Qian Xuesen (Tsien Hsue-shen), whose name means “study to be wise,” was born to a privileged family in Hangzhou, China, in 1911. Qian graduated at the top of his class from Jiaotong University in Shanghai, China’s best engineering school. Deciding that aviation was the wave of the future and aware of how far behind his country lagged in this area, Qian looked abroad to further his education. In 1935, with his country torn by Japanese aggression and internal opposition to the Nationalist government, he accepted an American-sponsored scholarship and quickly earned a master’s degree in aeronautical engineering from the Massachusetts Institute of Technology (MIT). One year later, he began doctoral work at the California Institute of Technology (Caltech) in Pasadena.

At Caltech, Qian joined a group of scientists working on questions about flight and contributed to the development of theoretical aerodynamics and jet propulsion, which eventually provided a foundation for America’s space program. School officials were so impressed with Qian’s work that they helped him get a visa extension, and in 1942 the government gave him security clearance so that he could work on secret military projects. Qian served on the air force’s Scientific Advisory Board, and after World War II he went on a U.S. mission to interview Nazi scientists in Germany. He spent a year on the faculty at MIT and then traveled home to China amid the turmoil of a civil war between the Communists, led by Mao Zedong (Mao Tse-tung), and the Nationalist government of Jiang Jieshi (Chiang Kai-shek). There Qian spent time with his father, gave motivational speeches to large audiences of students, and married a woman he had known in childhood, an opera singer and the daughter of one of Jiang Jieshi’s generals.

In 1949, when he returned to Caltech to direct the Jet Propulsion Center, teach, continue his research, and entertain a close circle of colleagues with classical music and elaborate dinners, Qian seemed to have everything necessary to lead a rich life and pursue his lifelong passion for science. He applied for U.S. citizenship. One year later, after the Communists had taken control of China, the U.S. government revoked Qian’s security clearance. The FBI interrogated him about a group he had socialized with in the 1930s, which the FBI said was a cell of the Communist Party. Qian denied any participation in Communist activities, but the proud, angry, and humiliated scientist concluded that, given the “cloud of suspicion . . . the only gentlemanly thing left to do is to depart.” The promise of a brilliant career shattered, he resisted Caltech officials who begged him to remain; instead, he readied a shipment of his belongings to send on to China. The government seized the shipment and accused Qian of taking secret documents. Although the claim was later refuted, the Immigration and Naturalization Service arrested him. He was released after two weeks, but for the next five years the government refused to let him go and kept him and his family under constant surveillance. Although Caltech administrators worked furiously to clear his name, some of his associates began to avoid him, fearing that they, too, would be caught up in the hunt for Communists. Finally, in 1955, he was deported as part of a prisoner of war exchange following the Korean War.

Qian disembarked in China with his wife and two children to a hero’s reception and a career that would eventually earn him the title of “father of Chinese rocketry.” Denied the full use of his talents by the United States, he organized and led China’s rocketry program, developing its ballistic missiles and satellites. Like anyone who hoped to have a successful career in China, he became a trusted Communist Party official. Though the extremely private scientist said little about his experiences in the United States, he refused to return in 1979 to accept Caltech’s Distinguished Alumni Award. Qian had lost faith in the U.S. government but maintained affection for the American people and sent both his children to study at American universities. Qian died in China in 2009 at the age of ninety-eight.

Questions linger about Qian’s associations and intentions in the United States. A 1999 congressional report maintained that he had been a spy, but his supporters claimed that the report lacked evidence. Every one of his Caltech colleagues vouched for his integrity, and some went to great lengths to defend him against government charges. Dan A. Kimball, who was secretary of the navy in the early 1950s, later said that Qian’s deportation “was the stupidest thing this country ever did. He was no more a Communist than I was—and we forced him to go.” The Red scare dashed Qian’s belief that America promised an opportunity for any talented individual to live a free and prosperous life. It also delivered a brilliant scientist to the nation’s enemy.

Questions for Consideration

Connect to the Big Idea

How were other people and ideas silenced during the Red scare?