Phase Ⅳ represents a sizable project, both in terms of the final hardware assembly and in the total scope of the effort and its management. While Microsat may have seemed to have interfered in the progress of Phase IV, many of the key elements of systems that we will need for Phase Ⅳ will find their roots in the Microsat program. Microsat has not contributed anything, however, to the Phase Ⅳ mechanical engineering effort, as the two spacecraft are so vastly different in size and mission.
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