Can Satellites Orbit Within Earth's Atmosphere and How Close Can They Get?

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In summary, the conversation discusses the possibility of achieving gravitational orbit inside Earth's atmosphere and how close a satellite can be to the ground. It also touches on the idea of the Death Star being covered in solar panels and the practicality of orbiting between the Mesosphere and Exosphere without using rockets. Friction and aerodynamics are potential challenges in achieving this type of orbit.
  • #1
Mateo
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Hi, was just wondering if gravitational orbit be achieved inside the Earth's atmosphere. Or how close a satellite can be to the ground?

Additionally, would the Death Star have been completely covered in solar panels?
 
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  • #2
Which part of the atmosphere are you referring to? And no, if I'm correct, the Death Star had a fusion reactor.
 
  • #3
Orbit can be falling when tangential velocity can path beyond horizon when vertical is less than escape velocity. a sufficiently såeedy satellite could orbit the Earth within the atmosphere, but friction would be a huge practical problem.
 
  • #4
I suppose I would like to know if something can orbit between the Mesosphere and the Exosphere without using rockets.
Didn't think of friction- that is problematic.
 
  • #5
It is possible, but it's unlikely
 
  • #6
Mateo said:
I suppose I would like to know if something can orbit between the Mesosphere and the Exosphere without using rockets.
Didn't think of friction- that is problematic.
Aerodynamics is too.
 

1. What is an inner-atmospheric orbit?

An inner-atmospheric orbit is a type of orbit that is within the Earth's atmosphere, typically between 100 and 1,200 kilometers in altitude. This type of orbit is often used for satellites and spacecraft that need to remain in close proximity to Earth for communication, observation, or other purposes.

2. How is an inner-atmospheric orbit different from other types of orbits?

An inner-atmospheric orbit is different from other types of orbits because it is within the Earth's atmosphere, whereas other types of orbits, such as geostationary or lunar orbits, are outside of the atmosphere. This means that objects in an inner-atmospheric orbit experience more atmospheric drag and must constantly adjust their trajectory to maintain their orbit.

3. What are some advantages of using an inner-atmospheric orbit?

One advantage of using an inner-atmospheric orbit is that it allows for closer proximity to Earth, which can be beneficial for communication, observation, and data collection. It also requires less energy to achieve and maintain this type of orbit compared to higher orbits, making it more cost-effective.

4. How do scientists and engineers calculate and maintain an inner-atmospheric orbit?

Calculating and maintaining an inner-atmospheric orbit requires precise calculations and continuous adjustments to the spacecraft's trajectory. This is done using a combination of mathematical models, data from sensors on the spacecraft, and ground-based tracking systems. Small thrusters on the spacecraft are also used to make minor course corrections as needed.

5. Is there a limit to how low an inner-atmospheric orbit can be?

Yes, there is a limit to how low an inner-atmospheric orbit can be. As the spacecraft gets closer to Earth, the atmospheric drag increases, making it more difficult to maintain the orbit. Eventually, the spacecraft will experience so much drag that it will deorbit and burn up in the Earth's atmosphere. Therefore, there is a minimum altitude for an inner-atmospheric orbit, typically around 100 kilometers, to avoid this fate.

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