What is required for a rocket to life off into space?

Answer 1

it depends on what type of spacecraft trying to get into lunar orbit,on Apollo,they first went into a trans lunar injenction(TLI)from earth,once there near the moon,they turn round facing earth and burn fuel until there in lunar orbit

Answer 2

Most spacecraft currently require a rocket to accelerate themselves into orbit or beyond earth. Most of the rockets weight is fuel, which is burned up to achieve the required altitude and speed.

Answer 3

All types of rockets used so far to get into space have used chemical energy to generate thrust. There are two basic types of chemical energy rockets; liquid fuelled and solid fuel.

Solid fuel rockets are similar to fireworks skyrockets; a tube packed with an explosive or fast-burning power. The Space Shuttles SRB - Solid Rocket Boosters - are examples of solid-fuel rockets. Solid fuel rockets have one very big disadvantage; they are difficult to stop and then restart. So you use solid rockets when you plan to use them all up at one time. Solid rockets are fairly stable, and don't rely on extremely cold liquids.

Liquid fuel rockets generally use an oxidizer like liquid oxygen and a fuel like hydrogen, hydrazine, or red fuming nitric acid. Liquid fuel rockets like the Space Shuttle's main engines or the maneuvering engines can be started, stopped and restarted when desired, but the fuel is generally poisonous, or corrosive, or at extremely low temperatures, or all of these.

Other types of propulsion have been considered. One type of rocket, the ion jet propulsion, is actually in use for long range space probes. Think of it as the Electric Rocket; the engine creates ions of a heavy element like Mercury, and generates a strong electric field to throw the mercury atoms out the rear of the engine. So far, ion engines are very low powered - but they can operate for a VERY long time, unlike liquid fuel rockets that burn up most of their fuel in a few minutes. They are excellent for years-long space probe missions that don't need a LOT of power, but do need it for a long time.

Another proposed engine for spacecraft would be a "solar sail". The "Solar wind", a stream of charged particles that flow outward from the Sun, could be caught and used much like Earthly winds propel a sailboat in the sea.

Finally, one far-out way of launching spacecraft would be the Orion nuclear pulse engine. Imagine building a skyscraper on top of an enormous steel bowl. Connect the bowl to the skyscraper with titanic shock absorbers. Set off an atomic bomb in the bowl. The skyscraper would LEAP into the sky, and if you continued to set off atomic bombs right behind the bowl, would propel you and your skyscraper-sized spaceship into space. It has been tried, using chemical explosives in small scale tests, and the results have been astonishing.

Answer 4

It must have a speed of at least 7.9 km/sec to get into Earth orbit, and at least 11.2 km/sec to get away from Earth.

Answer 5

it has a big engine and it blows out fire to make it take of

Answer 6

The object's mass, and your distance from its center of gravity

when you try to escape from it.

Answer 7

A rocket for one, a couple of folks in astronaut clothing, a few hundred people that look like they work in a call center.

Answer 8

The "Escape Velocity".

Answer 9

gravity?