsien's.]]

Left to right: [[Ludwig Prandtl (German scientist), Hsue-Shen Tsien, Theodore von Kármán. Prandtl served Germany during World War II; von Kármán and Tsien served the United States; after 1956, Tsien served China. Tsien's overseas cap displays his temporary U.S. Army rank of colonel. Prandtl was von Kármán's doctoral adviser; von Kármán in turn was Tsien's.]]

从左到右: [路德维希 普朗特(德国科学家) ，钱学森，西奥多·冯·卡门。普朗特在第二次世界大战期间为德国服务; 冯·卡门和钱学森为美国服务; 1956年后，钱学森为中国服务。钱保留的海外军帽展示了他暂时的美国陆军上校军衔。普朗特是冯·卡门的博士生导师，而冯·卡门则是钱学森的博士生导师

从左至右: [路德维希 普朗特(德国科学家) ，钱学森，西奥多•冯•卡门。普朗特在第二次世界大战期间为纳粹德国服务; 冯•卡门和钱学森为美国服务; 1956年后，钱学森为中国服务。钱学森保留的海外军帽展示了他当年的美国陆军上校军衔（暂）。普朗特是冯•卡门的博士生导师，而冯•卡门则是钱学森的博士生导师。

 

 

Shortly after arriving at Caltech in 1936, Tsien became fascinated with the rocketry ideas of Frank Malina, other students of von Kármán, and their associates, including Jack Parsons. Along with his fellow students, he was involved in rocket-related experiments at the Guggenheim Aeronautical Laboratory at Caltech. Around the university, the dangerous and explosive nature of their work earned them the nickname "Suicide Squad." Tsien received his PhD from Caltech in 1939.

Shortly after arriving at Caltech in 1936, Tsien became fascinated with the rocketry ideas of Frank Malina, other students of von Kármán, and their associates, including Jack Parsons. Along with his fellow students, he was involved in rocket-related experiments at the Guggenheim Aeronautical Laboratory at Caltech. Around the university, the dangerous and explosive nature of their work earned them the nickname "Suicide Squad." Tsien received his PhD from Caltech in 1939.

During the Second World War, Tsien worked in the Manhattan Project, which led to America successfully developing the first atomic bomb. In 1943, Tsien and two other members of their rocketry group drafted the first document to use the name Jet Propulsion Laboratory (JPL), originally a proposal to the Army for developing missiles in response to Germany's V-2 rocket. This led to Private A, which flew in 1944, and later the Corporal, the WAC Corporal, and other designs.

During the Second World War, Tsien worked in the Manhattan Project, which led to America successfully developing the first atomic bomb. In 1943, Tsien and two other members of their rocketry group drafted the first document to use the name Jet Propulsion Laboratory (JPL), originally a proposal to the Army for developing missiles in response to Germany's V-2 rocket. This led to Private A, which flew in 1944, and later the Corporal, the WAC Corporal, and other designs.

第二次世界大战期间，钱学森参与曼哈顿计划，帮助美国成功研制出第一颗原子弹。1943年，钱学森和他们火箭研究小组的另外两名成员起草了第一份文件，使用喷气推进实验室（JPL）这个名字，这最初是向陆军提出的一项针对德国V-2火箭发展导弹的建议。这促成了1944年的私人飞机A，以及后来的下士，WAC下士和其他设计。

第二次世界大战期间，钱学森参与了曼哈顿计划，帮助美国成功研制出第一颗原子弹。1943年，钱学森和他们火箭研究小组的另外两名成员第一次使用喷气推进实验室（JPL）这个名字起草了一份文件，这最初是向美国陆军提出的一项针对德国V-2火箭发展导弹的建议。这催生了1944年的私人飞机A，以及后来的下士，WAC下士和其他型号的设计。

