航天科技概论作业（Introduction to Aerospace Science and technology）.doc

航天科技概论作业（Introduction to Aerospace Science and technology） Chapter 1: overview of Aerospace Science and technology 1, aviation, aerospace, HangYu has what different meanings? Air: of aircraft flying in the atmosphere near the earth. Space: refers to the man-made earth satellite, spacecraft, etc., in the space near the earth or the solar system space flight. HangYu: refers to the artificial earth satellite, spacecraft in the Milky Way system and extragalactic activities. 2. A brief history of human spaceflight. In October 4, 1957 the Soviet Union launched the worlds first man-made earth satellite. Six months later, American satellites came into the air In September 12, 1959 the Soviet Union launched the Moon 2 spacecraft, as the first spacecraft crashing into the lunar surface in the world In April 12, 1961, Soviet cosmonaut Gagarin became the first person in the world who fly into space In July 20, 1969, American astronaut Armstrong took the Appollo No. 11 spacecraft, becoming the first man to set foot on the moon The former Soviet Union in December 15, 1970 7 Venus spacecraft for the first time landing on Venus In April 9, 1971 the Soviet Salyut 1 space station became the first human in space space station. Two years later, the United States sent Skylab into space The former Soviet Union in December 2, 1971 3 Mars spacecraft on the surface of Mars landing. 5 years later, Americas Viking Mars probe landed on Mars In April 12, 1981, the worlds first space shuttle, the American Columbia shuttle, was launched successfully In January 28, 1986, the American space shuttle Challenger exploded after liftoff for 73 seconds In February 20, 1986 the Soviet Union launched the Mir space station, the service has been extended to 8 years, is still in operation, is currently the most successful human space station In November 1993, 1 Japan, the United States and Russia signed an agreement, decided to build an international space station on the basis of the peace space station, name