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HW3 - HW#3 1 at150kmaltitude, a b !V1)

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Space Systems Engineering I HW #3 1. NASA wants to move a malfunctioning spacecraft from a circular orbit at 500km altitude to one at 150km altitude, so a Shuttle crew can repair it. a. What is the energy of the transfer orbit? b. What is the velocity change ( ! V 1 ) needed to go from the initial circular orbit into the transfer orbit? c. What is the velocity change ( ! V 2 ) needed to go from the transfer orbit to the final circular orbit? d. What is the time (TOF) required for the transfer? 2. A new research spacecraft is designed to measure the environment in the tail of Earth’s magnetic field. It’s in a circular parking orbit with a radius of 12,756 km. What
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