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  • CV: Flight Systems Engineer - GNC/AOCS

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    Personal information
     Name:<withheld>
     Age:<withheld>
     Country:<withheld>
     Location:<withheld>
    Contact information
     Email:<withheld>
     Phone:<withheld>
     Mobile:<withheld>
    Candidate Profile
     Date Submitted:02-02-2015
     Last Modified:03-01-2017 (03:29)
    Job information
     Current job:Flight Systems Engineer - GNC/AOCS
     Employment Term:Permanent
     Job location:Anywhere
     Date available:within 3months
     Industry:
     KeywordsSpace Systems, GNC, AOCS, Multi-Body Dynamics, SW, Software, Integration, Validation and Testing
    CV

    PERSONAL INFORMATION

    Sex Male | Date of birth 18/12/1989 | Nationality Italian

     

    JOB APPLIED FOR/

    PREFERRED JOB

    GNC System Engineer, Multibody Dynamics Simulation Engineer, Control Systems Engineer, Simulators Software Engineer, Flight Dynamics Engineer.

     

     

     

    WORK EXPERIENCE

     

     

    DEIMOS Engenharia                        August 2015 to now     

    (1 year)

     

    Context: Space Systems-GNC, Multibody Dynamics, Simulation Software

    Projects: EUCLID, PROBA-3, LEOSWEEP, CLGADR

    Prime: ESA

    Consortium: SENER, TAS-I, AIRBUS

    Responsibility: Study and development engineer

     

    Work done:

    EUCLID

    Attitude Determination and Control sensors and actuators models development, validation and testing.

    PROBA-3

    Attitude Determination and Control sensors and actuators models development for rendezvous technology IOD mission.

    LEOSWEEP

    Navigation unit development support.

    CLGADR

    Multi-body dynamics modelling: flexible appendages and sloshing.

     

    Technical environment

    Technologies

    ANSI C

    Tools

    Visual Studio, MatLab®, Simulink®

     

    ESA                                       April to July 2015     

    (4 months)

     

    Context: Multibody Dynamics, Simulation Software

    Project: eDeorbit (Phase-A): flexible Active Space Debris Removal tools (Robotic Arm and Nets)

    Responsibility: Validation and Testing engineer

     

    Work done:

    Maintenance of the software

    Verification and Validation of the simulator

    Unit Testing

     

    Technical environment

    Technologies

    ANSI C

    Tools

    MatLab®, Simulink®, SimMechanics™

     

     

    TAS-F                                           January to April 2015     

    (4 months)

     

    Context: Multibody Dynamics, Simulation Software

    Project: eDeorbit (Phase-A): flexible Active Space Debris Removal tools (Nets)

    Prime: ESA

    Responsibility: Study and development engineer

     

    Work done:

    Modelling the interface between the tether and the debris (Net), to let TAS-F reuse the GNC already developed for the harpoon solution, to study the controllability of the system.

     

    Technical environment

    Technologies

    ANSI C

    Tools

    MatLab®, Simulink®

     

    GMV                                     January to December 2014     

    (1 year)

     

    Context: Multibody Dynamics, Simulation Software

    Project: eDeorbit (Phase-A): flexible Active Space Debris Removal tools (Nets)

    Prime: ESA

    Responsibility: Study and development engineer

     

    Work done: (to detail)

    Build-up a complete and autonomous simulator for NET-ADR (Net based Active Debris Removal)

    Development of the mathematical models for the system

    Multibody dynamics

    Collision detection

    Contact dynamics

    Implement computationally efficient numerical solutions.

    Set up the requirements and specifications for experimental testing of the system (Net deployment dynamics) in zero-g environment (parabolic flight), to validate the numerical simulator after 3D reconstruction (image processing).

     

    Results:

    Journal publications

    DYNAMICS ANALYSIS AND GNC DESIGN OF FLEXIBLE SYSTEMS FOR SPACE DEBRIS ACTIVE REMOVAL, ACTA Astronautica (Feb 2015).

    Multibody dynamics driving GNC and system design in tethered nets for active debris removal, Advances in Space Research, Ms. Ref. No.: ASR-D-15-00731.

    Conferences presentations:

    Multibody dynamics driving GNC and system design in tethered nets for active debris removal, AAS/AIAA Astrodynamics Specialist Conference (Vail, Colorado, 10 August 2015).

    NET CAPTURING OF TUMBLING SPACE DEBRIS: CONTACT MODELLING EFFECTS ON THE EVOLUTION OF THE DISPOSAL DYNAMICS, 13th Symposium on Advanced Space Technologies in Robotics and Automation (ASTRA, May 2015).

    NET-BASED PAYLOAD ON BOARD AVUM ENHANCED PLATFORM TO EFFICIENTLY REMOVE LARGE DEBRIS FROM LOW EARTH ORBITS, IAC (Toronto, Oct 2014).

