Clean Space Industrial Days & AeroThermoDynamics Design for Demise Workshop

24 Oct 2017, 08:00 → 26 Oct 2017, 19:00 UTC

Erasmus building (ESTEC)

Clean Space industrial days

The Clean Space industrial days aim at providing an insight to the technological advancement achieved to date in the fields of ecoDesign for space, technologies for Space Debris Mitigation (SDM) and Active Debris Removal (ADR).

Through its Clean Space initiative, ESA is pioneering an eco-friendly approach to space activities. On the ground, that means adopting greener industrial materials, processes and technologies. In space, it means preserving Earth’s orbital environment as a safe zone, free of debris.

Clean Space is considering the entire lifecycle of space activities, from the early stages of conceptual design to the mission’s end of life – and even beyond, to removal of space debris. Clean Space has three branches, reflecting its mission to assess the environmental impact of Agency programmes as a first step to finding ways to address them in future, and contributing to a more sustainable and competitive European space industry:

• ecoDesign: designing to address environmental impacts and foster green technologies;
• CleanSat: designing to reduce the production of space debris;
• e.Deorbit: removing a large piece of space debris from orbit.

ESA has pioneered ecoDesign for space by performing environmental life-cycle assessments of its launchers and missions. Applying LCA to space activities is a first step towards a cleaner space sector. Based on this work, ESA has developed a space-specific handbook to perform LCA. A great challenge is to use the results of the LCAs to develop cleaner technologies which will be at least as performing than existing technologies. The industrial days will be an opportunity for the European space industry to acquire knowledge on ecoDesign for space missions.

ESA is globally leading the pursuit for Active Debris Removal through its e.Deorbit mission. The objective is to catch a large spacecraft in Low Earth Orbit and to bring it back to Earth in a controlled manner, in order to reduce the risk of growth of space debris. Through this mission, European industry is developing cutting edge technologies for monitoring, rendezvous, capture and deorbiting of space systems.

The CleanSat project started in 2014 and aims to develop technologies to comply with space debris regulations and avoid the generation of new debris from future missions. ESA’s CleanSat project seeks to steer this evolution in a coordinated manner, in direct collaboration with Europe’s leading satellite integrators and their suppliers. By developing technologies that enable future satellites to comply with standards, Europe’s space industry will have an international competitive advantage. CleanSat is developing building blocks that employ innovative technologies to meet space debris mitigation requirements, and that can be adopted on a systematic basis by a variety of satellite platforms.

By bringing together a variety of stakeholders including the public sector, industry and new potential participants, the Clean Space Industrial Days will be a unique opportunity for a broad discussion on the goals and strategies for e.Deorbit, CleanSat and ecoDesign and will be key to determine the next steps. This will be achieved through presentations from both industry and ESA on the state-of-the-art of the current activities and leaving opportunities to side meetings on specific topics as necessary.

AeroThermoDynamics Design for Demise Workshop

The workshop is organised by the “AeroThermoDynamics Design for Demise” (ATD3) Working Group settled by ESA and CNES to understand the aerothermodynamic process which contribute to reduce the amount of debris surviving re-entry. The Workshop is a regular (every 2 years) forum at European level to facilitate the discussions (at technical and scientific level), collect and disseminate information, propose and plan new topics/activities (roadmap definition and coordination) of all relevant aerothermodynamics aspects which governs the demisability problem and hence, increase the confidence on the tools used for that.

In this frame, a limited number of test cases will be validated with respect to efficiency and accuracy of different numerical tools, from low to high fidelity. The workshop provides the opportunity to compare ground facilities and measurement techniques, physical modelling, to explore Uncertainty Quantification (UQ) approaches and verification & validation process.

