Rocket to propulsion to jet

     In the decade of 1960, Japan imported water rockets of toy made of Germany and the United States. In the middle of 1980 competitions of water rockets were realized in Scotland. The bottles of polyethylene tereftalato (PET) for gaseous drinks, which it is the material that is in use for making generally water rockets, was used by the first time in 1974 in the United States of America and his use increased rapidly as they were spreading between the consumers. Possibly, the first printed material brings over of the construction of water rockets with PET's bottles there appeared in the edition of August, 1983 of the American magazine Mother Earth News "

     At present, the construction and the launch of water rockets is realized of several ways in different parts of the world. The models of rockets are popular in the United States and schools, museums of sciences, etc.se organize activities of construction of water rockets; diverse models of water rockets are to the sale to arm. In Europe the models of rockets to arm have been more popular than the water rockets. Nevertheless, the above mentioned have a long tradition in several such countries as England, France and Scotland. In 2001, for example, England initiated a so called competition " Water closet Rocket Challenge " .En the whole world they are fond of the water rockets, which exchange information about original designs both of rockets and of launchers. Many people compete with others for the brands of height overcome with the same enthusiasm and intensity that those who enjoy the sports.

     In many countries of Asia, between them China, Korea, The Philippines, Indonesia, Sri Lanka, Viet Nam, Singapore and India, the water rockets are increasingly popular and the number of competitions goes in increase. In 2005 an international initiative was undertaken on water rockets destined to the young persons of the Asia and the Pacific Ocean, with the intention of promoting the education of the spatial sciences.