학술논문
Slow Down or Speed up? Lowering Periapsis Versus Escaping from a Circular Orbit.
Document Type
Article
Author
Source
Subject
*IMPULSE (Physics)
*ARTIFICIAL satellites
*ORBITS of artificial satellites
*PLANETS
*VELOCITY
*
*
*
*
Language
ISSN
0031-921X
Abstract
The article examines the possible effects of a single coplanar impulse on a satellite in a circular orbit around an isolated spherical planet of mass M. Topics discussed include relating extrema of orbital speed and distance for a satellite to hit the planet, the periapsis distance of satellite's orbit rP to be less than or equal to the planet's radius R, and smallest velocity change being a positive specific impulse to accelerate the circular speed of the satellite to the local escape speed.