Title:
Improvements on Two-Phase Cold Gas Propulsion Systems for Small Spacecraft
Improvements on Two-Phase Cold Gas Propulsion Systems for Small Spacecraft
Author(s)
Hart, Samuel T.
Lightsey, E. Glenn
Lightsey, E. Glenn
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Abstract
Small spacecraft such as CubeSats are being used to accomplish increasingly complex
missions requiring precise relative positioning and maneuverability. This capability
is often provided by cold gas propulsion systems, many of which use a two phase
propellant. These systems have the benefit of being simple and inexpensive,
but their capabilities are limited by the current technology. There is a need for a next
generation of cold gas propulsion systems that are capable of improved performance
relative to the heritage systems. This paper outlines the propulsion needs of future
CubeSat missions, describes the shortcomings of current systems, and proposes a
design concept for the next generation of cold gas propulsion units for use on small
spacecraft missions. The key areas for improvement are identified as propellant management,
temperature compensation, manufacturing, leak mitigation, and reliability.
The proposed next-generation propulsion system, referred to as GTCG2, aims to improve
in these areas through the use of advanced additive manufacturing, a novel
propellant management system, closed-loop temperature control, and redundancy of
key components. This architecture will allow for increased reliability, repeatability
of impulses, and impulse density while maintaining a low cost.
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Date Issued
2023-02
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Text
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Paper
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Unless otherwise noted, all materials are protected under U.S. Copyright Law and all rights are reserved