Agenda of the ATD3 WS ATD3_WS_2017_Agenda.pdf

Agenda of the CSID CSID_Agenda.pdf

ATD3 presentations ATD3_presentations_at_CSID.zip

Tuesday 24 October

Plenary: Welcome and Openings

1 Opening Speech

2 Market for ADR

Speaker: Alberto Accogli (Leoni Coporate Advisors)

Slides LCA-Accogli_-_Clean_Space_Industrial_days,_Potential_Markets_opened_by_ADR_missions.pdf

3 Critical raw materials and their role in the European aerospace and energy sectors

Speaker: Evangelos Tzimas (European Commision - DG Joint Research Centre)

Slides 2017_CSID_Tzimas_CriticalRawMaterials_their_RoleintheEuropeanAerospaceEnergySectors.PDF

4 Space Debris Mitigation implementation in Earth Observation Missions

Speaker: Guido Levrini (ESA)

Slides 2017_CSID_Levrini_SD_ImplementationMitigationInEOMissions.pdf

5 Clean Space overview

Speaker: Luisa Innocenti (ESA)

Slides 2017_CSID_Innocenti_CleanSpace_ESAinitiativeToMinimiseEnvironmentalImpactsofSpaceActivities.pdf

11:00 Coffee break

CleanSat: Technology priorities for Integrators

6 Large System Integrator SDM technology priorities

Speakers: Daniel Briot (ADS), Mr Gerrit Proffe (OHB System AG), Lilith Grassi (TAS)

Slides 2017_CSID_Airbus_OHB_TAS_Cleansat_24102017.pdf

7 Technology priorities for small satellites

Speaker: Peter Holsters (QinetiQ)

Slides 2017_CSID_Peter_Holsters_QinetiQ_Space_Technology_priorities_for_small_satellites.pdf

8 Ariane 6 approach and solutions regarding space debris mitigation

Speaker: Nathalie Dias (Ariane Group)

Slides 2017_CSID_DIAS_ArianeGroup_Ariane_6_safety_derivation.pdf

EcoDesign: Environmental Impact of Space missions

9 EcoDesign at ESA

Speaker: Ms Sara Morales Serrano (ESA)

Slides EcoDesign_at_ESA_2017_CSID_distribute.pdf

10 LCA of launchers environmental impact

Speaker: Augustin Chanoine (Deloitte)

Slides 2017_CSID_Chanoine_LCA_launcher_space_missions_FV.PDF

11 LCA of satellites environmental impact

Speaker: Augustin Chanoine (Deloitte)

Slides 2017_CSID_Chanoine_LCA_launcher_space_missions_FV.PDF

12 Question & Answers

e.Deorbit: System

13 e.Deorbit & SSV

Speaker: Mr Robin Biesbroek (ESA)

Slides 2017_CSID_e.Deorbit_and_SSV_-_Biesbroek_Wolahan.pdf

14 Results of the Airbus DS led e.Deorbit Phase B1 ESA study

Speaker: Dr Stéphane Estable (Airbus)

Slides 2017_CSID_AirbusDS_Results_eDeorbit_PhaseB1_Study-_v1.pdf

15 Space Debris Attitude Motion Measurements and Modelling, ENVISAT Case

Speaker: Jiri Silha (University of Bern)

Slides 2017_CSID_Silha_AIUB_Space_Debris_Attitude_Motion_Measurements_and_Modelling_ENVISAT_case.pdf

16 Final Pre-Flight Update for the Remove Debris ADR Mission

Speaker: Jason Forshaw

Slides 2017_CSID_Forshaw_Surrey_RemoveDebris_v1.0.pdf

13:00 Lunch break

CleanSat: Power Passivation systems

17 State of the art overview

Speaker: François Bausier (ESA)

Slides Spacecraft_electrical_passivation_-_Overview.pdf

18 Battery safety assessment and testing

Speaker: Bruno Samaniego Lopez (Airbus Defence and Space)

Slides 201710_-_ESA_CleanSpace_Industrial_Days_-_Battery_Passivation.pdf

19 Solar Array Passivation based on the galvanic isolation

Speaker: Vincent Lempereur (TAS)

Slides 2017_CSID_TASB_Solar_Array_Passivation_based_on_the_galvanic_isolation.pdf

20 Assessment of risk of debris generation due to battery failure in cubesats

Speaker: Alessandro Chiesa (Aviospace)

EcoDesign: Ecodesigning a space mission

21 EcoDesign: Towards Life Cycle Sustainability of Space Systems

Speaker: Mr Andrew Wilson (University of Strathclyde)

Slides 2017_CSID_AndrewWilson_UniversityOfStrathclyde_EcodesignTowardsLifeCyleSustainabilityOfSpaceSystems.pdf

22 Space OPERA: integrating environmental performance into concurrent design

Speaker: Augustin Chanoine

Slides 2017_CSID_Chanoine_SPACE_OPERA_FV.PDF

23 Lessons learned from the Sentinel 3 LCA and Applications to a GreenSat

Speaker: Mr Nicolas Thiry (Thales Alenia Space)

