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Topic: Orbital mechanics

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	Basic of Space Flight: Orbital Mechanics
		The root of orbital mechanics can be traced back to the 17th century when mathematician Isaac Newton (1642-1727) put forward his laws of motion and formulated his law of universal gravitation.
		Inclination is the angular distance between a satellite's orbital plane and the equator of its primary (or the ecliptic plane in the case of heliocentric, or sun centered, orbits).
		Orbital transfer becomes more complicated when the object is to rendezvous with or intercept another object in space: both the interceptor and the target must arrive at the rendezvous point at the same time.
	www.braeunig.us /space/orbmech.htm (6625 words)

	Orbital resonance - Wikipedia, the free encyclopedia
		Orbital Resonance is also the title of a science fiction novel by John Barnes.
		In celestial mechanics, an orbital resonance occurs when two orbiting bodies exert a regular, periodic gravitational influence on each other, usually due to their orbital periods being related by a ratio of two small integers.
		The special case of 1:1 resonance (between bodies with similar orbital radii) causes large solar system bodies to "clear out" the region around their orbits by ejecting nearly everything else around them; this effect is used in the current definition of a planet.
	en.wikipedia.org /wiki/Orbital_resonance (1100 words)

	Celestial mechanics - Wikipedia, the free encyclopedia
		Celestial mechanics is a division of astronomy dealing with the motions and gravitational effects of celestial objects.
		The field applies principles of physics, historically Newtonian mechanics, to astronomical objects such as stars and planets to produce ephemeris data.
		Using Lagrangian mechanics it is possible to develop a single polar coordinate equation that can be used to describe any orbit, even those that are parabolic and hyperbolic.
	en.wikipedia.org /wiki/Celestial_mechanics (1176 words)

	Planetary orbit - Facts, Information, and Encyclopedia Reference article
		The gravity of the orbiting object raises tidal bulges in the primary, and since below the synchronous orbit the orbiting object is moving faster than the body's surface the bulges lag a short angle behind it.
		This mechanism is extremely weak for most stellar objects, only becoming significant in cases where there is a combination of extreme mass and extreme acceleration, such as with fl holes or neutron stars that are orbiting each other closely.
		When atomic structure was first probed experimentally early in the twentieth century, an early picture of the atom portrayed it as a miniature solar system bound by the coulomb force rather than by gravity.
	www.startsurfing.com /encyclopedia/o/r/b/Orbit.html (2537 words)

	Chapter 5 -- Orbital Mechanics (Site not responding. Last check: 2007-11-05)
		With the advent of the space age in 1957 a new practical subset of Celestial Mechanics was born, Orbital Mechanics.
		Orbital mechanics is the study of the motion of human made objects as they travel around a principal body, in the majority of flights the Earth.
		In orbital mechanics, the center of the central attracting body is always at one focus and the other focus is vacant.
	www.space.edu /projects/book/chapter5.html (5633 words)

	[5.0] Gravity & Orbital Mechanics
		The orbital radius is measured in meters from the center, not the surface, of the Earth.
		The orbital "slots" where a satellite may be placed in geostationary orbit are regulated and are traded as a commercial commodity by satellite companies.
		Orbital planning software calculates one set of conics to define the spacecraft's trajectory at launch, calculates a second set of conics for the spacecraft's trajectory at its target, and tries to find one conic in each set that match up.
	www.vectorsite.net /tpecp_05.html (5498 words)

	Orbital - mp3 download, back to mine, orbital 2
		Orbital full albums in mp3 satan spawn re recorded for the movie spawn with metallicas kirk hammett chime radio edit.
		Orbital chime 7 single version, you lot the girl with sun in her head free mp3 downloads.
		Orbital satan spawn re recorded for the movie spawn with metallicas kirk hammett, deeper kein trink wasser.
	www.freewebs.com /openmertod/Orbital-mp3.html (3164 words)

	Orbital Mechanics II
		Orbital Mechanics II Orbital Mechanics II The Physics Hypertextbook™
		Circular orbits arise whenever the gravitational force on a satellite equals the centripetal force needed to move it with uniform circular motion.
		For the same reason that mechanical energy is conserved angular momentum is also conserved as the satellite moves from point A to point B. The speed at point B can be determined quite simply from this principle.
	hypertextbook.com /physics/mechanics/orbital-mechanics-2 (990 words)

	Fundamentals of Orbital Mechanics
		This is why the orbital periods of the outer planets are so much larger than the orbital periods of the inner planets.
		Similarly, the orbital velocity of the larger orbit is:
		The orbital radius of the Earth (r1) is 1 AU; the orbital radius of Mars (r2) is 1.524 AU.
	www.exodusproject.com /Orbits.htm (3602 words)

