History of Rockets
The history of rockets come from an American rocketry pioneer Robert H. Goddard and his first liquid-fueled rocket, March 16, 1926. He is considered the father of modern rocket propulsion. Many cultures used rockets but the first to use a rocket was a Greek man named Archytas (a Roman) who lived in the city of Tarentum (now a part of southern Italy). The writings of Aulus Gellius, one of the first devices to successfully employ the principles essential to rocket flight was a wooden bird. The earliest rockets created was used was in 1232, at this time, the Chinese and the Mongols were at war with each other. Rockets have evolved over the years before in the 17th century Sir Isaac Newton used rockets scientific understanding
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In the military rockets are used in different ways. Some rockets are used as missiles, with explosive payloads. Other rockets are used to place satellites in orbit. Scientists use satellites NASA satellites help scientists study Earth and space. Satellites looking toward Earth provide information about clouds, oceans, land and ice. They also measure gases in the atmosphere, such as ozone and carbon dioxide, and the amount of energy that Earth absorbs and emits. And satellites monitor wildfires, volcanoes and their smoke. Rockets work in the same way. Exhaust gases coming out of the engine nozzle at high speed push the rocket forward. Rockets are capable of launching and escaping Earth atmosphere only by using enormous amounts of fuel to generate thrust. First Law describes how an object acts when no force is acting upon it. So, rockets stay still until a force is applied to move them. Most liquid chemical rockets use two separate propellants: a fuel and an oxidizer. Typical fuels include kerosene, alcohol, hydrazine and its derivatives, and liquid hydrogen. Many others have been tested and used. Oxidizers include nitric acid, nitrogen tetroxide, liquid oxygen, and liquid fluorine. Since most future missions will utilize GPS satellite