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Samantha Johnson

on 28 April 2010

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Transcript of rockets

Rockets a rocket or a rocket vehicle is a missle which obtains thrust from eject. USED IN THE MILLITARY FOR WEAPONS. The action of the fluid against the inside of combusion chambers and expansion nozzles is able to accelerate the fluid to extremley high speed, and this exerts a large reltive thrust on the rocket ( an equal and opposite reaction according to Newton's third law. rockets are used for fireworks, weaponry, ejection seats, launch vehicles for artificial satellites, human spaceflight and exploration of other planets. chemical rickets are the most common type of rocket and they typically create their exhaust by the combusion of rocket propellant. early rockets were very inaccurate. without any use of spinning or any gimballing of the thrust, they had a strong tendency to veer sharply off cource. at the beggining of the 20th century, there was a burst of scientific investigation into interplantary travel, largley driven by the inspiration of fiction by writers such as Jules verne and H.G. Wells. chemical rockets store a large amount of energy in an easy-released form, and can be very dangerous. however, carful design, testing, construction and use minimizes risks. it is beleived that in the 11th century that the Chinese were the first to use rockets in the military. during the war of 1812, an english man named William congreve worked to help to improve the range of the rocket. by: Sammy Johnson
Makayla Barricks
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