In 1945, as an Army colonel with a security clearance, Tsien was sent to Germany to investigate laboratories and question German scientists, including [[Wernher von Braun]].<ref>{{Cite news|url=https://www.nytimes.com/2009/11/04/world/asia/04qian.html|title=Qian Xuesen, Father of China's Space Program, Dies at 98|last1=WINES|first1=MICHAEL|date=2009-11-04|work=[[New York Times]]|access-date=2019-11-24|language=en}}</ref><ref>{{Cite news|url=https://www.wsj.com/articles/SB125721495250424443|title=Trained in the U.S., Scientist Became China's 'Rocket King'|date=2009-11-04|work=[[Wall Street Journal]]|access-date=2019-11-24|language=en}}</ref>

In 1945, as an Army colonel with a security clearance, Tsien was sent to Germany to investigate laboratories and question German scientists, including [[Wernher von Braun]].<ref>{{Cite news|url=https://www.nytimes.com/2009/11/04/world/asia/04qian.html|title=Qian Xuesen, Father of China's Space Program, Dies at 98|last1=WINES|first1=MICHAEL|date=2009-11-04|work=[[New York Times]]|access-date=2019-11-24|language=en}}</ref><ref>{{Cite news|url=https://www.wsj.com/articles/SB125721495250424443|title=Trained in the U.S., Scientist Became China's 'Rocket King'|date=2009-11-04|work=[[Wall Street Journal]]|access-date=2019-11-24|language=en}}</ref>

In 1945, as an Army colonel with a security clearance, Tsien was sent to Germany to investigate laboratories and question German scientists, including Wernher von Braun.

In 1945, as an Army colonel with a security clearance, Tsien was sent to Germany to investigate laboratories and question German scientists, including Wernher von Braun.

Tsien married Jiang Ying (蒋英), a famed opera singer and the daughter of Jiang Baili (蒋百里) and his wife, Japanese nurse Satô Yato. The elder Jiang was a military strategist and adviser to Kuomintang leader Chiang Kai-shek. The Tsiens were married on 14 September 1947 in Shanghai, and had two children; their son Qian Yonggang (钱永刚, also known as Yucon Tsien) was born in Boston on 13 October 1948, while their daughter Qian Yongzhen (钱永真) was born in early 1950 when the family was residing in Pasadena, California.

Tsien married Jiang Ying (蒋英), a famed opera singer and the daughter of Jiang Baili (蒋百里) and his wife, Japanese nurse Satô Yato. The elder Jiang was a military strategist and adviser to Kuomintang leader Chiang Kai-shek. The Tsiens were married on 14 September 1947 in Shanghai, and had two children; their son Qian Yonggang (钱永刚, also known as Yucon Tsien) was born in Boston on 13 October 1948, while their daughter Qian Yongzhen (钱永真) was born in early 1950 when the family was residing in Pasadena, California.

钱学森娶了著名歌剧演员蒋英，蒋百里和他的妻子：日本护士SatôYato的女儿。蒋百里是国民党领导人蒋介石的军事战略家和顾问。钱学森夫妇于1947年9月14日在上海结婚，育有两个孩子；他们的儿子钱永刚（又称Yucon Tsien）于1948年10月13日出生在波士顿，而他们的女儿钱永珍则出生于1950年初，当时全家住在加州帕萨迪纳。  

钱学森娶了著名歌剧演员蒋英，她是蒋百里和他的妻子：日本护士SatôYato的女儿。蒋百里是国民党领导人蒋介石的军事战略家和顾问。钱学森夫妇于1947年9月14日在上海结婚，育有两个孩子；他们的儿子钱永刚（又称Yucon Tsien）于1948年10月13日出生在波士顿，而他们的女儿钱永珍则出生于1950年初，当时全家住在加州帕萨迪纳。

 

Shortly after his wedding, Tsien returned to America to take up a teaching position at MIT. Jiang Ying would join him in December 1947. In 1949, with the recommendation of von Kármán, Tsien became Robert H. Goddard Professor of Jet Propulsion at Caltech.

Shortly after his wedding, Tsien returned to America to take up a teaching position at MIT. Jiang Ying would join him in December 1947. In 1949, with the recommendation of von Kármán, Tsien became Robert H. Goddard Professor of Jet Propulsion at Caltech.