Orbit are the defining features of shape, altitude and angle that makes the Earth’s equator. They are chosen to better serve the mission satellite. Most are circular but there are some satellites have elliptical orbits. The altitude of the satellite orbit determine the time required to execute a movement of revolution around the planet Earth and the proportion in which the satellite is visible at the time.
The satellites pass over different levels depending on the angle of latitude Earth orbit their taking as a reference the equator. In addition, most reverse aclor moves counterclockwise on the North Pole. Satellites have to bear the effects of radiation and always hits micro meteorites, especially during missions duration. Atmosphere Earth blocks most cosmic rays affecting computer microprocessors on sol. Any satellite also must protect the computers. Radiations space is doing some materials become brittle, and thus some parts of the satellite can spoil more easily after long exposure. Solar panels produce increasingly less energy because of radiation effects and the impact of meteorites.
Since it orbits the Earth, the satellite encounters with intense heat areas and areas with a low temperature because it alternates moments when facing the Sun and those who hide from it. The electronic equipment on the satellite also creates heat that can cause damage. Earth radiation heat can be transported. Instead, in space where there is no air to pass over the satellite and transfer heat by convection and as there is no other body which could give it to her warmth, he must control his heat.
The orientation of a satellite is the direction given to each component. It always keeps its solar panels toward sun. In addition, satellite antennas and sensors are always oriented toward Earth or other objects. E. g, meteorological and communications satellites and antennas have Earth-facing rooms, while space telescopes are targeted for astronomical objects that scientists will study. One them the methods used for guidance is the use of small jet engines, rotating wheels to satellite and magnets interacting Earth’s magnetic field that helps correct orientation of the satellite . Jet engines can make big changes in a short time, but not the best solution when returning stability is critical.
Also they require fuel, and thus the life of a satellite depends limit fuel engines.
Since launching satellites must resist and must operate in the harsh environment of space, its unique technology and durable. We require has to carry power source because they can not get on Terra. Satellite must remain positioned in the same direction or guidance to fulfill their mission. Temperature must be constant between Patria and the sun beats in cold. We which must withstand radiation or collisions with satellites micrometeorite. Most people have mounted computers that help conduct operations and the fulfillment of the mission.
The first level consists of the rocket motor, which provides a huge amount of energy. This level rise from the launch site in the first part of the entire launch vehicle flight, the entire amount of fuel, the rocket body and the engines are increasingly using fuel satellite. After first level and vehicle separate from the rest falls on Terra. Now kicks in the second level, which provides the energy required to lift the satellite orbit. In this level and eventually detach from the rest of the track phone.
Continuing the launch is different depending on the mission satellite. E.g whether it should follow a geostationary orbit, which can be reached only at a distance of about 35 000 km from Earth, a third level of energy needed to provide rocket finish. After place the satellite into its orbit it, another another jet engine kicks in and provides satellite orbit circular. Each jet engine combustion occurs at a precise moment and lasts as long as it ranks right satellite into space .
In 1990 the United States began to launch several satellites of the aircraft they flew at altitudes mari.Aceata method still requires the power of the jet engine launch vehicle because it can not overcome friction module with the dense atmosphere at low altitudes using less combustibil.Oricum, racquet size is limited by the size and strength of the aircraft so small satellites can be launched only.
The other method is to launch satellites from the mother ship (space-shuttle) .It can carry large satellites, and it is already in orbit after its launch, the astronauts can check if the satellite has “survived” the rigors lansarii.Ea also can bring to repair satellites on Earth.