Raul Largaespada Email & Phone Number

El Segundo, California, United States

Pasadena, California, United States

- Participated in trade study to select new build system for SRL flight software.- Researched Bazel build system and contrasted with GNU Make.- Presented benefits and drawbacks of Bazel to FSW developers and system engineers.- Prototyped SRL build system using Bazel and validated against pre-existing GNU Make build system.- Documented Bazel idiosyncrasies and provided recommendations for future development of a fully hermetic build system for SRL using Bazel.

Pasadena, California, United States

Worked part-time while completing Master of Engineering degree at MIT, full-time during summer 2022.Europa Clipper MIL-STD-1553 Bus Testing- Authored Python test cases for Europa Clipper flight software module which controlled the MIL-STD-1553 bus on the spacecraft.- Europa Clipper main computer uses MIL-STD-1553 standard to communicate with peripherals such as the inertial measurement unit.- Nominal testing of 1553 bus required sending commands and verifying correct telemetry was downlinked and expected data was found in 1553 bus logs.- Off-nominal 1553 bus testing required fault-injection, for example disabling a peripheral and verifying that the correct autonomous fault protection response was executed.- Documented test results and created anomaly reports for test failures. Used test results to verify requirements on Europa Clipper flight software.- Collaborated with flight software developers to characterize anomalies which caused tests to fail, and verified flight software patches corrected anomalies and implemented the desired behavior.Europa Clipper System Fault Protection Testing- Authored Python test cases for Europa Clipper flight software module which governed autonomous fault protection at the system-level.- System-level fault protection defines complex behaviors involving coordination between multiple flight software modules to recover from significant anomalies without human input.- Testing system-level fault protection required running fault protection behaviors individually and in sequence with each other, and verifying all steps of all behaviors completed successfully. This included each branch of behaviors which change depending on the state of the spacecraft.- Collaborated with flight software developers to characterize flight software fatal errors resulting from complex interactions between different fault protection behaviors when run in sequence.

Pasadena, California, United States

- Developed Python test cases for Europa Clipper flight software telemetry selection rules (TSRs).- TSRs define the subset of telemetry channels which are downlinked from the spacecraft to the ground, and the conditions for this telemetry to be updated.- TSR tests verified combinations of telemetry data types, downlink conditions, and downlink rates available to TSR authors.- Authored library of TSR testing utilities to allow for greater TSR test coverage.- Characterized Europa Clipper inertial measurement unit (IMU) anomaly by using Python libraries NumPy and Matplotlib to correlate datasets including MIL-STD-1553 bus logs, IMU data logs, and flight software event reports.- IMU analysis was used to identify root cause of anomaly and plan a mitigation strategy.

Pasadena, California, United States

Payload Packet Parser Command Line Tool- Built a Python command line tool to parse command and telemetry packets sent between Europa Clipper avionics and payload instruments.- Tool used command and telemetry packet definitions from Europa Clipper avionics-payload interface document to parse binary packet data from log files into constituent data fields.- Tool validated packets for message errors, reported statistics on any errors detected, and exported data as Excel spreadsheets for further analysis by Europa Clipper instrument engineers.- Error reports and Excel outputs were used to verify requirements on Europa Clipper avionics-payload interface.- Tool was built using Pandas, bitstring, click, and xlsxwriter Python packages.- Documented and presented software architecture of tool to Europa Clipper instrument engineers and software developers.EC Instrument Verification Activity Plans- Researched Europa Clipper instrument operation by reading design documents and command and telemetry dictionaries.- Used instrument documents to develop off-nominal verification activity plans (VAPs) for four Europa Clipper instruments.- A VAP details the steps to follow to verify a set of Europa Clipper requirements or command/telemetry artifacts, including commands to send and expected telemetry received in response.- An off-nominal VAP specifically tests off-nominal scenarios, such as erroneous commands or fault protection responses.- Presented VAPs to test developers and instrument engineers, explaining design decisions and sources for expected behavior from flight software.- Established standards for remaining set of payload off-nominal VAPs to be authored by instrument engineers.

El Segundo, California, United States

- Authored a Python toolbox of GUI components based on PyQt5 for use in frontend of in-house satellite design application, refined from GUI prototype developed during previous internship.- GUI toolbox extended existing set of PyQt5 GUI widgets to simplify access to user inputs and more easily display computed outputs.- Integrated GUI toolbox with Qt Designer to support graphically building up application frontend rather than relying on defining the frontend programmatically.- Documented and presented GUI toolbox implementation and Qt Designer workflow to project developers and provided recommendations for future development.

El Segundo, California, United States

- Developed prototype GUI and backend of in-house satellite design application.- GUI prototype was built using PyQt5 Python GUI library, backend was based on NumPy Python package.

Pasadena, California, United States

- Built JavaScript widget to visualize verification status of Europa Clipper flight system requirements.- Data visualization widget was used to sort requirements by author, assignee, due date, etc. and give an overview of the state of the flight system verification and validation effort.- Drafted Europa Clipper incompressible test list (ITLs) based on ITLs for previous NASA JPL missions.

Master Of Engineering - Meng, Electrical Engineering And Computer Science

Member of Autonomous Underwater Vehicle Laboratory. Thesis: An Application of Graph of Convex Sets Trajectory Optimization to the Marine.

Bachelor Of Science - Bs, Aerospace Engineering, Electrical Engineering And Computer Science (Eecs)

Activities and Societies: Gordon Engineering Leadership (GEL) Program, Fall 2018-Spring 2020 - Practiced leadership, negotiation.