Slides 03_Greensat_CS_IndustrialDays2017_Thiry.pdf

24 Ecodesign applied to ESA’s PROBA-Vegetation satellite

Speaker: An vercalsteren (Vito NV)

Slides 04_2017_CSID_Vercalsteren_An_VITO_Ecodesign_applied_to_ESAs_PROBA-V_satellite.pdf

e.Deorbit: Space Servicing Vehicle

25 Space Transportation Bus: An opporunity for new possibilities of Space Exploitation or Space Tug

Speaker: Mrs carole billot (thales alenia space france)

Slides 2017_CSID_Billot_TASF_ADR.pdf

26 Space Tug

Speakers: Mr Gerrit Proffe (OHB System AG), Marc Scheper (OHB)

Slides 2017_CSID_Proffe,Gerrit_OHB_Space_Tug.pdf

27 Space Utility vehichle

Speaker: Eugenio Ferreira (Airbus)

Slides 2017-10-24_-_Space_Tug_for_Cleanspace_Industrial_Days_v2.pdf

28 Utilising the Space Drone spacecraft for ADR

Speaker: Ms Danna Linn Barnett (Effective Space Solution)

Slides 2017_CSID_LinnBarnett_EffectiveSpaceSolutions_SpaceDroneADR2.pdf

15:30 Coffee break

CleanSat: Propulsion Passivation Systems

29 System impacts of propulsion passivation

Speaker: Andreas Gernoth (ESA)

Slides 2017_CSID_Gernoth_ESA_System_impacts_of_propulsion_passivation.pdf.pdf

30 SMA Valve for fluidic passivation

Speaker: Mr Stephan Kraus (ariane group)

Slides 2017_CSID_KRAUS_ArianeGroup_SMA_Valve.pdf

31 Life time extension of pyro actuations for passivation

Speaker: Pierre Joanny (Dassault Aviation)

Slides 2017_CSID_JOANNY_Dassault_Life_Time_Extension_for_passivation.pdf

32 Passivation device for Spacecraft Propulsion System

Speaker: Mr DENIS DILHAN (CNES)

Slides 2017_CSID_DILHAN_CNES_uperforator.pdf

33 Sentinel-1 Space Debris Mitigation

Speaker: Svein Lokas (ESA)

Slides 2017_CSID_LOKAS_ESA_Sentinel_1_Space_Debris_Mitigation.pdf

EcoDesign: Atmospheric impact

34 Impacts of space vehicles' launch and re-entry on the ozone layer and climate

Speaker: Slimane Bekki (CNRS)

Slides 01_2017_CSID_Bekki_CNRS.pdf

35 Atmospheric impact of spacecraft demise

Speaker: Lilith Grassi (Thalès Alenia Space)

Slides 02_2017_CSID_TASI_ARA-Atmospheric_Re-entry_Assessmentv2.pdf

36 Experimental Modelling of Alumina Particulate in Solid Booster

Speaker: Dominik Saile (DLR)

Slides 2017_CSID_SAILE_DLR_EMAP.pdf

37 Impact on atmosphere and ocean

Speaker: Sophia Klink (Université de Montpellier)

Slides 04_LANSCHDESK_cleantech_Noordwijk_october_24th_2017_FV.pdf

38 Questions & Answers

e.Deorbit: GNC

39 ESA GNC Technologies and Test Beds for ADR and Space Tug Applications

Speaker: Dr Guillermo Ortega (ESA)

Slides ESA_GNC_Technologies_and_Test_Beds_for_ADR_and_Space_Tug_Applications.pdf

40 On-ground testing of vision-based navigation for non-cooperative rendezvous targets using cameras in the visible and thermal infrared range

Speaker: Manuel Sanchez Gestido (ESA)

Slides CleanSpace_IndustryDays_2017_v_08.pdf

41 Investigation of Detumbling Techniques

Speaker: Fernando Gandia (GMV)

Slides 2017_CSID_FernandoGandia_GMV_DETUMBLING.pdf

42 COMRADE

Speaker: Fernando Gandía Abellán (GMV)

Slides 2017_CSID_FernandoGandia_GMV_COMRADE.pdf

43 HIPNOS: High Performance Avionics Solution for Advanced and Complex GNC Systems for ADR

Speaker: Mr David Gonzalez-Arjona (GMV Aerospace and Defence)

Slides 2017_64_ARJONA-LENTARIS_GMV_HIPNOS.PDF

Plenary: SPACE TUG ECONOMICS ROUND TABLE

44 Space Tugs economics Round Table

This discussion will cover a number of key issues to this emerging niche market such as the challenges, competition, cost uncertainties, tug use case analysis.

