Page 49 - @ccess 2 Reader´s Book
P. 49
How Does a Rocket Engine Work? thrust
(n.): empuje
Like many other engines, a rocket produces thrust
by burning fuel. Most rocket engines turn the fuel into
hot gas.
Pushing the gas out of the back of the engine makes the
rocket move forward.
A rocket is different from a jet engine. A jet engine requires
oxygen from the air to work. A rocket engine carries
everything it needs. That is why a rocket engine works in
space, where there is no air.
There are two main types of rocket engines. Some rockets
use liquid fuel. The main engines on the space shuttle
orbiter use liquid fuel. The Russian Soyuz uses liquid fuels.
Other rockets use solid fuels.
On the side of the space shuttle are two white solid rocket
boosters. They use solid fuels. Fireworks and model rockets
also fly using solid fuels.
48 Reader's Book
