History of astrodynamics | Wikipedia audio article
Channel: wikipedia tts
Date: 2018-12-24

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Orbital_mechanics


00:00:59 1 History
00:02:48 2 Practical techniques
00:02:57 2.1 Rules of thumb
00:06:20 3 Laws of astrodynamics
00:08:17 3.1 Escape velocity
00:10:59 3.2 Formulae for free orbits
00:12:56 3.3 Circular orbits
00:16:02 3.4 Elliptical orbits
00:18:37 3.4.1 Orbital period
00:19:45 3.4.2 Velocity
00:20:58 3.4.3 Energy
00:22:02 3.5 Parabolic orbits
00:24:01 3.6 Hyperbolic orbits
00:26:42 3.6.1 Energy
00:27:58 3.6.2 Hyperbolic excess velocity
00:29:20 4 Calculating trajectories
00:29:29 4.1 Kepler's equation
00:38:21 4.2 Conic orbits
00:38:45 4.3 The patched conic approximation
00:41:37 4.4 The universal variable formulation
00:42:10 4.5 Perturbations
00:45:14 5 Orbital maneuver
00:45:39 5.1 Orbital transfer
00:47:36 5.2 Gravity assist and the Oberth effect
00:48:38 5.3 Interplanetary Transport Network and fuzzy orbits



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SUMMARY
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Orbital mechanics or astrodynamics is the application of ballistics and celestial mechanics to the practical problems concerning the motion of rockets and other spacecraft.  The motion of these objects is usually calculated from Newton's laws of motion and Newton's law  of universal gravitation.  It is a core discipline within space mission design and control.  Celestial mechanics treats more broadly the orbital dynamics of systems under the influence of gravity, including both spacecraft and natural astronomical bodies such as star systems, planets, moons and comets.  Orbital mechanics focuses on spacecraft trajectories, including orbital maneuvers, orbit plane changes, and interplanetary transfers, and is used by mission planners to predict the results of propulsive maneuvers.  General relativity is a more exact theory than Newton's laws for calculating orbits, and is sometimes necessary for greater accuracy or in high-gravity situations (such as orbits close to the Sun).