19:00 Dinner

Wednesday 25 October

Plenary: The legal aspects of space debris

CleanSat: Design for Demise - characterization and simulation

45 Overview of CNES SRL activities related to the compliance of the satellites with French Space Act

Speaker: Pierre Omaly (CNES)

Slides 2017_CSID_Omaly_OverviewCNES_SRLactivitiesComplianceSatellitesLOS.pdf

46 Characterisation of the behaviour of typical spacecraft materials exposed to re-entry environment conditions

Speaker: Benoit Bonvoisin (ESA)

Slides 2017_CSID_Bonvoisin_CharacterisationBehaviourTypicalSpacecraftsMaterialExposedReentryEnvironmentConditions.pdf

47 Demisable materials database

Speaker: Dr James Merrifield (Fluid Gravity Engineering)

Slides 2017_CSID_Merrifield_DemisableMaterialsDatabase.pdf

48 The Horizon 2020 ReDSHIFT Project: 3D printing of demisable spacecraft

Speaker: Dr Alessandro Rossi (IFAC-CNR)

Slides 2017_137_ROSSI_IFAC_ReDSHIFT.pdf

49 Reentry tools: DRAMA upgrade and reentry tumbling state with IOTA

Speaker: Ronny Kanzler (HTG)

Slides 2017_CSID_Kanzler_HTG_Reentry_tools_DRAMA_upgrade_and_reentry_tumbling_state_with_IOTA.pdf

50 Demise Observation Capsule: Progress update

Speaker: Trevor Watts (Science & Technology B.V)

Slides 2017_CSID_Watts_S&T_DOC-PRES-ST-0044-v1.0_DOC.pdf

EcoDesign: LCA SPACE PROPELLANTS ROUND TABLE

Convener: Johan Berg Pettersen

51 LCA space propellants Round Table

This session will begin by presenting an ESA study which performed the Life Cycle Assessment of space propellants. The methodology and results will be presented followed by open discussion afterwards regarding implications for green propellants, major considerations for reducing environmental impact, and scale up from lab to industrial scale.

e.Deorbit: GNC

52 Technology building blocks and ongoing activities regarding spectral sensing for relative navigation

Speaker: Dr Marco Esposito (cosine Research BV)

Slides 01_20171025-cosine_Clean_space_v1.0.pdf

53 The RVS3000 and the RVS 3000-3D LIDAR Sensors: Recent Technological Advances and Future Applications

Speaker: Florian Kolb (Jena Optronik)

Slides 2017_CSID_Kolb_RVS3000.pdf

54 ORCO: End-to-end On Ground System Validation of combined technologies for Debris Removal

Speaker: Fernando Gandía Abellán (GMV)

Slides cleanSpace_ORCO_presentation.pdf

55 VIMANCO: Vision Manipulation of non-cooperative objects

Speaker: Vassilios Papantoniou (HTR)

Slides 90_VIMANCO_TRA.pdf

56 Using Infrared-base relative navigation for Active Debris Removal

Speaker: Özgün Yilmaz (University Cranfield, UK / ESA)

Slides 20171025_CleanSpaceIndustrialDays.pdf

57 Navigation on a chip

Speaker: Florian Kolb (Jena Optronik)

Slides 2017-10-25_CSID_NavOnChip_JenaOptronik.pdf

11:30 Coffee break

CleanSat: System level Design for Demise

58 Multidisciplinary assessment of D4D techniques

Speaker: Ronny Kanzler (HTG)

Slides 2017_CSID_Kanzler_HTG_Multidisciplinary_assessment_of_D4D_techniques.pdf

59 D4OP – Demisability for Optical Payloads

Speaker: Simone Bianchi (TAS)

Slides 2017_CSID_SimoneBianchi_ThalesAleniaSpace_D4OP_v2.pdf

60 Demisability of Optical Payloads

Speaker: Dr James Beck (Belstead Research Ltd)

