《technology--Space Age》.ppt

The Space Age ----Welcome! A brand new application in technology—the conquest of space ﹡ Robert. Goddard was one of the first scientists to experiment with rocket propulsion systems. ﹡ In his small laboratory in Worcester, Massachusetts, Goddard worked with liquid oxygen and gasoline to propel rockets into the atmosphere. In 1926, he successfully fired the world’s first liquid-fuel rocket, which reached a height of 12.5 meters. ﹡ Over the next ten years, Goddard’s rockets achieved modest altitudes of nearly two kilometers, and interest in rocketry increased in the United States, Great Britain, Germany, and the Soviet Union. Robert Hutchings Goddard Robert Goddard once said that “the dream of yesterday is the hope of today and the reality of tomorrow.” It was his scientific work that gave hope to many of our dreams about space… and then turned them into reality. ＆Robert Goddard’s many studies and tests in the early 1900s led to the first rocket. Then he developed rockets with more than one engine. Each engine pushed the rocket higher and higher out of earth’s atmosphere. His ideas are still used today. So, in a way, every rocket that flies today is a Goddard rocket. ＆Robert Goddard was far ahead of his time. Orville and Wilbur Wright made the first controlled airplane flight at Kitty Hawk, north Carolina in 1903. Other scientists and inventors after that experimented with planes, but Robert Goddard wanted to make a machine that flew in a different way from a plane. He called his first two designs “rocket apparatus”. ＆Goddard developed and flew many rockets that got their power from solid fuels—chemicals made hard. Then, in 1925,he made and tested the first rocket engine using a soft chemical fuel. In 1926,he successfully fired the world’s first liquid--fuel rocket. ＆Many historians consider that rocket flight a