Question

Problem 8

A satellite must be brought back from a circular 12 hour orbit to an orbit at a rentry altitude of 75km using

a minimum of fuel. a) What is the altitude of the initial orbit? b) Calculate the eccentricity of the transfer

ellipse. c) Calculate the first velocity increment required. d) Calculate the second velocity increment to

achieve an orbit at re-entry altitude.

2.02×104 km, 0.61, 1.45km/s, 2.11km/s)

(Answers: