Satellites in aerospace engineering

Telecommunication Satellites. With the advent of mobile communication, the world has come much closer and has become accessible within reach. Across the Americas, Europe and through-out much of the world, digital phones have opened up a new generation of communication.

This has changed the way of how we keep in touch and mobile phones continue to enhance our lives. Today, we not only use mobile technology just to communicate, but it is also being used to transfer data, surf the net, download and play music and various other content applications.

On the hand, it should be noted, that there are several areas in this world, where communication facilities are totally absent. A disaster area may be one such instance where communication is an imperative necessity.
In today’s modern world, we use satellite phone to communicate.

Aerospace engineering defines a satellite is an object which revolves around another object. For example, the Moon is a satellite of the Earth, and the Earth is one of the Sun.
The phenomenon interested mankind to investigate more on this idea and experiment on man-made satellite en-circling the Earth. It was thought that if such a satellite was put in the space, communication could be set up from one part of the world to the other.
A communication satellite orbits around the earth and in effect is an artificial satellite, stationed in space for the purpose of telecommunication.
These satellites use the geosynchronous orbits, Molniya orbits or low polar Earth orbits.

Looking at the first law of Newton, it was understood that in principle it should be possible to put up a man-made satellite in the sky, which would orbit the Earth. As has been seen, this satellite would need a sideways velocity, like the earth, so that it does not fall back on Earth. If such a satellite is put up in the sky at a distance of 4,000 miles, it will have an orbital period of approximately 90 minutes.
To miss falling on to the Earth, this satellite would have to have a sideways velocity of 17,000 miles per hour.

When you, look back to the dawn of space travel, the landing on the Moon by Apollo in 1969, seemed to be a giant step forward in space travel. Since that time, weather forecasting has technologically improved with geostationary meteorological satellites, sending the pictures that we see on television everyday.

The television broadcast has taken a leap with these satellites, where live telecasts are being beamed from one side of the world to the other. The satellite aided voice communication has had a remarkable effect in getting help in a remote area, where other communication is not available, delivering the highest speech quality with reliability.

Aerospace engineering has put the world within your easy reach, with globalization, factories and offices have come up in the remote part of the world. These locations are often in those parts where modern communication network does not exist. Despite this, business needs to go on and communication is vital. Satellite communication has virtually brought these places quite close, bringing the communication network virtually to any location around the world.
This has been done without the need of an infrastructure of wireless network, fiber optics, or even copper cabling.