William Figueiredo Email & Phone Number

Hanover, Maryland, Us

Guidance Navigation and Controls Engineer at Stratolaunch.com located at Mojave Spaceport, California. Designing Guidance, Navigation, and Control for rocket planes being launched from the Stratocruiser launch aircraft.

Dallas, Tx, Us

Guidance and control missile analyst supporting engineering analysis of world-wide missile capabilities. Researched and documented world-wide locations of missile guidance and control components and systems, production, and design capabilities. Performed technical database searches in support of technical databases, assessments and summaries for the counterproliferation and planning systems (CAPS) program within the Global Security Division. Performed foreign missile guidance, navigation and control system assessments. Developed comprehensive missile guidance navigation and control system engineering process flows and descriptions, component and system functional and process descriptions, and databases. • Wrote over 90 missile guidance and navigation and control documents ranging from paragraph descriptions to 30 to 40-page tutorials of missile guidance, navigation, and control components and systems• Created a supporting database of missile guidance navigation and control references

C++ programming in Linux/Unix environment. Wrote and debugged C++ algorithms in support of launch vehicle simulation software mission assurance. Rocket propulsion and ascent autopilot control block modeling of C++ algorithms. Wrote C++ algorithms from rocket propulsion and autopilot control block models from ascent to orbit. Matlab data processing of missile six-degree of freedom (DOF) aero. Rocket thrust vector control (TVC) mixer and control system performance in Matlab Simulink. Lambert rocket ascent guidance to orbit. Trajectory error budgets for rocket ascent autopilot simulations to orbit. Rocket ascent autopilot controls modeling for stability margins and step response with rigid body or structural and slosh mode effects. Longitudinal and lateral-directional state plant modeling during ascent. Orbital mechanics analysis. Calculation of in-flight rocket control system stability margins with structural modes during ascent. • Supported mission assurance on Space X Falcon Heavy STP-2 Program

Performed 8D failure reporting analysis and corrective action (FRACAS) studies of aircraft cockpit displays. Performed display printed circuit board (PCB) upgrades for passive and active IC components. Performed SPICE circuit analysis, PCB ground plan analysis. ATP, QTP, QTR, FTP documentation. DO-160 Environmental Test report documentation. Qualification by similarity documentation. Heat transfer analysis of electrical circuit components, boards, and cockpit displays. Performed Relex MIL-217 reliability analysis for mean time between failure (MTBF) and failure modes, effects and criticality analysis (FMECA) of electrical components and systems. Proposal writing. Reliability growth modeling. System requirements and functional analysis. Bread board circuit development and PCB electrical checkout. • Supported DI/O, AI/O, Rear Panel, CPU, and Motherboard PCB redesign of CASA-295 engine display and motherboard electrical checkout• Performed CASA 295 Engine Display reliability and system safety analysis • Performed Bell 429 helicopter display unit electrical analysis and component upgrade support

Performed system engineering to plan, capture, analyze, design, test, document, and manage system requirements for horizontal stabilizer trim actuators (HSTA) and pilot throttle control quadrants. Prepared DO-160 environmental qualification test procedures, and reports. Completed FRACAS reports and FMECA studies. • Provided system engineering support on throttle control quadrant rotational variable differential transformer (RVDT) sensor selection on dual source purchasing study. Completed RVDT system requirements analysis and FMECA. Determined throttle quadrant RVDT improvements, test and system requirements updates.• Performed system requirement definition on Dassault F7X HSTA horizontal stabilizer electronic control unit (HSECU) and horizontal stabilizer electronic backup unit (HSEBU) printed circuit board upgrades. Recommended revised printed circuit board FMECA and accelerated aging tests. • Provided support for completing ARJ21 Chinese regional airliner HSTA certification by completing DO-160 environmental qualification test procedures, qualification test reports and FRACAS reports for Parker Aerospace. Updated ARJ21 HSTA functional interface control document (FICD) system requirements.

Charlotte, North Carolina, Us

Systems Engineer Level III, Boeing 787 Flight Control Systems Updated and verified Boeing 787 Autoflight autopilot system requirements, Autoflight control system software. Developed system test plans and procedures for DO-178B certification on the Boeing 787 flight control system software. Supervised automation development of system test and evaluation procedures.•Developed and executed approach tuning, heading track fault response, heading track source selection, and autopilot master mode determination, and autopilot disconnect system test plans and procedures which supported flight software certification, design, and safety of flight for the Boeing 787 flight control system.•Completed system change requests per management request for updating Boeing 787 Autoflight flight control system software and requirements for design, safety of flight, and DO-178B certification flight software. •Supervised automation efforts for Boeing 787 heading track source selection systems test.

