What is a satellite?

Question

I mean how does it work? how does a satellite have equilibrium when it's launched into outerspace?Can you introduce me some references such as books or websites or people who help me to do a scientific research on "equilibrium of a satellite" as my university project?

Answer 1

satellite is something that goes around and around a larger something, like the earth or another planet. Some satellites are natural, like the moon, which is a natural satellite of the earth. Other satellites are made by scientists and technologists to go around the earth and do certain jobs. Satellites are usually owned by companies or countries. The companies that own satellites usually want to make money by renting out part of the satellite to other companies. The countries or government agencies that own satellites want to make people's lives better by improving the communication networks in their countries.Different kinds of satellites are used in different situations, for different purposes. To talk about the sizes of satellites, we'll use two examples: the Boeing 601, which is used mostly for direct broadcast TV and business communication networks, and the Boeing 702, which is used mostly for video distribution, satellite telephone and Internet services, and digital radio.

Answer 2

A satellite or any planet for that matter including our own earth stays in its orbit because of two equal and opposing forces. The Centrifugal force and the Centripetal force. The Centripetal force is the force of attraction between two masses like Earth and our Sun or the Earth and the Satellite (remember, if it was not orbiting and comes to a stand still for some reason, it will drop from that height like a stone!). The Centrifugal force is what tries to push the object away (if you tie a stone to a string and whirl it around while holding the string, it goes around you in a circle, suppose the string breaks, the stone flies off at a tangent). Think of the centripetal force as the string. The satellite is injected into the orbit at a high velocity so that it orbits in a stable orbit.

This is physics and so if you see any good physics text book, you will get a lot of information.

Answer 3

Imagine a powerful gun on a mountain top. When you fire a shell it eventually falls back to earth.

If you keep adding more gunpowder to the charge, the shell will travel further and further before coming back to earth.

This is because, the curvature of the earth is falling away at the same rate as the curvature of the projectile until its momentum is slowed by air resistance and friction and it comes down.

In theory, a point will be reached where the projectile is flying fast enough that the curvature of the earth is the same as the curvature of the falling shell. It will not land. The friction and air resistance however, will not allow this.

When an object is in orbit (as a satellite), it has been given the necessary momentum to maintain its height and position outside of the atmosphere (no air resistance), in relation to the earth's curvature, until the orbit decays and ... down it comes.

Answer 4

Generally a satellite is any object that orbits another object. There are two types, natural satellites and artificial satellites.What you are talking about obviously is the artificial satellite which is operated by humans .Click the link to know more on artificial satellietes.

http://en.wikipedia.org/wiki/Satellite

Answer 5

It's a delicate balancing act between gravity and escape velocity. When in orbit around earth you are actually falling towards it. If your speed is too slow you will crash. If your speed is too fast you will be flung out to space and escape the gravitational hold. you have to hit the correct speed for that orbit so you neither fly away or cash. different size orbits have different speed requirements. For a beginner an excellent book still is Isaak Asimov "The Universe: from Flat Earth to Quasar"

Answer 6

satellite is a moving station in the space operated by scientists

Answer 7

It's also a natural body that revolves around another body that isn't the sun.
Try 'en.wikipedia.org'

Answer 8

try this web site it might help one way or the other