Nancy D. Email & Phone Number

Boulder, Colorado, United States

Boulder, Colorado, United States

Boulder, Colorado, United States

Greater Los Angeles Area

Propulsion Systems Engineer tasked to support satellite propulsion integration, design, test, and mission operations. In addition, support development of propulsion flow modeling and propellant bookkeeping software. Program support and unit level development support. Chemical and Electrical propulsion architecture support for commercial satellite programs. Hall Effect Thrusters: design reviews, software integration and testing of new technology. Direct interfaces to various subsystems and coordinating on requirements verification. Root Cause Corrective Action (RCCA) activities support for supplier noncompliance.

Houston, Tx

Systems Engineering and Integration Engineer for Payloads to the International Space Station (ISS). Payload research utilizing the ISS’ network requires program support in enabling and integrating their products onto the ISS. Accessibility to command and telemetry was coordinated through the payload software integration team. Support in new ISS command and telemetry capabilities available to payload developers such as Disruption/Delay-Tolerant Networks (DTN) for high demand downlink. Tasks included integration support, testing support, and support in defining their interface based on program-level requirements and capabilities.

Tulsa, Oklahoma

Stress Engineering for the G650. I typically worked on developing an analysis document for all potential oversized (OS) and deep countersinked (DCS) holes on the flap. Otherwise, I developed software tools for current employees to help expedite the tag process involving OS and DCS holes.

This project consists of two explorations of the eye: the group will (1) model the computationalfluid dynamics of the aqueous humor and (2) use applanation techniques to induce corneal deformations to determine corneal biomechanical properties in microgravity. After generating a computer-aided design (CAD) of a simplified eye in ANSYS Fluent, the group will use computational fluid dynamics (CFD) and fluid-structure interaction (FSI) analyses to determine key points of interest where fluid dynamics induced abnormal forces on the cornea. Observed sites of abnormal forces will guide the experimental focus during applanation-based biomechanical testing of the cornea in microgravity. Corneal applanation will be induced by a puff of air emitted from a Corvis ST tonometer, and the intraocular pressure (IOP) will be set to mimic the five mmHg IOP increase observed in space. The cornea responds to such applanation by flattening, and the velocity and deformation magnitude of this flattening can be used to characterize corneal stiffness. The corneal response to applanation will be measured by taking 140 images of the cornea over a 30 ms period with the Corvis ST tonometer’s ultra-high-speed scheimpflug camera. Subsequent image analysis will be used to derive corneal response properties such as deformation velocity and corneal thickness. Using this data, the group will characterize the behavior of the cornea in microgravity. Computational fluid dynamics will help the scientific community better understand aqueous humor behavior, and the analysis of corneal response to applanation will provide insight into the role of corneal biomechanics in vision loss in space. Results from this investigation will contribute to the development of future diagnostic and preventative measures concerning blurred vision in long-term space travel. Flight week was May 30th to June 7tth, 2014. For the microgravity flight photos, contact me or my other teammates.