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astronomy

Song Jian

Song Jian 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 Song Jian rather than just read about it. In short: Song Jian (Chinese: 宋健; Wade–Giles: Sung Chien; born 29 December 1931) is a Chinese aerospace engineer, demographer, and politician. He was deputy chief designer of China's submarine-launched ballistic missile (JL-1) and one of the country's leading scientists in the post-Cultural Revolution era.

Song Jian — main illustration
Song Jian — illustration

Key takeaways

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

Reference excerpt

Song Jian (Chinese: 宋健; Wade–Giles: Sung Chien; born 29 December 1931) is a Chinese aerospace engineer, demographer, and politician. He was deputy chief designer of China's submarine-launched ballistic missile (JL-1) and one of the country's leading scientists in the post-Cultural Revolution era. After a decade of two-child restrictions in the 1970s, and following the Chinese government's announcement in 1979 to advocate for one child per family, he became a leading advocate for rapid implementation and broad coverage of China's one-child policy. He served in high-ranking political positions including Vice Minister of Aerospace Industry, Director of the State Science and Technology Commission (1985–1998), vice-premier-level State Councillor (1986–1998), President of the Chinese Academy of Engineering, Vice Chairperson of the Chinese People's Political Consultative Conference, and a member of the Central Committee of the Chinese Communist Party.

Early life and education Song Jian was born on 29 December 1931 in Rongcheng, Shandong Province. In 1946, he enlisted in the Chinese Communist Party's Eighth Route Army during the Chinese Civil War at the age of 14. After the establishment of the People's Republic of China in 1949, he studied at the Harbin Institute of Technology and Beijing Foreign Language Institute, before being sent to the Soviet Union in 1953 on the recommendation of Liu Shaoqi, Vice Chairman of China. Described as a "brilliant" student, he studied cybernetics and military science under the theorist A. A. Feldbaum. He earned an associate Ph.D. degree from Moscow State University and a Ph.D. from Bauman Moscow State Technical University. He published seven papers in Russian on control theory, which won praise from Soviet and American scientists.

Career After the Sino-Soviet split in 1960, Song returned to China and was put in charge of control systems at the Fifth Academy (later known as the Seventh Ministry of Machine Building or Missile Ministry) of the Ministry of National Defense. He was one of China's top experts on missile guidance systems. Qian Xuesen, the "father of China's space and missile defence programs", highly praised Song's ability and declared that Song was China's foremost control theorist, surpassing Qian himself. Qian personally chose Song to co-author the revised edition of his Engineering Cybernetics, regarded as a bible of Chinese military science. In 1962, Song and Guan Zhaozhi were recruited by Qian to establish China's first cybernetics laboratory with him. At the beginning of the Cultural Revolution, Song's home was ransacked by the Red Guards before Premier Zhou Enlai included him in the list of the top 50 scientists considered indispensable to national defence and afforded special protection. Song was sent to the Jiuquan Satellite Launch Center in the desert, where he could focus on his studies and research, before returning to Beijing in 1969. His work on anti-ballistic missiles attracted Zhou's attention. In the late 1970s, Song applied his expertise in cybernetics to the problem of population control and became a proponent of China's so-called one-child policy. At the same time, he continued to work in the missile and aerospace programs and rapidly ascended the political hierarchy. He was appointed deputy chief designer of JL-1, China's submarine-launched ballistic missile in February 1980 (under Huang Weilu), and Vice Minister of Aerospace Industry in 1982. In 1985 he became Director of the powerful State Science and Technology Commission, and the next year he additionally became a State Councillor, a vice-premier-level position. He held both positions until 1998, when he was appointed President of the Chinese Academy of Engineering and Vice Chairperson of the Chinese People's Political Consultative Conference (CPPCC). Song was an alternate member of the 12th Central Committee of the Chinese Communist Party, and a full member of the 13th, 14th, and 15th central committees.

… excerpt ends here. Continue reading the full article.

Illustrations

Song Jian illustration

Worked examples

Example 1 — a first encounter with Song Jian

Start with the simplest possible case. Write down what Song Jian 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 Song Jian 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 Song Jian 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 Song Jian

In research
Song Jian 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 Song Jian 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
Song Jian is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1931 births, Bauman Moscow State Technical University alumni, Beijing Foreign Studies University alumni, so understanding it makes those chapters shorter.
In everyday life
Look for Song Jian 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 Song Jian in 20 minutes

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

Frequently asked questions

What is Song Jian in simple terms?

Song Jian (Chinese: 宋健; Wade–Giles: Sung Chien; born 29 December 1931) is a Chinese aerospace engineer, demographer, and politician. He was deputy chief designer of China's submarine-launched ballistic missile (JL-1) and one of the country's leading scientists in the post-Cultural Revolution era.

Why does Song Jian 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 Song Jian?

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 Song Jian.

Tags

  • 1931 births
  • Bauman Moscow State Technical University alumni
  • Beijing Foreign Studies University alumni
  • Chinese aerospace engineers
  • Chinese demographers
  • Chinese expatriates in the Soviet Union
  • Control theorists
  • Cyberneticists
  • Foreign members of the Russian Academy of Sciences
  • Harbin Institute of Technology alumni
  • International members of the National Academy of Engineering
  • Living people

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