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Unformatted text preview: Syllabus This course is ENAE 404, Space Flight Dy namics . It is an introduction to orbit and at titude dynamics (astrodynamics) and a little attitude dynamics. Topics we will cover: Physics of orbiting satellites: Keplers and Newtons laws, conservation laws, conic sec tions. Coordinate systems and transformations; time Orbital elements, Keplers equation and two body propagation Attitude dynamics Orbital maneuvering Perturbations Applications (through semester) More to say about the mechanics of the class later. L. Healy ENAE404 Spring 2007 Lecture 1 (Jan. 25) 1 Vector and planetary notation A boldface symbol or one with an arrow over it denotes a vector, e.g. x . The corresponding letter with no arrow over usually denotes the magnitude, e.g. x =  x  . Exception: n (mean motion) is not the magnitude of the node vector n . The letter with a hat denotes the unit vec tor, i.e., one that points in the same direc tion and has length one, e.g. x = x /  x  . Symbols for astronomical bodies: earth, sun, $ moon, mars. Sometimes notation varies, and I will point that out. Usually I will follow the books notation. L. Healy ENAE404 Spring 2007 Lecture 1 (Jan. 25) 2 History of astrodynamics Celestial Mechanics or Dynamical Astron omy : the study of the orbital motion of natural bodies. Astrodynamics or Space flight dynamics/mechanic the study of the orbital motion of artificial bodies (satellites). The physics and mathematics are almost ex actly the same, except some things like n body motion (of more concern to celestial mechan ics) and orbit transfers (of more concern to astrodynamics). The history of astrodynamics thus dates from the 1500s, as celestial me chanics. In the spaceflight era, most spacecraft stay in earth orbit. For the most part, the transla tion from, say, sunorbiting planets to earth orbiting artificial satellites is straightforward....
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This document was uploaded on 04/27/2011.
 Spring '11

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