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Small Spacecraft Missions – How About Flying a CubeSat? - page 22 / 44

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Slide 22

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Construction

Electrical Power System (EPS)

Simple EPS – batteries (or solar) only

Standard EPS – solar cell interface, PPT, batteries

Li-Ion & Li-Poly rapidly becoming battery of choice. We probably won’t see NiCd & NiMh on future CubeSats

Lithium cell voltage is nom. +3.7V – this impacts power systems directly, as combining them in series introduces many concerns, primarily safety.

Batteries are there for peak power consumption.

QuakeSat – 15W – dead batteries – reset out of eclipse.

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