	[6.0] Advanced Concepts In Orbital Mechanics
		The constant can be simplified by specifying the orbital radius in terms of the Earth's orbit, or "astronomical unit (AU)", the orbital period in terms the Earth's orbital period, or years, and the system mass in terms of multiples of the mass of the Sun.
		As the discussion of software for orbital mechanics shows, the gravitational interactions of all the bodies in the solar system are impossible to calculate with perfect precision, and approximate methods are required in practice.
		At the south tuft, since the gases in the Smoke Ring were moving at their natural orbital speed but the tuft of the tree was moving more slowly, the tuft was in a perpetual howling wind blowing from behind the Tree's direction of motion.
	www.vectorsite.net /tpecp_06.html (5060 words)

	Amazon.de: Orbital Mechanics:: English Books: Conway Prussing,Bruce A. Conway,John E. Prussing (Site not responding. Last check: 2007-11-05)
		In the planning of any space mission, whether manned or unmanned, one of the most important problems to solve is the orbital mechanics of the spaceflight-how to get the spacecraft from here to there.
		The subject of orbital mechanics is developed starting from the first principles of Newton's laws of motion and the law of gravitation.
		The subject of orbital mechanics is developed starting from first principles, using Newton's laws of motion and the law of gravitation to prove Kepler's empirical laws of planetary motion.
	www.amazon.de /Orbital-Mechanics-Conway-Prussing/dp/0195078349 (539 words)

	Orbital Mechanics I
		The orbital speed of the planets decreases with distance from the sun [magnify].
		The orbital speed of the stars remains roughly constant with distance from the center of the Milky Way [magnify].
		Dwarf galaxies, star clusters, and gas clouds beyond the edge of the visible galaxy have nearly the same orbital speed as the stars within visible galaxy.There is evidence that rotational speeds remain roughly constant at 220 km/s out to distances of 300,000 light years or six times the radius of the Milky Way.
	hypertextbook.com /physics/mechanics/orbital-mechanics-1 (3131 words)

	Orbital Mechanics: From Earth to Mars
		A spacecraft traveling between the planets is said to follow a transfer orbit, which is itself an ellipse with the sun at one focus.
		The orbital transfer used by the Mars Odyssey spacecraft is shown in Figure 12.
		As the spacecraft's trajectory is bent by the planet's gravity, the command sequence aboard the spacecraft places the spacecraft in the correct attitude, and fires its engine(s) at the proper moment and for the proper duration.
	math-ed.com /Resources/GIS/Geometry_In_Space/part1.htm (933 words)

	Aerospace Engineering and Engineering Mechanics
		The areas of study in aerospace engineering are aerothermodynamics and fluid mechanics; solids, structures, and materials; structural dynamics; guidance and control; and orbital mechanics.
		This area involves study and research in mechanics of composite materials, fracture mechanics, micromechanics of materials, constitutive equations, structural analysis, and structural stability.
		This area involves study and research in the applications of celestial mechanics, analytical dynamics, geophysics, numerical analysis, optimization theory, estimation theory, and computer technology to model the dynamic behavior of natural and artificial bodies in the solar system.
	www.ae.utexas.edu /aerospaceGrad/gradProspect.html (3379 words)

	Launchspace Training
		The two body orbital mechanics problem, first approximation to all exploration orbits or trajectories, is covered in detail.
		In addition, the mechanisms relationship and interface with other vehicle systems will be explored, as a mechanism usually becomes an important part of the vehicles structural, thermal, contamination, survivability, and pointing subsystems.
		The course includes design and analysis examples to demonstrate the principles involved in understanding how mechanisms should work, and how design margins should be evaluated during the evolution of a program.
	www.launchspace.com (1070 words)

	SPACE ENVIRONMENT
		A set of orbital parameters or elements is used to describe the size and shape of a satellite's orbit, the orientation of the
		Inclination equal to 0 or 180; the satellite's orbital plane and the equatorial plane of the Earth are the
		orbital period of the satellite is the same as the period of the Earth's rotation around its axis (1 day).
	www.fas.org /spp/military/docops/army/ref_text/chap5im.htm (11175 words)

	Orbital Mechanics with Mathcad 11
		Mansfield's personal webpage at http://home.att.net/~astroger/ describes just a few of the many Mathcad worksheets he has constructed to solve problems in the mechanics of Earth orbital, escape, flyby, and interplanetary trajectories.
		Details of his new book in orbital mechanics can be found at http://home.att.net/~astrotopics/.
		The orbital segments of typical near Earth and deep space launch profiles and how to calculate nominal elements for them.
	home.att.net /~astrocourse (669 words)

	Orbital mechanics - NewMars
		Finding the Orbital plane –Useful linear algebra for considering the three dimensional nature of the problem.
		Orbital Intersections –Useful geometry for finding where two orbits intersect each other.
		Orbital mechanics First post: Mon Mar 15, 2004 12:04 pm, Last Post: Sun Jul 10, 2005 2:29 pm
	www.newmars.com /wiki/index.php/Orbital_mechanics (212 words)

