Analytical study of spacecraft impact dispersion during reentry

Physics

Scientific paper

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Atmospheric Entry, Reentry Physics, Satellite Drag, Spacecraft Reentry, Approximation, Ballistic Trajectories, Center Of Mass, Equations Of Motion, Impact Damage

Scientific paper

The paper obtains analytical estimates of spacecraft impact dispersion due to the divergence of atmospheric parameters from calculated ones, the scatter of the frontal drag coefficient, oscillations of the spacecraft with respect to the center of mass, and the displacement of this center in relation to the longitudinal axis during uncontrolled reentry. The method used is based on the approximate analytical solution of a system of equations conjugated with equations of motion in variations and the estimation of integrals specifying range deviations. The method is applied to controlled reentry with a constant angle of trajectory inclination.

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