• Achieved certification to perform range safety analysis of the space shuttle.• Achieved certification to design initial values of the space shuttle software in order to meet mission objectives. • Designed range safety flight envelopes for the space shuttle via simulations that incorporated the space shuttle flight software.• Determined that disposal constraints were met via simulations that incorporated the space shuttle flight software. Simulations were designed to determine the external tank footprint for all missions. In addition, simulations were also designed to ascertain where the solid rocket boosters could be expected to splash down in the Atlantic Ocean.• Designed mission specific displays for the space shuttle crew.• Gave presentations to the flight software community showing how analysis of the space shuttle flight software was performed in order to obtain authorization from NASA to standardize certain initialization parameters of said flight software.

• Served as the prime safety, reliability, and quality assurance representative to the sequencing mode team that was tasked to eliminate discrepancies within the space shuttle sequencing software.• Kept the NASA branch chief for safety, reliability, and quality assurance informed of the progress being made by the sequencing mode team.• Suggested to the NASA branch chief that the sequencing mode team invite the personnel responsible for the backup flight software to join the team due to the numerous modifications that were being discussed for this software.• Participated in the development of all test plans that were being discussed by the sequencing mode team in order to test all modifications that were being made to the sequencing software. Test plans included unit testing, integration testing, and regression testing.

• Certified within the level 8 testing organization to perform guidance, navigation, and flight control testing of the space shuttle software.• Verified that the guidance, navigation, and flight control of the space shuttle was ready for flight by evaluating plots and tabular data. • Provided written test reports for distribution to the flight software community that documented the performance of the guidance, navigation, and flight control software of the space shuttle.• Improved simulation timelines in order to accurately reflect crew procedure.• Reduced the risk of quality escapes by developing and improving criteria for evaluating the performance of the guidance, navigation, and flight control software.• Alerted the flight software community if anything unusual was uncovered during testing of the guidance, navigation, and flight control of the space shuttle. As an example, flight control saturation was detected during simulation of the abort software for mission STS-31. This information was presented at the performance test review meeting.• Led a working group which performed user acceptance testing of upgrades made to the software production facility. This facility was the platform used to test the space shuttle software.• Provided support for testing proposed changes to the space shuttle software. For example, a method for calculating the direction of the earth pole vector had been devised and made ready for implementation on the next operational increment of the space shuttle software. Testing of this new software verified that the direction of the earth pole vector was being accurately calculated. Applied appropriate patches to the current flight software in order to perform this test