	Amazon.com: Orbital Mechanics, Second Edition (Aiaa Education Series): Books: Vladimir A. Chobotov (Site not responding. Last check: 2007-11-05)
		Designed to be used as a graduate student textbook and a ready reference for the busy professional, this second edition of Orbital Mechanics is structured so that you can easily look up the things you need to know.
		The well-organized chapters cover every basic aspect of orbital mechanics, from celestial relationships to the problems of space debris.
		The book is clearly written in language familiar to aerospace professionals and senior-level graduate students, with all of the equations, diagrams, and graphs you would like to have close at hand.
	www.amazon.com /Orbital-Mechanics-Second-Aiaa-Education/dp/1563471795 (963 words)

	University Catalog 2005 \| University of Colorado at Boulder
		Presents the fundamentals of orbital mechanics, 3D rigid body dynamics, and satellite attitude dynamics and controls.
		Includes celestial mechanics, space navigation, and orbit determination; trajectory design and mission analysis trajectory requirements; and orbital transfer and rendezvous.
		Topics include perturbations of orbital motion; classical orbit determination from angles-only observation; modern orbit determination using range and range-rate data; orbit transfer using impulses or continuous thrust; and others.
	www.colorado.edu /catalog/catalog05-06/courses.html?s=5-1-3 (269 words)

	Fundamentals of Orbital Mechanics
		This is why the orbital periods of the outer planets are so much larger than the orbital periods of the inner planets.
		Similarly, the orbital velocity of the larger orbit is:
		The orbital radius of the Earth (r1) is 1 AU; the orbital radius of Mars (r2) is 1.524 AU.
	www.projectrho.com /rocket/Orbits.htm (3602 words)

	Orbital Mechanics (Site not responding. Last check: 2007-11-05)
		Orbits can range in shape and velocity and can be derived by orbital mechanics.
		All of the Landsat satellites are in a sun synchronous near polar orbit with an altitude of 800 km and an inclination of 98 degrees.
		The geosynchronous orbits is a special case of orbital mechnics.
	www.tsgc.utexas.edu /stars/rsorbits.html (412 words)

	Howstuffworks "How do satellites orbit the earth?"
		They usually cost millions or billions of dollars, which means none of us will ever own one personally.
		Orbital mechanics can also be mysterious because there is no easy way for us to experience orbital mechanics personally.
		However, with a little imagination, you can understand the basic idea behind orbital mechanics very easily.
	www.howstuffworks.com /question378.htm (501 words)

	The Infography about Orbital Mechanics
		The following sources are recommended by a professor whose research specialty is orbital mechanics.
		S.W. McCuskey, "Introduction to Celestial Mechanics," Addison-Wesley, 1963.
		J.E. Prussing and B.A. Conway, "Orbital Mechanics," Oxford, 1993.
	www.infography.com /content/803403172084.html (209 words)

	Artemis Project: The Lagrange Points
		L1, L2, and L3 are saddle points: stable in the theta direction but unstable in the r direction.
		Objects located at these points would need to use fuel to maintain their orbital position.
		An object placed at these points, 60 degrees ahead of and behind the moon at the radius of its orbit, will remain at the same point with respect to the moon.
	www.asi.org /adb/m/03/12/lagrange-points.html (384 words)

	Orbital Mechanics with Fortran (Site not responding. Last check: 2007-11-05)
		Orbital Mechanics with Fortran is a comprehensive collection of Fortran programs, subroutines and functions that can be used to solve a variety of practical problems in orbital mechanics, mission design and trajectory optimization.
		The Orbital Mechanics with Fortran software is based on 30 years of aerospace mission analysis experience and consists of both classic and state-of-the-art astrodynamic algorithms.
		The major computational areas of this library include coordinate calculations, ephemeris routines, numerical methods and utility functions, and the programmer's toolbox.
	www.digibuy.com /cgi-bin/product.html?114107509670 (87 words)

	AIAA - Book - Orbital Mechanics
		Designed to be used as a graduate student textbook and a ready reference for the busy professional, this third edition of Orbital Mechanics is structured so that you can easily look up the things you need to know.
		The book is clearly written in language familiar to aerospace professionals and graduate students, with all of the equations, diagrams, and graphs you would like to have close at hand.
		An updated software package on CD-ROM includes: HW Solutions, which presents a range of viewpoints and guidelines for solving selected problems in the text; Orbital Calculator, which provides an interactive environment for the generation of Keplerian orbits, orbital transfer maneuvers, and animation of ellipses, hyperbolas, and interplanetary orbits; and Orbital Mechanics Solutions.
	www.aiaa.org /content.cfm?pageid=360&id=976 (293 words)

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