This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Modeling of Spacecraft Propellant Gauging System
Technical Paper
1999-01-2690
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
This paper describes modeling results for the on-orbit thermal response of spacecraft propellant used for orbit stationkeeping. The specific objectives of the work are to improve analytical models of a transient thermal Propellant Gauging System (PGS) in use on communications satellites. This simple method uses tank wall heaters and temperature sensors and a transient energy balance to obtain periodic measurements of remaining propellant fill. The fill levels must be related to the on-orbit sensor measurements through a thermal model of the system. In the past, relatively simplified representations have been used due to the complex liquid/gas geometry when in a weightless state. In the current work, advanced modeling tools are utilized to allow a more detailed representation of the actual liquid/gas geometry. Model results are presented for a range of fill levels later in life to assess PGS measurement resolution. Model results for a beginning of life case are compared to independent estimates of fill level to support model validation. Development of an accurate analytical model allows assessment of measurement accuracy and optimization of the hardware design and measurement procedure for different tank configurations.
Recommended Content
Authors
Citation
Ambrose, J., Yendler, B., and Collicott, S., "Modeling of Spacecraft Propellant Gauging System," SAE Technical Paper 1999-01-2690, 1999, https://doi.org/10.4271/1999-01-2690.Also In
References
- Purohit, G.P. Vu C.C. Dhir, V.K. Transient Lumped Capacity Thermodynamic Model of Satellite Propellant Tanks in Micro-Gravity, AIAA 99-1088, 37th AIAA Aerospace Sciences Meeting Reno, Nevada January 1999
- Brakke, K. A. The Surface Evolver Experimental Mathematics 1 2 1992 141 165
- MAYA Heat Transfer Technologies IDEAS TMG Thermal Analysis, Master Series 6 Reference Manual March 1998
- Collicott, S.H. Convergence Behavior of Surface Evolver Applied to a Generic Propellant Management Device, AIAA-99-0846, 37th AIAA Aerospace Sciences Meeting Reno, Nevada January, 1999