How does satellite move around earth?

Question

Hi! Just wanna know how satellite move around our earth. Is it use jet propeller or it randomly move around earth?

Answer 1

As far as I know most of them Orbit our planet, in the same way our Moon does.

Answer 2

Once a satellite is placed in its proper orbit, the velocity or speed that it is traveling will keep it up there for a very long time. It can also make minor adjustments to its orbit by firing thrusters or venting a gas. At times, a satellite will malfunction and its orbit will begin to decay and will eventually fall back to earth and hopefully burn up in the atmosphere or crash into the ocean.

Answer 3

a few things you need to know first.

1)  something that moves will always (ALWAYS) just keep moving, until something else causes it to change... like stop.

2)  the Earth is round (you possibly already knew this... probably, even)

3)  if you fire a cannonball off a mountain horizontally... the FASTER you shoot it, the farther downrange it will go.

4)  if you shoot that cannonball fast enough, eventually it will fall at the same rate that the Earth curves away from it... in other words, so long as air friction doesn't make it slow down, it will "fall" all the way around the world in orbit.

5)  no air friction above a 100miles or so.

see?  no propellers needed.  (you can keep the one on your hat.)

Answer 4

the curvature of space

Answer 5

No, it uses actually nothing to move around Earth. In space, you have almost zero friction slowing you down, so the only force, which has an effect on satellites is gravity. This gravity works pretty much like a rubber band on a ball you spin around, it pulls the satellite towards Earth all the time. That pull makes the satellite fly an ellipse around Earths center. All you need, is to give the satellite enough initial velocity to miss Earth all while Earth pulls it back - if you are not fast enough, the ellipse will lead into Earth, you crash. This initial velocity is produced by rockets - rockets are only machines build for creating velocity.

Low flying satellites experience still drag by the remaining atmosphere up there, that's why they require reboost maneuvers, where you burn a chemical rocket engine for a short burst, or, in case of the GOCE satellite, which will launch in some days, a low-thrust ion thruster, which is firing all the time.

Answer 6

A satellite is falling to the earth, but being really fast it falls always behind the horizon on and on.

High enough there is no air and no friction so the satellite can keep its initial speed and height.