Unformatted text preview: Consider an Earth orbit of a =7000km and e =0.2 13. (2 points) Calculate the mean motion. 14. (2 points) Calculate the radius at perigee. 15. (2 points) Calculate the velocity at apogee. 16. (2 points) Calculate the velocity at perigee of a spacecraft in a parabolic Jovian (i.e. Jupiter) orbit whose closest approach to the planet is 100,000 km. Proposal Questions 17. (2 points) Show the steps in Arthur C. Clarke’s correct calculation of the worst-case eclipse duration for a geostationary spacecraft. 18. (2 points) Calculate a , e , E , n , and the period for two of the orbits in which your spacecraft will find itself during its lifetime. If you can think of only one orbit, also calculate the kinetic energy (not the specific energy) and the velocity at true anomaly ( nu ) ν =-π /4 for that single orbit....
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- Spring '08
- Kinetic Energy, Velocity, Celestial mechanics, Arthur C. Clarke