CV: Flight Systems Engineer - GNC/AOCS

 


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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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