AER 721

Astrodynamics: two-body problem in three dimensions, orbital elements, orbit types (circular, elliptical, hyperbolic), reference frames and time-keeping, orbit determination, position and velocity, introduction to three-body problem. Earth Orbits: orbital perturbations (earth, environment, third-body effects), orbit lifetime, ballistic trajectories, types and uses of orbits (low, mid, high, sun-synchronous, geosynchronous). Orbit Control: basic orbital maneuvering, delta-V considerations, interplanetary transfer and rendezvous, method of patched conics, orbital swing-by, orbit station-keeping, Hill's geometry, eclipse, sun incidence, earth viewing and coverage geometry, calculation of contact time and duration, constellations. Launch Vehicle Considerations: various rocket configurations, staging, ascent to orbit.