    DYNAMICS ANALYSIS AND GNC DESIGN OF FLEXIBLE SYSTEMS FOR SPACE DEBRIS ACTIVE REMOVAL, IAA - DYCOSS (Rome, Feb 2014).

     

    Technical environment

    Technologies

    ANSI C

    Tools

    MatLab®, Simulink®

     

     

    EDUCATION AND TRAINING

     

    From 2011 to 2014

     

    Organization

    Location

    Teaching Language

    Subjects and Skills

    M.Sc. - Space Engineering

    Politecnico di Milano

    Milan 20100 – MI – Italy

    110/110 cum laude  

     

    English

    Space Mission Analysis and Design

    Orbital Mechanics

    S/C Attitude Dynamics and Control

    Technologies of Control Systems

    Telecommunication Systems

    Fundamentals of Thermochemical Propulsion

    Space Propulsion and Power Systems

    Heat Transfer and Thermal Analysis

    Aerothermodynamics

    Aerospace Structures

    Dynamics and Control of Aerospace Structures

    From 2008 to 2011

     

    Organization

    Location

    Teaching Language

    Subjects and Skills

    B.Sc. - Aerospace Engineering

    Politecnico di Milano

    Milan 20100 – MI – Italy

    Italian

    Flight Dynamics and Orbital Mechanics

    Numerical Computation (Matlab/Simulink)

    Information Technology  (C++)

    Automation and Control

    107/110 

     

    Technical Drawing (Solid Edge, Solid Works, Inventor)

    Structures and Dynamics

    Aeronautical Systems

    Air Traffic Control

    Air breathing Engines and Fundamentals of Space Propulsion  

    From 2003 to 2008

     

    Organization

    Location

    Teaching Language

    Scientific High School Diploma

    Liceo Scientifico “Galileo Ferraris”

    Varese 21100 – VA – Italy

    100/100  

     

    Italian

     

     

    PERSONAL SKILLS

     

     

    Mother tongue

    Italian

    Other language

    English

    Communication skills

    Good communication skills gained through my 2-year master degree in English, 1-year Master Thesis work and worldwide conferences (IAA at Washington and IAC at Toronto) where I presented papers derived from my Master Thesis work and secondary works.

     

    Organizational / managerial skills

    Well-organised, able to prioritise and manage several tasks in parallel.

    Leadership (6-month team leader of a Phase-A study involving 10 people and 6 months  team leader of a 5-people group for a Concept Design study presented at IAA in Washington).

     

    Job-related skills

    Self-starter, able to work independently with little supervision.

    Team-player, able to interface with technical and management personnel.

     

    Computer skills

    Proficient user of MatLab (>5 years, ongoing)

    Proficient user of Simulink (>5 years, ongoing)

    Good knowledge of SimMechanics

    Basic knowledge of C++

    Basic Knowledge of  MSC Nastran-Patran

    Proficient user of Autodesk Inventor, Solid Edge, Solid Works

    Good knowledge of Linux and UNIX OS

    Good knowledge of WINDOWS OS

    Good command of LaTeX

    Proficient user of Microsoft Office™ tools

     

    Other skills

    Scout master

    Alpine skiing and Free ride

    Racing bike

    Home brewing

     

    Driving license

    B

     

    ADDITIONAL INFORMATION

     

     

     

     

    Academic Projects

     

    S.Salvi et al., SWING: SPACE WEATHER INVESTIGATION, Space Mission Analysis and Design

    Phase A study of a future Formation Flying mission to replace the European CLUSTER. Team work of 10 people. Flight dynamics and AOCS specialist and team leader roles covered. Optimization of the flight dynamics, minimizing the maneuvers cost in order to ensure predefined formation geometries and relative distances between the satellites in specific regions of the magnetosphere (polar casps and magnetic tail). Integration of scientific instruments for plasma and magnetic field analyses including 10m axial booms and 35m and 3.6m radial booms. AOCS design to stabilize the attitude and satisfy the scientific and TMTC pointing budgets.

    S.Salvi, AOCS simulator for a 1U CubeSat, Spacecraft Attitude Dynamics and Control

    Design, build-up and simulation of the AOCS subsystem of a 1U CubeSat, through magnetic sensors and magnetorquers. Attitude stabilization and optimization of the control.

    Master Thesis

    S.Salvi, FLEXIBLE DEVICES FOR ACTIVE SPACE DEBRIS REMOVAL: THE NET SIMULATION TOOL, MSc thesis, Space Engineering (Milan, 2014)

    Design of a complete and physically based mathematical model (NeST), to simulate the Tether-Net ADR system dynamics during the capture and the disposal phases. Reference scenario is the Envisat deorbiting. This work starts from previous concept studies developed at Politecnico di Milano, experimentally tested, but never simulated before. A particular attention is put on the flexible multibody modelling. Noteworthy is the built-in collision detection and contact algorithms, optimized ad-hoc to increase the simulator performance. Further numerical and model optimizations are presented and validated, analyzing their impact on the precision and the benefits on the computational speed. The simulator is finally numerically validated and an intensive analysis campaign is done to characterize the Tether-Net system dynamics, with the ultimate aim of scaled tests in micro gravity environments.

