Unformatted text preview: A space probe is in a circular parking orbit at an altitude of 225 km above the Earth. The probe is ready to be launched on a parabolic escape trajectory from the parking orbit. Calculate the minimum escape speed required to leave the parking orbit. Assume that the Earth is spherical with the Mean Equatorial Radius of 6,380 km. Problem 4 Consider the Quadrantal Spherical Triangle of Fig. 5-7(c), and assume that the reference meridian is the great circle just to the left of point B in the diagram. (a) Show the locations of points A, B, and C in degrees in the form (Az , El) ; (b) Calculate the area of the triangle in steradians (you need to use Appendix D); (c) Calculate the unit vector coordinates of points A, B, and C. Problem 5 A radar station locates an object at r = - 6,400 i- 6,400 j- 6,400 k (in km units). The velocity of the object is registered as V = 2.5 i- 2.5 j + 2.5 k (in km/s units). Calculate all of the orbital elements listed in Table 6.2....
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- Spring '07
- Celestial mechanics, Astrodynamics, specific mechanical energy, parking orbit