Slides 2017_CSID_Beck_BRL_DemisabilityOfOpticalPayloads.pdf

61 Identification of re-entry critical launch vehicle components

Speaker: Mr Stijn Lemmens (European Space Agency)

Slides 2017_CSID_LemmensSimons_FirstDesign4DemiseAnalysis4LaunchVehicles.pdf

EcoDesign: SINGLE SCORE ROUNDTABLE

62 Single Score Round Table

Within Life Cycle Assessment, certain environmental indicators may be of more interest than others. This session aims to make a prioritisation to define the most important environmental indicators and to discuss weighting factors between them in order to arrive at a 'single score for space' agreed upon by space sector actors.

e.Deorbit: Robotics

63 ESA Robotics for ADR and Space Tug Applications

Speaker: Gianfranco Visentin (ESA)

64 Development of a gripper and the associated MGSE equipment

Speaker: Mr Jaroslaw Jaworski (PIAP Space)

Slides PIAP_LAR_Gripper_v2.pdf

65 PREDATOR : ENVISAT capturing strategy using a STEWART platform based gripper

Speaker: Stelios Skevakis (HTR)

Slides Predator_[ESTEC]_v08_171021_final.pdf

66 Using a plenoptic camera for vision based navigation in an Active Debris Removal scenario

Speaker: Jonas Philipp Lüke (Universidad de La Laguna)

Slides USING_A_PLENOPTIC_CAMERA_FOR_VISION_BASED_NAVIGATION.pdf

13:10 Lunch break

CleanSat: Platform equipment Design for Demise

67 Design and breadboarding of technologies for early breakup of spacecraft

Speaker: Mr Gerrit Proffe (OHB System AG)

Slides 2017_CSID_Proffe,Gerrit_OHB_D4DBB.pdf

68 Demisable joint

Speaker: Lilith Grassi (TAS)

Slides 2017_CSID_TASI_DJ-Demisable_Joint.pdf

69 Demisable joints CleanSat study

Speaker: Mr Stephan Kraus (ariane group)

Slides 2017_CSID_KRAUS_ArianeGroup_Early_Breakup_Structures_001.pdf

70 Questions & Answers

EcoDesign: REACH and Obsolescence Risks

71 Can citric acid be used as an environmentally friendly alternative to nitric acid passivation for steel? An experimental and Life Cycle Assessment (LCA) study

Speakers: Christopher Zimdars (Quantis), Usoa Izagirre (TECNALIA)

Slides 01_2017_CSID_Usoa_Izagirre_TECNALIA_Christopher_Zimders_QUANTIS_Citric_acid_passivation_and_LCA.pdf

72 Alternative pretreatments to aluminium

Speaker: Ana G. Pereira (ISQ)

Slides 02_2017_CSID_Ana_Cabral_ISQ_Alternative_pre-treatments_to_aluminium_final.pdf

73 REACH replacement of pyrovalve initiator powder

Speaker: Pierre Joanny (Dassault Aviation)

Slides 03_2017_CSID_JOANNY_Dassault_REACH_Treatment.pdf

74 How to assess REACH-related obsolescence risk in early design?

Speakers: Augustin Chanoine (Deloitte), Tim Becker (ReachLaw)

Slides 04_CS_Industrial_Days_-_REACH_into_LCA-Final.pdf

75 Natural fiber composites for space applications

Speaker: Mr Julien Rion (Bcomp SA)

Slides 05_2017_CSID_Rion_Bcomp_Natural_fibre_composite.pdf

e.Deorbit: Robotics

76 Pre-Development of a Clamping Mechanism

Speaker: Mr Iñigo Sard (AVS)

Slides 20171023_AVS_Pre-development_clamping_mechanism_eDeorbit.pdf

77 Design and Performance Analysis of the DLR robot manipulator arm for the e.Deorbit mission

Speaker: Roberto Lampariello (DLR)

Slides Industrial_Days_edeorbit_2017_10_20_Jaekel.pdf

78 Validation Methodology of the Rendezvous and Grasping Maneuver on the Planar Air-Bearing Microgravity Simulator

Speaker: Dr Karol Seweryn (Space Research Centre PAS (CBK PAN))

