What is Starlink? Elon Musk's Crazy Idea
Starlink or Starlink satellites; A project that will take the internet event of Elon Musk, the founder of SpaceX, to another dimension.
Starlink or Starlink satellites; A project that will take the internet event of Elon Musk, the founder of SpaceX, to another dimension. Nowadays, when you raise your head to the sky, there are some things to know about Starlink satellites that you can see even with the naked eye.
First of all, what exactly is Starlink?
StarLink; The name of SpaceX's project, which aims to offer high-quality broadband internet. On the 24th of May 2019, the first 60 satellites were launched into space with the Falcon 9 rocket.
This project, which will consist of 42 thousand satellites in total, was first mentioned by Elon Musk in 2015. After designing 2 different satellite prototypes called Tintin a and Tintin b as a result of long efforts, the project was in deep silence. Until November 2018, the approval of fcc to get 7500 satellites into orbit was obtained.
60 satellites were sent as the first action after approval. these satellites test satellites and their purpose to test communication systems around the world and autonomous systems called krypton thrusters. this autonomous system is intended to prevent any debris or orbit from occurring between satellites.
Moreover, since 95% of the satellites are dropped due to any problems, they are not designed to burn and disappear as soon as they enter the atmosphere. each satellite has 5 laser systems. basically they work with the logic in fibre optics and take their positions instantly. this is also important for preventing collision etc. This is the autonomous system we call krypton thrusters.
The cost of fibre optic cables to be laid by America in the transition from 4g to 5g in the next 7 years will be $ 150 billion, while Starlink's total cost to SpaceX is $ 10 billion.
What will Starlink do?
Electromagnetic waves (light and radio waves) travel at 300 thousand km / h in the void, but this changes with the start of the wave starting on a fibre optic cable or a copper transmission line. The electromagnetic wave slows down in a more dense carrier by the velocity factor. For an average copper cable, this speed is around 0.69.
If you want to send data from London to new york with ac2 fibre ( New York - Cornwall), the data travel time for this 12,800 km line is theoretically 63 ms. As soon as the delays such as fibre-electricity transformations and switching of packages are added, the shortest time to reach is 76 ms. The cost of Hibernia express, which is laid to reduce this time by 20 ms, to reduce 56'ms in total, is about 300 million dollars.
Let's talk about Starlink. For now, we have two options for orbit: geostationary and Leo geostationary means satellites that synchronize with the world and look at the same point in the projection, satellites such as Hotbird are always in this orbit, and the orbital altitude of these satellites is 36,000 km. The time required for a data trip to the satellite and back on the ground is 240 ms, while Starlink is only 550 km above the ground (low earth orbit), and the time required for a trip is only 3.6 ms.
According to the patent documents, each Starlink satellite contains 5 directable laser transceivers. After a data packet coming out of the ground reaches any of the satellites, it will be switched to the other satellite from the shortest path in space with these laser transceivers. Briefly, the data packet that sets off from any point in the world will travel almost in a carrier in the space (the velocity of the em wave in the air is almost the same as in the space) instead of the fibre cable. What does this mean, theoretically a trip between London and new york with the Starlink system can be completed around 42 ms.
Time is everything for giant exchanges where millions of dollars have changed hands in milliseconds. The speed of light is constant in space. We don't know a way to send data faster than this in the universe right now. We probably won't know for a very long time. Velocity factor is not an overridden physics rule either. We think the 300 million dollars spent on Hibernia express means the importance of every millisecond to earn only 20ms. This difference increases even more as the distance between exchanges like London Singapore increases.
Starlink will be up to 20 ms faster than other data transfer methods unless one exits for the whole world and the financial market and installs a similar system. retaining such a power, it will attract all finance and critical data traffic over itself in a short time. It is difficult to predict a different monopoly and how it will bring results.
Will space be turned into a dump with Starlink satellites?
For some reason, there is an impression that Elon Musk sends satellite to orbit without asking anyone, however, it is not possible to operate communication satellite without obtaining permission from fcc (federal communications commission). As you can imagine, the permissions of Starlink are also complete. They even recently asked for permission to run satellites in a lower orbit.
Neither does it turn space into a dump; because the satellites whose mission is finished will be lowered by using the engines on them, and those who are broken will be destroyed by burning into the atmosphere within 4-5 years because they are in low orbit, their designs have been designed accordingly; 95% of the 60 satellites sent in May 2019 and 100% of the 400 satellites sent since November can be destroyed by burning in the atmosphere.
The most serious problem - especially for amateur and professional astronomers - is the visual pollution it will cause. In the Starlink 2 mission, a special paint was tried in one of the satellites, and from Starlink 9, other measures will be taken in this regard, and their visibility will be reduced.