astronomy

Guo Yonghuai

Guo Yonghuai is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Guo Yonghuai rather than just read about it. In short: Guo Yonghuai (also spelled Yung-Huai Kuo, Chinese: 郭永怀; April 4, 1909 – December 5, 1968) was a Chinese aerospace engineer and aerodynamics scientist. Biography Guo was born in Rongcheng, Shandong.

Key takeaways

Guo Yonghuai belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Guo Yonghuai to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Guo Yonghuai from memory before moving on to harder problems.

Reference excerpt

Guo Yonghuai (also spelled Yung-Huai Kuo, Chinese: 郭永怀; April 4, 1909 – December 5, 1968) was a Chinese aerospace engineer and aerodynamics scientist.

Biography Guo was born in Rongcheng, Shandong. He started his undergraduate education at Nankai University in 1930, transferred to the department of physics at Peking University in 1933, and graduated from Peking University in 1935. He enrolled in an oversea program in 1939 and entered the University of Toronto in Canada in 1940 and obtained a master's degree there. From 1941 to 1945, Guo studied compressible hydrodynamics at the California Institute of Technology. After obtaining a Doctor of Philosophy degree in aeronautics, he stayed there as a research fellow. From 1946, he became an associate professor and later, professor at Cornell University. Invited by Qian Xuesen, Guo returned to China in October 1956 and became the vice director of the Institute of Mechanics of the Chinese Academy of Sciences. Guo was a founder of mechanics in mainland China and made significant contributions to mechanics, applied mathematics and aeronautics. In 1958, he helped found the University of Science and Technology of China and served as the chair of the department of Chemical Physics. Beginning in May 1960, Guo served as vice director of the Beijing Ninth Research Institute of the Second Ministry of Industry, and became a leader of China's atomic and hydrogen bomb projects. He led work in explosive mechanics, high-pressure physical property equations, aerodynamics, aeronautics, structural mechanics, and weapon experimental environment, and solved a series of important problems. In December 1982, China's Science Press published The Works of Guo Yonghuai. Guo married the linguist Li Pei. They had one daughter. He died of a plane crash near Beijing Capital International Airport on December 5, 1968, when traveling from Qinghai to Beijing. When crashing, he and his guard, Mou Fangdong, protected the data from being destroyed.

Awards and honors In 1985, he was awarded a Grand Prize of National Science and Technology Advancement. In 1999, Guo won the Two Bombs, One Satellite Achievement Medal. In 2018, the asteroid 212796 Guoyonghuai was named in his memory.

References

Illustrations

Worked examples

Example 1 — a first encounter with Guo Yonghuai

Start with the simplest possible case. Write down what Guo Yonghuai claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Guo Yonghuai before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Guo Yonghuai ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Guo Yonghuai

In research: Guo Yonghuai appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Guo Yonghuai in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Guo Yonghuai is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1909 births, 1968 deaths, Aerodynamicists, so understanding it makes those chapters shorter.
In everyday life: Look for Guo Yonghuai outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Guo Yonghuai in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Guo Yonghuai means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Guo Yonghuai out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Guo Yonghuai in simple terms?

Guo Yonghuai (also spelled Yung-Huai Kuo, Chinese: 郭永怀; April 4, 1909 – December 5, 1968) was a Chinese aerospace engineer and aerodynamics scientist. Biography Guo was born in Rongcheng, Shandong.

Why does Guo Yonghuai matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Guo Yonghuai?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Guo Yonghuai.