Slides Seweryn_etal_CS2017_v4.pdf

79 ASSIST

Speaker: Dario Mora

Slides GMV-ASSIST-CleanSpace.pdf

15:30 Coffee break

CleanSat: Platform equipment Design for Demise

80 Containment tether

Speaker: Mr Gerrit Proffe (OHB System AG)

Slides 2017_-_CSID_-_ESA_-_Demisability_Assessment_of_Reaction_Wheels.pdf

81 Demisability Assessment of Reaction Wheels

Speaker: Geert Smet (ESA)

82 Demisable materials compatibility for Tanks

Speaker: Adam Watts (Nammo Westcott Ltd)

Slides Demisable_Materials_Compatability_for_Tanks.pdf

83 Demisable propellant tank design

Speakers: Renato Bellarosa (Airbus), Sylvain Goek (Ariane Group)

Slides 2017_CSID_Renato_Bellarosa_Airbus_Defence_and_Space_HO_Propulsion_Systems_Structural_Integrity.pdf

84 Questions & Answers

EcoDesign: Space Sustainability

85 Space Sustainability in the 21st Century

The presentation will explain the different initiatives in which the United Nations Office for Outer Space Affairs is involved regarding sustainability of outer space and how these initiatives are related to UNISPACE+50, the special segment of the United Nations Committee on the Peaceful Uses of Outer Space and the Space 2030 agenda.

Speaker: Jorge Del Rio Vera (UNOOSA)

Slides 01_23102017_CleanSpaceIndustryDays.pdf

86 Spacecraft design indicator fo space debris

Speaker: Dr Camilla Colombo (Politecnico di Milano)

Slides 02_2017_CSID_ColomboChanoine_designindicatorESAstudy.pdf

87 Towards the consideration of space debris within the Life Cycle Assessment Framework

Speaker: Mr Thibaut Maury (Ariane Group / Univ. Bordeaux)

Slides 03_CSID_MAURY_SpaceDebris_Session-Ecodesign16h.pdf

88 Simulating the Beginning of the Congestion-Tipping Period for Earth Orbits

Earth Orbits are a finite resource. Understandably, this statement is difficult to fathom given the vastness of space, yet Earth orbits are not infinite regions in this vastness. This study proves that Earth orbits are a limited, natural resource and goes on to construct a quantitatve model to estimate the beginning of the period beyond which it would be detrimental for satellites to continue mission operations in an Earth orbit due to increasing population (spacecrafts + space debriis) in these orbits. The study applies the model to Sun Synchrnous Orbits (SSO) in the 450-1000 km belt to demostrate the workings and interpretation of the simulation. This model is a first of its kind and far from being optimal. It is hope that this research paves the way for future developments to this model & introduces a new, much-needed perspective on how we view 'growth in the space sector'.

Speaker: Michel van Pelt (ESA)

Slides 04_Congestion-tipping_Model_for_Earth_Orbits_Final_J_.pdf

89 Economic value of space debris

Speaker: Romain Esteve (Toulouse School of Economics (TSE))

Slides 05_2017_CSID_Esteve_ESA_DebrisIndex.pdf

e.Deorbit: Flexible

90 Tethered-tugs dynamics and control verification and models validation by 0g experiments on parabolic flights

The paper presents in details the design, implementation and running of the experiment run by the PoliTethers DAERPoliMi team to verify and validate the flexible connections dynamics in the 0g relevant environment. Space Tugs exploiting tether connection with the target must avoid effects such the bounce back and whiplash provoked by the intrinsic tether flexibility and elasticity. Therefore, well suited control laws, to be exploited in the tugs main actuators activation strategy must be synthetized and robustly verified before application. The presented experiment allowed testing and verifying the proposed wave‐based control law to dump any unwanted and dangerous stack dynamics, leaning on the tension feedback. Interesting aspects regarding the tension modelling were detected, thanks to the microgravity environment, not identified running the functional tests on ground. Data post‐processing and obtained results are discussed, and on going further developments and future expected testing campaigns are presented.