Dulles, Virginia, Us

Completed guidance, navigation, and control autopilot designs for advanced weapon and guided missile systems. Performed flight mechanical and aerodynamic analysis and wind tunnel test of high-speed flight systems, as well as flight system handling qualities analysis. Led GNC efforts on weapon programs. •Completed guidance, navigation, and control autopilot design, aerodynamic and flight mechanical analysis and wind tunnel test for advanced hypersonic air breather weapon system called High-Speed Strike weapon and delivered autopilot design and simulation to ATK Thiokol.•Developed, and completed wind tunnel test for tank munitions program. Wind tunnel data conclusions resulted in major change in program direction.•Supported project, and technical management briefings and reviews with presentations to project leaders of high-speed strike weapon and MRM projects.•Led GNC efforts on Boost to Cruise and MRM projects. •Developed and performed flight mechanical simulation analysis on Threat-D, J-damm, and ARGMM programs supporting proposal, development, and range safety flight test approval.•Developed, implemented, and delivered a Monte Carlo six-DOF reentry vehicle target impact analysis supporting the SRP-3 proposal with ATK Thiokol.•Developed and delivered an orbital insertion guidance and control algorithm with Lambert guidance and rendezvous supporting the ATK Thiokol Small Launch Vehicle program. •Developed, completed, and documented a handling qualities analysis supporting BQM-167A target vehicle MIL-spec compliance effort.

Performed aerodynamic, flight mechanical, guidance, navigation, and flight control, and propulsion analysis of proposed Air Force launch vehicles, reentry vehicles, and rocket engines. Presented results at AIR FORCE RESEARCH LAB management reviews and wrote conference papers and lab reports.•Completed hypersonic reentry vehicle and air breather propulsion guidance and control analysis, 6-degree of freedom aerodynamic and flight mechanical analysis. Results were transferred to projects supporting Air Force air breather launch vehicle and reentry vehicle assessments.•Completed reaction control system analysis supporting maneuvering reentry vehicle flight control assessments.•Completed propulsion analysis and wrote propulsion conference paper supporting MEMS rocket engine assessment for the Air Force.•Supported and presented project, and technical management briefings and reviews to lab director, lab chief scientist on Air Force reentry vehicle programs every six months.•Performed aerospace program management of Air Force maneuvering reentry vehicle program.

Completed launch vehicle aerodynamic, guidance, navigation, and control and staging optimization analysis in support of Air Force missile and propulsion assessments.•Completed launch vehicle general arrangement aerodynamic analysis supporting POST code analysis efforts for Air Force dual-role missile program assessment.•Completed trajectory, controls, and staging optimization analysis on rocket based combined cycle (RBCC) launch vehicle supporting Air Force assessments of air breather launch vehicles.•Did six-month project, technical management briefings, and review presentations to Lab project management, lab director and lab chief scientist for Air Force project assessments.•Performed program management and monitoring supporting Air Force launch vehicle programs.

Completed flight guidance, navigation, control, and air data design for autopilot designs of advanced flight test vehicles for NASA Dryden Flight Research Center. Performed flight test planning, test pilot simulation and handling qualities analysis and documentation of engineering results of advanced flight test vehicles for NASA.•Completed preliminary and detailed flight control autopilot design and air data system design supporting NASA ERAST APEX remotely piloted vehicle (RPV) flight test program.•Completed detailed control system analysis to determine appropriate system models, and selected and developed solution methods supporting ERAST APEX RPV and Hyper X-43A programs.•Completed writing Objective and Requirements Documentation (ORD) required for ERAST APEX flight test program.•Participated in APEX RPV Critical Design Review at NASA supporting APEX flight test preparation. •Completed flight handling qualities and control system stability margin analysis supporting Hyper X-43A flight test.•Documented and published APEX lost-link autopilot guidance navigation and flight control performance supporting technical transfer of relevant NASA flight vehicle design data to industry.

M.S., Electrical Engineering, Control And Robotics Systems

Ms, Aero And Astronautical Engineering

Bs, Aero And Astronautical Engineering