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Von Kármán wrote of Tsien, "At the age of 36, he was an undisputed genius whose work was providing an enormous impetus to advances in high-speed aerodynamics and jet propulsion." During this time, he worked on designing an intercontinental space plane, which would later inspire the X-20 Dyna-Soar, a precursor to the American Space Shuttle.

Von Kármán wrote of Tsien, "At the age of 36, he was an undisputed genius whose work was providing an enormous impetus to advances in high-speed aerodynamics and jet propulsion." During this time, he worked on designing an intercontinental space plane, which would later inspire the X-20 Dyna-Soar, a precursor to the American Space Shuttle.

冯·卡门在提到钱学森时写道: “在他36岁的时候，他是一个无可争议的天才，他的工作为高速空气动力学和喷气推进技术的发展提供了巨大的动力。”在此期间，他致力于设计一种洲际航天飞机，它是美国航天飞机的前身，并为后来X-20 Dyna-Soar的生产带来了灵感。

冯·卡门在提到钱学森时写道: “在他36岁的时候，他是一个无可争议的天才，他的工作为高速空气动力学和喷气推进技术的发展提供了巨大的动力。”<ref name="2008poy">{{cite journal |url = http://www.aviationweek.com/aw/generic/story_generic.jsp?channel=awst&id=news/aw010708p1.xml |title = Qian Xuesen Laid Foundation For Space Rise in China |last1 = Perrett |first1 = Bradley |date = {{Date|2008-01-06|dmy}} |journal = Aviation Week and Space Technology |volume = 168 |number = 1 |archive-url = https://web.archive.org/web/20110521055346/http://www.aviationweek.com/aw/generic/story_generic.jsp?channel=awst&id=news%2Faw010708p1.xml |archive-date = 2011-05-21 |url-status = dead |access-date = {{Date|2015-02-02|dmy}} }}</ref>在此期间，他致力于设计一种洲际航天飞机，它是美国航天飞机的前身，并为后来X-20 Dyna-Soar的生产带来了灵感。