Speaker: Prof. Michelle Lavagna (Politecnico di Milano)

Slides Clean_Space_Industrial_Day_25102017-MLavagna_PoLiMi.pdf

91 Design and Dynamic Testing of Tether System as Active Capture Technology for e.Deorbit and Net/Harpoon Based Missions

The concept of space tethers has great potential in space applications; for this reason they have been investigated as electrodynamics power generators or motors, momentum exchange and orbital stabilization assets or formation flying connection and pulling ropes. In the most recent years, in the context of ESA (European Space Agency) Clean Space Initiative and general interest in space debris removal missions, they have been included as one of the key technologies for capturing and de-orbiting large space target debris by pulling them. Tether as pulling capture system reveals two opposite aspect, a potential simplicity before the capture phase (simple mechanism, simple rendez-vous, versatile and cheaper) and a complexity after capture related the control and complex stack. Tether would act as a flexible link, elastic or rigid, between the chaser spacecraft and its capture system, consisting, for instance, in a harpoon or a net. Tether elasticity is an important element to take into account for the controllability of the stack. On one side, a high elasticity tether leads to a simpler control problem and a better shocks reduction. On the other hand it may include the presence of a potential resonance with sloshing and an increased risk of collision after the de-orbit burn. In Elastic Tether Design and Dynamic Testing, the ESA TRP (Technology Research Program), Arescosmo, with its local partners *Aviospace* and *Gottifredi Maffioli*, are currently studying and developing both a rigid and a highly elastic tether. Main objectives of the TRP are two; first to increase the TRL of the tether for ADR (Active Debris Removal) missions to 5-6 through an extensive environmental and functional test campaign at both material and assembly levels. Second to deliver two full-size (100 meters long) rigid and elastic tethers as fully functional Engineering Model (EM) with associated datasheets tabulating nominal and extreme values for parameters providing also a clear view of the design parameters-performances dependencies for the future CE (Concurrent Engineering) assessments to be done at system and mission levels. The on-going TRP is related to the activities for the e.Deorbit mission, now in Phase B1, and it reflects the ESA implementation plan of technologies required for ADR missions. The current paper describes the work that has been performed so far in the study. This includes design, material level characterization tests, and development tests at assembly level on scaled models of the tether system in various configurations (rigid, flexible, with and without thermal protection system). The relevant test results and the lessons learned that have guided the final design are discussed, including the various engineering challenges that were faced in designing the tether system. These challenges include thermal and chemical constraints resulting from the thruster plumes of the chaser spacecraft, physical performance of the elastic system under various load conditions, and manufacturing considerations such as the need for dedicated thermal treatments (vacuum stripping and heating treatment) of some of the materials used. The paper also describes the customized BoL and EoL tests designed to evaluate the performance of the tether systems before and after ageing in thermal-vacuum conditions. The test program exposed complex failure mechanisms where interfaces (braiding and seaming) were key points the required updates to the system design. In conclusion an overview of the planned activities until the final wrap-up will be presented.

Speaker: Dr Lorenzo Marconi (Arescosmo S.p.A.)

Slides TETHER-PBR-ASC-29_new_template.pdf

92 ISS SPHERES Tether Dynamics Experiments / Evaluation of Tethered Active Debris Removal Issues

Speaker: Mr Marcel Becker (German)

Slides 2017_CSID_MarcelBecker_TUBraunschweig_ISS_SPHERES_TETHER_DYNAMICS_EXPERIMENTS_EVALUATION_OF.pdf

93 Full Scale Demonstration of Debris Capturing with Deployable Nets

Speaker: Wojtciech Golebiowski (SKA Polska)

Slides 2017_CSID_Wojtek-Golebiowski_SKA_Full-Scale-Nets_compr.pdf

94 PATENDER: A Net-Based Experiment and Possible Solution to the Space Debris Problem

Speaker: Lorenzo Cercos (GMV)

Slides 2017_112_CERCOS-ARJONA_GMV_PATENDER_v2.pdf

Plenary: Sustainability of Space round table

95 Sustainability of Space Round Table

The session aims to discuss how we can define and quantify the sustainability of space, both from an Earth and orbital perspective.

