2. Equations of motion
During atmospheric re-entry, the physical quantities of interest are related to the position and velocity of the vehicle relative to the Earth and the atmosphere. This leads us to write the equations of motion in spherical coordinates in the rotating geocentric frame of reference.
2.1 Rotating geocentric marker
2.1.1 Galilean frame of reference
The equations of motion are given by Newton's second law in a galilean reference frame, also called inertial or absolute. The reference frame considered...
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Equations of motion
Orbital phase
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