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    Personal information
    Contact information
    Candidate Profile
     Date Submitted:09-09-2013
     Last Modified:09-09-2013 (03:47)
    Job information
     Current job:Mission Systems Engineer
     Employment Term:Temp/Contract
     Job location:Own country
     Date available:immediately
     Industry:Satellite Manufacturers and Subcontractors, Satellite Operators, Consulting/Engineering Services
     KeywordsAttitude Control, Propulsion, Orbit Analysis, Mission Analysis


    • 30 years of experience in the mission/spacecraft systems field specializing in orbits, attitude dynamics and control, and space propulsion mostly with remote sensing (SAR) missions.
    • Spacecraft system level design and analysis, spacecraft configuration, mass properties
    • Orbit and constellation design, orbit dynamics (perturbation) analysis, maneuver planning
    • Attitude dynamics and control system design, analysis, simulation, and testing
    • Space propulsion analysis, fluid flow analysis and simulation
    • Acquired a wide range of skills demonstrated through many assignments
    • extensive analytical skill in many different areas
    • problem solving in the development of large systems leading to novel solutions including patents
    • development and use of mathematical models and related software tools
    • signal processing in support of attitude control design and simulation
    • software and system development processes for flight, analytical, and operational software as well as for operational scripts
    • report writing, presentation, and stakeholder interaction skills and experience
    • Broad base encompassing the full life cycle of several space programs including conceptual study, preliminary and critical design, AIT (Assembly, Integration, & Test), ground control system integration, and mission operations.
    • Definition of formal requirements based on customer needs interview/survey, concept design, and program execution planning
    • Requirements interpretation, subsystem allocation, change management (including waivers/deviations/non-conformances), and verification
    • Component/subcontractor evaluation, selection, and management
    • Performance analysis and simulation, trade analysis
    • Preparation and/or review of Failure Modes, Effects, and Criticality Analyses, management of critical items
    • Interface definition, management, and verification
    • Test planning, procedure development, execution, and analysis
    • Development and execution of commissioning plans and procedures
    • In-orbit performance analysis, fault analysis, and contingency operations
    • Development, design, and execution of operational workarounds for in-orbit failures


    Sep 1978 - Aug 1982  Bachelor of Engineering from McGill University, Montréal, QC

    • Honours Mechanical, first class standing
    • McConnell Scholarship (1978-82)
    • Thesis: Stochastic Identification of the Vestibulo-spinal Reflex Arc

    Sep 1984 - Aug 1985    Sabbatical at the McGill University Centre for Intelligent Machine Research, Montréal, QC

    • NSERC Fellowship
    • Research project: the simulation of holonomic systems


    MacDonald Dettwiler and Associates (Space Missions Group) 

    3701 Carling Avenue, Ottawa ON 

    June 2009 – Dec 2012   Staff Scientist, AIT/Systems

    • SIS (Satellite In-orbit Servicing ) Mission Systems  
    • NGC (Next Generation Canadarm) & SIS Refuelling Subsystem design
    • RCM (Radarsat Constellation Mission) Mission Systems (attitude control, propulsion, mass properties analysis and test, outage analysis, orbit analysis, orbital debris analysis, re‑entry analysis, collision risk assessment, verification, AIT support, operations support, and general mission systems analyses)

    Jan 2002 – June 2009   Senior Scientist, Systems Engineering

    • SIS Refuelling Subsystem Design and Mission Systems
    • RCM Mission Systems
    • Radarsat 2 Mission Systems
    • Radarsat 1 pitch wheel (and potential horizon scanner) failure assessment and recovery strategy
    • Topographic Mission orbit options study, Tandem Dwell Slew study, low cost mission study (configuration, launch options, and propulsion requirements), etc.

    Bristol AeroSpace (Space Group)

    3701 Carling Avenue, Ottawa ON 

    Mar 2000 – Jan 2002   Senior Spacecraft Systems Specialist, Systems Engineering                 

    • Technical Lead for SciSat-1 Attitude Determination and Control Subsystem
    • Systems Lead for GyroWheel product development. The GyroWheel is a reaction wheel whose rotor is mounted on a flexure so that torques can be applied in 3 axes with a single mechanism and so that it can be used to measure the cross axis rate.

    EMS Technologies, Canada (Space and Electronics Group) / Spar Aerospace [prior to Jan 1999]

    21025 Trans Canada Highway, Sainte-Anne-de-Bellevue, QC 

    Jul 1998 – Feb 2000   Dynamics & Control Specialist, Systems Engineering

    • Dynamics & Control Lead for Skybridge HTT Antenna (a gimbaled antenna that tracks a target on the ground from a low earth orbit spacecraft); design phase
    • Mechanical Systems Lead for Skybridge HTT Antenna

    Mar 1990 – Jul 1998    Senior Member, Systems Engineering

    • Dynamics & Control Lead for INX Intersatellite Link (a gimbaled antenna that tracks other spacecraft in a low earth orbit constellation); proposal phase
    • Mechanical Systems Lead for above antenna
    • Mechanical Systems Lead for DBS “LightSat” development and for “ARCSAT” mobile communications spacecraft payload
    • Attitude Control Specialist for the team that recovered the Radarsat 1 spacecraft from tumbling
    • Attitude Control System Lead for Radarsat 1 Launch and Commissioning
    • Spacecraft Systems Lead for Radarsat 1 Ground Segment
    • Bus Systems Lead for Radarsat 1 Spacecraft
    • Lectured courses on Spacecraft Systems Engineering at the University of Toronto and at the Université de Montrèal

    Aug 1982 - Jun 1990   Systems Engineering

    • Repackaging exercise for the Radarsat 1 spacecraft to allow it to fit on a Delta II expendable (change from 4.65 m to 2.7 m diameter envelope) enabling the program to proceed on a drastically descoped budget.
    • Attitude control, propulsion, and configuration systems conceptual design and analysis for Radarsat 1 and MSAT proposal  phases
    • Mechanical/Electrical Systems Lead responsible for a systems engineering team working on the Radarsat spacecraft  proposal
    • R&D for development of attitude control simulation tools
    • CASS (generic attitude control subsystem) R&D program Project Engineer
    • Various other phase A studies  and R&D work in attitude and orbital control, flexible body dynamics, and propulsion


    • K. W. Spring et al, In-Orbit Refuelling System, US Patent pending (submitted Oct 2011)
    • K. W. Spring and H.J. Moody, Divided LLBFN/HMPA Transmitter Architecture, US Patent 4,901,085
    • K. W. Spring, "Euler  Parameters  and  the  Use  of  Quaternion  Algebra in The Manipulation of Finite Rotations: A Review,"  Mechanics and Machine Theory, v. 21, no. 5 (1986): 365‑373.


    • Peer Award (MDA, February 2011) for the design and implementation of the Refuelling Subsystem on the Satellite In-Orbit Servicing program
    • Certificate of Appreciation (MDA, March 2007) in recognition of my contribution to the successful completion of the Radarsat 2 Environmental Test Campaign
    • Corporate Award (Spar, May 1996) for outstanding contribution as a member of the Radarsat 1 Team
    • Team Award (Spar,1990) for the successful capture of the Radarsat 1 spacecraft program


    High level of computer literacy; can learn new applications with little or no training

    • Compilers:              Fortran, C, EXCEL visual basic
    • Applications:           MATLAB/Simulink, Various NASA applications related to orbital debris and spacecraft de-orbit, and MATHCAD


    • Nationality:              Canadian
    • Languages:             English (native), French (working knowledge)


    • Available on request

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