19:00 Football tournament

Thursday 26 October

ATD3

CleanSat: Semi-controlled re-entry round table

96 Semi-controlled re-entry Round Table

Semi-controlled reentry can reduce the impact of controlled reentry at system level, but domains of feasibility and uncertainties must be quantified as well as the respective legal implications.

e.Deorbit: ESA Robotics / Lab Tours

11:00 Coffee break

ATD3

CleanSat: Deorbit equipment

97 Environmental impact of passive deorbit devices

Speaker: Dr Camilla Colombo (Politecnico di Milano)

98 ADEO Passive De-Orbit Subsystem Activity leading to a Dragsail Demonstrator: Conclusion and Next Steps

Speaker: Mrs Thomas Sinn (HPS GmbH)

Slides 2017_3_Sinn_HPS_GmbH_ADEO.pdf

99 Electrostatic tether plasma brake module for deorbiting

Speaker: Dr Pekka Janhunen (Finnish Meteorological Institute)

Slides JanhunenPlasmaBrake.pdf

100 Customer-driven deorbit kit based on bare electrodynamic tether technology

Speaker: Mr Eduardo Urgoiti (SENER)

Slides 2017_CSID_Urgoiti_SENER_Deorbit_kit_based_on_EDT_v2.pdf

e.Deorbit: e.Inspector

101 e.Inspector - a cubesat inspection mission

Speaker: Ms Sara Morales Serrano (ESA)

Slides e.Inspector_SARA.pdf

102 Inspection trajectories and GNC design

Speakers: Mr Eric Reinthal (University of Würzburg), Dr Jesus Gil (ESA/ESTEC)

Slides ESA_GNC_einspector.pdf

103 High thrust chemical propulsion for small satellites

Speaker: Tobias Knop (Hyperion Technologies)

Slides 2017_HyperionTechnologies_KnopT_PM200_CleanSpace_oct2017.pdf

104 Efficient De-Orbiting of Micro and Nano Satellites Using the IFM Nano-Thruster

Speaker: Mr Alexander Reissner (FOTEC)

Slides Space_Debris_V2.pdf

105 Nanosat propulsion systems

Speaker: Zeger de Groot (ISIS)

Slides 05_2017_CSID_Zeger_de_Groot_ISIS_Nanosatellite_propulsion_systems_-_Technologies_Applications_Impacts.pdf

13:00 Lunch break

ATD3

CleanSat: Deorbit equipment

106 Overview of technologies for controlled deorbit

Speaker: Mr Tiago Soares (ESA)

Slides CSDI_Overview_of_controlled_reentry_technologies.pdf

107 Electronic pressurant regulator

Speaker: Adam Watts (Nammo Westcott Ltd)

Slides Nammo_Electronic_Pressure_Regulator_-_Clean_Space_26-10-17.pdf

108 Arcjet

Speaker: Stefan Gregucci (Sitael)

Slides 2017_CSID_Gregucci_SITAEL_Arcjet1k.pdf

EcoDesign: Greensat brainstorming

e.Deorbit: Mega Constellations

109 Mega Constellations EOL operations

Speaker: Kate Symonds (ESA)

Slides 2017_CSID_KSymonds_EOL_Ops_for_Disposal_of_MegaCs_final.pdf

110 Active Debris Removal: A possible solution for megaconstellations

Speaker: Mrs carole billot (thales alenia space france)

Slides 2017_CSID_Billot_TASF_ADR.pdf

111 Design for Removal: A cost efficient opportunity to prepare future satellites to an an ADR mission

Speaker: Mrs carole billot (thales alenia space france)

Slides 2017_CSID_Billot_TASF_D4R.pdf

15:00 Coffee break

ATD3

CleanSat: Autonomous Deorbit systems

112 Deorbit Motors for Active Deorbiting

Speaker: Ulrich Gotzig (Ariane Group)

Slides 2017_CSID_Gotzig_Deorbit-Motors.pdf

113 Conceptual design of Solid Rocket Motor for deorbitation and advances in the development of an Aluminium-free solid propellant

Speaker: Adam Okniński (Institute of Aviation)

Slides 2017_CSID_Nowakowski_IoA_SolidRocketMotor.pdf

114 D-SAT Mission: an In-Orbit Demonstration of Satellite Controlled Re-entry

Speaker: Alessio Fanfani (D-Orbit)

Slides CleanSpace_IDs_-_D-Orbit_-_Alessio_Fanfani_-_-_D-SAT_Mission_v04_-_PDF.pdf

EcoDesign: Greensat brainstorming

Plenary: Reliability round table

115 Reliability Round Table

The requirement on reliability is evolving from a conditional success probability of the End of Life operations to an absolute value. The consequences at system and subsystem level will be discussed as well as the approach to determine the reliability at end of life and evaluate mission extensions.

Plenary: Wrap up