10 Orbital Maneuvers Philosophy is such an impertinently litigious lady that a man had as good be engaged in lawsuits as to have to do with her. Isaac Newton in a letter to his friend Edmund Halley, June 20, 1687 Introduction Orbital Energy Sir Isaac Newton (1643-1727). English Physicist, Astronomer and Mathematician who described and the three , laying the groundwork for , which dominated the Spacecraft is not inserted in an orbit to stay forever! A spacecraft may need scientific view of the physical for the next to change its orbit once or more during its life time due to many reasons. A three centuries and is the basis for modern engineering. launch vehicle may insert a geostationary (GEO) satellite into an initial low Earth orbit (LEO) which is much lower than the final operational orbit. Then, the satellite should transfer from the initial orbit to its final orbit. Another need may arise if a surveillance satellite has to change its orbit in order to track a new target. Interplanetary missions usually require many orbit transfers until the spacecraft is inserted into the operational orbit or to use the same spacecraft to accomplish more than one mission. At the satellite end of life (EOF), the satellite may be kicked out of its orbit whether to reenter the Earth’s atmosphere or to rest in a graveyard orbit.
10 Orbital Maneuvers Sir Isaac Newton (1643-1727). English Physicist, Astronomer and Mathematician who described and the three , laying the groundwork for , which dominated the scientific view of the physical for the next three centuries and is the basis for modern engineering. Philosophy is such an impertinently litigious lady that a man had as good be engaged in lawsuits as to have to do with her. Isaac Newton in a letter to his friend Edmund Halley, June 20, 1687 Introduction Orbital Energy Spacecraft is not inserted in an orbit to stay forever! A spacecraft may need to change its orbit once or more during its life time due to many reasons. A launch vehicle may insert a geostationary (GEO) satellite into an initial low Earth orbit (LEO) which is much lower than the final operational orbit. Then, the satellite should transfer from the initial orbit to its final orbit. Another need may arise if a surveillance satellite has to change its orbit in order to track a new target. Interplanetary missions usually require many orbit transfers until the spacecraft is inserted into the operational orbit or to use the same spacecraft to accomplish more than one mission. At the satellite end of life (EOF), the satellite may be kicked out of its orbit whether to reenter the Earth’s atmosphere or to rest in a graveyard orbit.
Space_Mechanics_Chapter_10_OrbitalManeuvers.docx