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    Personal information
    Contact information
    Candidate Profile
     Date Submitted:08-06-2011
     Last Modified:29-11-2011 (12:29)
    Job information
     Current job:Post-doctoral Research Associate
     Employment Term:Temp/Contract
     Job location:Anywhere
     Date available:
     Industry:Satellite Manufacturers and Subcontractors, Satellite Operators, ,
     Keywordsnonlinear methods, formation flying, orbit design

    Work Experience

    February 2010 -- present: post-doctoral research associate at the Asher Space Research Institute, Faculty of Aerospace Engineering, Technion -- Israel Institute of Technology, under the supervision of Professor Pini Gurfil.

    Mitigating the effects of zonal harmonics on the absolute and relative orbits of artificial satellites by using analytical and numerical techniques. Direct application: accurate initialization for cluster flying in order to achieve close proximity during long periods of time, without any control inputs.

    Developing a new model for numerical integration of the absolute orbits in the presence of perturbations in order to improve the accuracy and the speed of integration. Direct application: inertial orbit initialization and control.

    Developing new analytical models for station-keeping and formation-keeping. Direct application: reduced fuel consumption, lifetime extension.

    February 2004 -- January 2010: Technical University Gheorghe Asachi Iasi, Romania. Lecturer in the Department of Theoretical Mechanics.

    Besides teaching, I was carrying out research in fundamental Astrodynamics, nonlinear problems in Classical Mechanics (the Foucault Pendulum, Kepler problem in rotating reference frames, relative orbital motion), fundamental Rigid Body Kinematics (with the focus on attitude kinematics and mathematical models in robotics) and nonlinear differential equations in Applied Mathematics.

    September 1999 -- February 2004: Emil Racovita National College, Iasi, Romania. Lecturer in mathematics.

    Besides teaching, I was preparing the Romanian team for the International Olympiad of Mathematics and I was a committee member of the National Olympiad of Mathematics for the Iasi district.


    October 2006 -- January 2010: Ph.D. in Industrial Engineering, Technical University Gheorghe Asachi Iasi, Romania. Thesis title: Lagrangian and Hamiltonian Formulations in Relative Orbital Dynamics. Applications to Spacecraft Formation-Flying and Satellite Constellations. Advisor: Professor Alfred Braier.

    October 2005 -- June 2006: M.Sc. in Industrial Engineering, Technical University Gheorghe Asachi Iasi, Romania. Dissertation Title: Relative Orbital Motion in Keplerian Force Fields. Applications in Space Rendezvous Missions. Advisor: Professor Daniel Condurache.

    October 1995 -- June 1999: B.Sc. in Pure Mathematics, Alexandru Ioan Cuza University, Iasi, Romania. Dissertation title: Viability of Differential Inclusions. Advisor: Professor Ovidiu Carja.

    Professional Service & Membership

    Reviewer for Journal of Guidance, Control, and Dynamics, published by the American Institute of Aeronautics and Astronautics.

    Since 2008: member of the American Institute of Aeronautics and Astronautics (AIAA)

    Since 2001: member of the Romanian Mathematical Society (Societatea de Stiinte Matematice din Romania) (SSMR)

    Selected Refereed Journal Papers



  • Martinusi, V., Gurfil, P., Solutions and Periodicity of Satellite Relative Motion Under Even Zonal Harmonics PerturbationsCelestial Mechanics and Dynamical Astronomy, Vol. 111, No. 4, 2011, pp. 387-414.


  • Condurache, D.; Martinusi, V., A Quaternionic Exact Solution to the Relative Orbital Motion Problem,AIAA Journal of Guidance, Control, and Dynamics, vol. 33, no.4, 2010, pp.1035-1047.


  • Condurache, D., Martinusi, V., Hypercomplex Eccentric Anomaly in the Unified Solution to the Relative Orbital Motion, Advances in the Astronautical Sciences, Vol.135, 2010, pp. 281-300.


  • Condurache, D., Martinusi, V., Exact Solution to the Relative Orbital Motion in Eccentric OrbitsSolar System ResearchVol. 43, Issue 1, 2009, pp.41-52 . (The Russian Version Title: ТОЧНОЕ РЕШЕНИЕ ЗАДАЧИ ОТНОСИТЕЛЬНОГО ОРБИТАЛЬНОГО ДВИЖЕНИЯ ПО ЭКСЦЕНТРИЧЕСКОЙ ОРБИТЕ ).


  • Condurache D., Martinusi, V., Foucault Pendulum-like problems: A Tensorial ApproachInternational Journal of Non-linear Mechanics, vol. 43, issue 8, 2008, pp. 743-760.


  • Condurache D., Martinusi, V., A Complete Closed Form Solution to the Kepler ProblemMeccanica, Vol. 42, no.5, 2007, pp. 465-476.


  • Condurache D., Martinusi, V., Relative Spacecraft Motion in a Central Force Field, AIAA Journal of Guidance, Control, and Dynamics, vol.30, no.3, 2007, pp. 873-876.


  • Condurache D., Martinusi, V., Kepler’s Problem in Rotating Reference Frames. Part I : Prime Integrals, Vectorial RegularizationAIAA Journal of Guidance, Control and Dynamics, Vol. 30, no.1, 2007, pp. 192-200.


