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Closing the Power Budget Architecture for a 1U CubeSat Framework
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A 1U CubeSat framework is designed as a baseline for future missions at Georgia Tech’s
Space Systems Design Laboratory. The goal of the initial CubeSat is primarily educational,
and future iterations intend to demonstrate a low cost and repeatable life-cycle process that
overcomes the high turnover of labor faced by most universities. The purpose of the initial
CubeSat design is to return detailed ADCS data from the reaction wheel, magnetorquers,
and GPS on board. Due to the volume constraints of a 1U form factor, the presented power
budget features various power profiles aimed to maximize the lifetime of the CubeSat from
a deployment in an orbit similar to the ISS. From this, pointing requirements for the ADCS
system can be derived to maximize solar panel exposure to sunlight, and future 1U CubeSats
have a better understanding of the tight margins present in the design.