Rockets
The first rocket device was planned around
100B.C by a Greek named ‘’hero,’’ of Alexandria. This device was called an
aeolipile.
It consisted
of a sphere mounted on a water kettle. The fire beneath the kettle turned into
steam. This then travelled through the pipes to the sphere and through two
L-shapes pipes that cause the sphere to rotate.
When rockets
as we know them were first invented is not known. But the first true rockets
were used, was the year 1232. It is believed that the Chinese had a basic
rocket like this before. At this time the Chinese were at war with the Mongols.
During one of these battles the battle of kai-keng the Chinese managed to
defend themselves using arrows “arrows of flying fire” these fire arrows were a
simple of a solid-propellant rocket. A rocket, capped at one end. The other end
was left open and the tube was attached to a stick. When it was done the rapid
burning of the power produced fire smoke and gas. That escaped, the stick acted
as a guiding system that kept the rocket heading in the right direction so
their effects on the Mongols was probably huge!
Today’s
rockets are remarkable collections they are natural outgrowths of thousands of years
of experiments and research on rockets. And early NASA missions used rockets
build by the military theses rockets are used to launch satellites. I think
it’s significant because it’s a great way to into space and will be a huge attachment
to the world today.
