Ruth Fragoso

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Angela Ndalianis

Swinburne University of Technology, Hawthorn

Daniel Cassany

Pompeu Fabra University

Alice Casarini

Università di Bologna

Miguel Ángel Esparza Torres

Universidad Rey Juan Carlos

Paola Brembilla

Università di Bologna

Kruzkaya Elizabeth Ordóñez González

Universidad Tecnica Particular de Loja

Dennys Silva-Reis

Universidade Federal do Acre

Todd Graham

University of Leeds

Aldo Ocampo González

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Roger H . Solorzano Canales

Universidad Centroamericana (UCA) Nicaragua

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Papers by Ruth Fragoso

OCO-2 validation discussion

Training and verification for risk reduction on the new classes of missions at NASA's Jet Propulsion Laboratory

2003 IEEE Aerospace Conference Proceedings (Cat. No.03TH8652)

The focus on improving and increasing planetary exploration with lower cost missions and the unfo... more The focus on improving and increasing planetary exploration with lower cost missions and the unfortunate incidents of the not so distant past point to a need for risk reduction without budget inflation. To satisfy this need requires a robust program well founded in standardized practices with standards of performance. Standardized practices facilitate repeating successful projects without recreating all of the

The OCO-2 Validation Matrix: A Systematic Approach to Mission Validation

AIAA SPACE 2015 Conference and Exposition, 2015

The Orbiting Carbon Observatory (OCO-2) mission was launched on July 2nd 2014 on the first of the... more The Orbiting Carbon Observatory (OCO-2) mission was launched on July 2nd 2014 on the first of the last set of Delta II rockets from Vandenberg Air force Base. It is currently operating in the A-train and collecting data that will help scientists to understand the global carbon cycle. As with all NASA missions the OCO-2 mission went through a rigorous V&V (Verification and Validation) program. The program used the DOORS (Dynamic Object Oriented Requirements System) tool to implement a verification matrix complete with detailed verification activities that were used to accept the associated requirements as verified. On the other side of V&V is validation, and there are several methods that can be taken to construct a validation plan, unfortunately, few provide the ease and simplicity of the verification matrix used on OCO-2. In addition it is almost impossible to know conclusively that your system is fully validated until it is operating in space. In order to better prioritize the validation program of the OCO-2 mission the OCO-2 project V&V team developed and utilized a “validation matrix”. This matrix was used to help focus the OCO-2 ORTs (Operational Readiness Tests) and other validation testing on specific objectives and to optimize other tests as needed. While not all of the objectives identified in the matrix were closed during the ORTs it did provide the V&V team a method by which they could feel confident that the operations team, processes and procedures and the spacecraft observatory were ready for launch & operations. In this paper we will discuss the process used for developing the OCO-2 validation matrix, and how it was used in practice during the OCO-2 testing program. INTRODUCTION Validation is often describe as a method for ensuring that the mission that was built/designed will meet the objectives of the people who originally conceived the mission. Unfortunately it is difficult to determine what constitutes a good validation test, and determine when enough validation testing has been completed in order to demonstrate that the mission has been fully validated. On OCO-2 we attempted to answer both of these questions with a validation matrix, crafted and used by the team to make sure the right validation tests were being performed and that they covered the full scope of the OCO-2 mission.

Revisiting Training and Verification Process Implementation for Risk Reduction on New Missions at NASA's Jet Propulsion Laboratory

AIAA SPACE 2007 Conference & Exposition, 2007

In 2003 we proposed an effort to develop a core program of standardized training and verification... more In 2003 we proposed an effort to develop a core program of standardized training and verification practices and standards against which the implementation of these practices could be measured. The purpose was to provide another means of risk reduction for deep space missions to preclude the likelihood of a repeat of the tragedies of the 1998 Mars missions. We identified six areas where the application of standards and standardization would benefit the overall readiness process for flight projects at JPL. These are Individual Training, Team Training, Interface and Procedure Development, Personnel Certification, Interface and procedure Verification, and Operations Readiness Testing. In this paper we will discuss the progress that has been made in the tasks of developing the proposed infrastructure in each of these areas. Specifically we will address the Position Training and Certification Standards that are now available for each operational position found on our Flight Operations Teams (FOT). We will also discuss the MGSS Baseline Flight Operations Team Training Plan which can be tailored for each new flight project at JPL. As these tasks have been progressing, the climate and emphasis for Training and for V &V at .JPL has changed, and we have learned about the expansion, growth, and limitations in the roles of traditional positions at JPL such as the Project's Training Engineer, V &V Engineer, and Operations Engineer. The need to keep a tight rein on budgets has led to a merging and/or reduction in these positions which pose challenges to individual capacities and capabilities. We examine the evolution of these processes and the roles involved while taking a look at the impact or potential impact of our proposed training related infrastructure tasks. As we conclude our examination of the changes taking place for new flight projects, we see that the importance of proceeding with our proposed tasks and adapting them to the changing climate remains an important element in reducing the risk in the challenging business of space exploration.

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