  • Condurache D., Martinusi, V., Kepler’s Problem in Rotating Reference Frames. Part II: Relative Orbital MotionAIAA Journal of Guidance, Control and Dynamics, Vol. 30, no.1, 2007, pp. 201-213.


  • Condurache D., Martinusi, V., Vectorial Regularization and Temporal Means in Keplerian Motion,Journal of Nonlinear Mathematical Physics, Vol.13, No.3, 2006, pp.420-440.


    Selected Refereed Conference Papers



  • Martinusi, V., Gurfil, P., Closed-Form Solutions for Open Orbits Around an Oblate Planet, accepted, AAS/AIAA Space Flight Mechanics Meeting, January 29 – February 2, 2012, Charleston, SC, USA.


  • Martinusi, V., Gurfil, P., New Orbit Propagator for Motion Around an Oblate Planet, accepted, AAS/AIAA Space Flight Mechanics Meeting, January 29 – February 2, 2012, Charleston, SC, USA.


  • Martinusi, V., Gurfil, P., Optimal Satellite Formation Establishment about an Oblate PlanetAIAA Guidance, Navigation, and Control Conference, 8 – 11 Aug 2011, Portland, Oregon, USA.


  • Condurache, D., Martinusi, V., State Space Analysis for the Relative Spacecraft Motion in Geopotential FieldsAIAA Guidance, Navigation, and Control Conference, 8 – 11 Aug 2011, Portland, Oregon, USA.


  • Martinusi, V, Gurfil, P., Closed-Form Solutions for Satellite Relative Motion in an Axially-Symmetric Gravitational FieldAAS/AIAA Spaceflight Mechanics Meeting, New Orleans, LA, USA, February 2011, Paper AAS 11-209


  • Condurache, D., Martinusi, V., Super-integrability in the unperturbed relative orbital motion problem,  AIAA/AAS Astrodynamics Specialist Conference, Toronto, Canada, 2-5 August 2010.


  • Condurache, D; Martinusi, V.,  Analytic Solution to the Relative Orbital Motion Around an Oblate Planet, AIAA Guidance, Navigation and Control Conference and Exhibit, Chicago, Illinois, 10-13 Aug. 2009 .


  • Condurache, D; Martinusi, V., Hypercomplex Eccentric Anomaly in the Unified Solution to the Relative Orbital Motion, AAS/AIAA Astrodynamics Specialist Conference, Pittsburgh, Pennsylvania, 9-13 Aug. 2009 (paper AAS-09-321).


  • Condurache, D.; Martinusi, V., Exact solution to the relative orbital motion in a central force fieldIEEE/AIAA 2nd International Symposium on Systems and Control in Aerospace and Astronautics, Shenzhen, China, 10-12 Dec. 2008, DOI: 10.1109/ISSCAA.2008.4776296.


  • Condurache, D.; Martinusi, V., A Quaternionic Exact Solution to the Relative Orbital MotionAIAA/AAS Astrodynamics Specialist Conference and Exhibit, Honolulu, Hawaii, 18-21 Aug. 2008, AIAA Paper 2008-6764.


  • Condurache, D., Martinusi, V., Exact Solution to the Relative Orbital Motion in Eccentric OrbitsInternational Conference “Analytical Methods of Celestial Mechanics”, Sankt-Petersburg, Russia, 2007.



    Teaching Experience

    February 2004 -- January 2010:

    o        Lectures and tutorials in Theoretical Mechanics, at the Faculties of Electrical Engineering, Computer Engineering and Civil Engineering, at the Technical University Gheorghe Asachi Iasi, Romania.

    o        Lectures and tutorials in Fundamentals of Robotics, Faculty of Computer Engineering, Technical University "Gheorghe Asachi", Iasi, Romania.

    o        Lectures and tutorials in System Modelling and Simulation, Faculty of Electrical Engineering, Technical University "Gheorghe Asachi", Iasi, Romania.

    o        Lectures and tutorials in Simulation of Mechanical Systems, Faculty of Automatic Control and Computer Engineering, Technical University "Gheorghe Asachi", Iasi, Romania.

    o        Tutorials in Linear Algebra and Analytic Geometry, Faculty of Electrical Engineering, Technical University "Gheorghe Asachi", Iasi, Romania.

    September 1999 -- February 2004:

    o        Lectures in Mathematics, Emil Racovita National College, Iasi, Romania.

    Computer Skills

    Matlab, STK (Satellite ToolKit), Maple, Mathematica, Scilab.

    Language Skills

    English -- spoken (excellent), written (excellent), reading (excellent)

    French -- spoken (excellent), written (excellent), reading (excellent)

    Italian -- spoken (basic), written (basic), understanding (good)

    Hebrew -- basic conversational level


    Professor Pini Gurfil, Technion -- Israel Institute of Technology.
    E-mail: pgurfil(at)

    Professor Daniel Condurache, Technical University "Gheorghe Asachi", Iasi, Romania.
    E-mail: daniel.condurache(at)

    Dr. Alexander Kogan, Technion -- Israel Institute of Technology.
    E-mail: akogan(at)

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