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Modeling to Improve the Risk Reduction Process for Command File ErrorsThe Jet Propulsion Laboratory has learned that even innocuous errors in the spacecraft command process can have significantly detrimental effects on a space mission. Consequently, such Command File Errors (CFE), regardless of their effect on the spacecraft, are treated as significant events for which a root cause is identified and corrected. A CFE during space mission operations is often the symptom of imbalance or inadequacy within the system that encompasses the hardware and software used for command generation as well as the human experts and processes involved in this endeavor. As we move into an era of increased collaboration with other NASA centers and commercial partners, these systems become more and more complex. Consequently, the ability to thoroughly model and analyze CFEs formally in order to reduce the risk they pose is increasingly important. In this paper, we summarize the results of applying modeling techniques previously developed to the DAWN flight project. The original models were built with the input of subject matter experts from several flight projects. We have now customized these models to address specific questions for the DAWN flight project and formulating use cases to address their unique mission needs. The goal of this effort is to enhance the project's ability to meet commanding reliability requirements for operations and to assist them in managing their Command File Errors.
Document ID
20150008070
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
External Source(s)
Authors
Meshkat, Leila
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Bryant, Larry
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Waggoner, Bruce
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
May 13, 2015
Publication Date
September 10, 2013
Subject Category
Computer Programming And Software
Meeting Information
Meeting: AIAA SPACE 2013 Conference & Exposition
Location: San Diego, CA
Country: United States
Start Date: September 10, 2013
End Date: September 12, 2013
Sponsors: American Inst. of Aeronautics and Astronautics
Distribution Limits
Public
Copyright
Other
Keywords
spacecraft
Problem Reporting System (PRS)
Bayesian Belief Networks
Incident, Surprise, Anomaly (ISA) report

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