Conditions for an orbiting satellite to escape
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For it to escape it needs to have positive energy.
Its energy consists of gravitational potential energy (negative, zero at infinite distance) and kinetic energy (positive or zero).
Its energy consists of gravitational potential energy (negative, zero at infinite distance) and kinetic energy (positive or zero).
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hi.
In order to escape permanently it needs to reach or exceed the escape velocity. Interestingly, it is simply the orbital speed (if circular orbit) times the square root of 2.
For low earth orbits the orbital speed is around 28.000 km/h and the escape velocity around 40.000 km/h. So you should apply about 12.000 km/h of delta v if done on a single impulse.
In order to escape permanently it needs to reach or exceed the escape velocity. Interestingly, it is simply the orbital speed (if circular orbit) times the square root of 2.
For low earth orbits the orbital speed is around 28.000 km/h and the escape velocity around 40.000 km/h. So you should apply about 12.000 km/h of delta v if done on a single impulse.
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