    Conferences

    S. Salvi, R. Benvenuto, M. Lavagna, Multibody dynamics driving GNC and system design in tethered nets for active debris removal, presented at AAS/AIAA  Astrodynamics Specialist Conference (Vail, Colorado, 10 August 2015) .

     

    S. Salvi, R. Benvenuto, M. Lavagna, NET CAPTURING OF TUMBLING SPACE DEBRIS: CONTACT MODELLING EFFECTS ON THE EVOLUTION OF THE DISPOSAL DYNAMICS, 13th Symposium on Advanced Space Technologies in Robotics and Automation (ASTRA, May 2015)

     In this paper, through the exploitation of a multibody dynamics simulation tool (NEST), critical phases as wrapping and towing are analyzed to address the tethered-stack controllability. It is shown how the role of contact modelling is fundamental to describe the coupled dynamics: it is demonstrated how friction between the net and a tumbling target allows reducing its angular motion, stabilizing the system and allowing safer towing operations (in contrast with available simplified multibody simulators).

    M. Lavagna, R. Benvenuto, S. Salvi, NET-BASED PAYLOAD ON BOARD AVUM ENHANCED PLATFORM TO EFFICIENTLY REMOVE LARGE DEBRIS FROM LOW EARTH ORBITS, IAC (Toronto, Oct 2014)

    The paper presents in details the design of a net-based debris capturing payload, to be embarked on an AVUM based chaser, specifically adapted for large satellites removal from LEO. The study run under ESA support, in collaboration with ELV SpA. In particular, it is discussed in details the numerical simulator developed at Politecnico di Milano (NEST and MUST/GAST) to model the net dynamics from its launch to the target wrapping and drive the design of the flexible components in the payload. A multi-body constrained dynamics has been implemented to represent flexible elements. The results obtained are discussed to assess limitations and advantages in exploiting such a high thrust unit for ADR flexible systems. Maturity of the proposed technology and development roadmap are also presented.

    R. Benvenuto, S. Salvi, M. Lavagna, DYNAMICS ANALYSIS AND GNC DESIGN OF FLEXIBLE SYSTEMS FOR SPACE DEBRIS ACTIVE REMOVAL, IAA - DYCOSS (Rome, Feb 2014)

    Via numerical simulations using a multi-body dynamics simulation tool developed at Politecnico di Milano – Department of Aerospace Science and Technology (NEST and MUST/GAST), this paper shows that tethered-net systems are a promising technology to capture and remove space debris and discusses the main difficulties that are likely to take place during capture and disposal phases, particularly from a GNC point of view.

    S.Salvi et al., aXess – Architecture for the eXploration of the Edge of the Solar System,  IAA - Space Exploration Conference (Washington, Jan 2014)

         It is proposed a flexible and feasible architecture for a class of missions aiming at exploring the edge of our solar system in a reasonable time. This paper examines the problem from a strictly engineering point of view, providing parameterized solutions according to the desirable scientific constraints.  

    Publications

     

    R. Benvenuto, S. Salvi, M. Lavagna, DYNAMICS ANALYSIS AND GNC DESIGN OF FLEXIBLE SYSTEMS FOR SPACE DEBRIS ACTIVE REMOVAL, ACTA Astronautica (Feb 2015).

    Via numerical simulations using a multi-body dynamics simulation tool developed at Politecnico di Milano, this paper shows that tethered-net systems are a promising technology to capture and remove space debris and discusses the main difficulties that are likely to take place during capture and disposal phases, particularly from a GNC point of view.

     S. Salvi, R. Benvenuto, M. Lavagna, Multibody dynamics driving GNC and system design in tethered nets for active debris removal, Advances in Space Research, AD - Astrodynamics and Space Debris ASR-D-15-00731R1 (April 2016)

    In the paper, a six degrees of freedom multibody dynamics simulator is presented, developed at Politecnico di Milano. Critical phases as impact and wrapping are analyzed by simulation to address the tethered-stack controllability. It is shown how the role of contact modelling is fundamental to describe the coupled dynamics: it is demonstrated, how friction between the net and a tumbling target allows reducing its angular motion, stabilizing the system and allowing safer towing operations. Moreover, the so-called tethered space tug is analyzed: after capture, the two objects are connected by the tethered-net flexible link. The critical modes prevention during this phase, by means of a closed-loop control synthesis, is shown. Finally, the connection between flexible dynamics and capture system design is highlighted, giving engineering answers to most challenging open points to lead to a ready to flight solution.


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