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Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 ICE Cubes Facility to Experiment Cube IRD ICE Cubes Title : ICE Cubes Facility to Experiment Cube IRD Abstract : This document provides a comprehensive interface definition between the ICE Cubes Facility (ICF) and the Experiment Cube to the ICE Cubes service customer (i.e. Experiment Cube development responsible). This IRD is to be complemented by the guidelines ICU-SA-TN-011 [RD1] and the ICD template ICU-SA-ICD-002 [RD2]. All three documents are updated at regular intervals. Before proceeding, the reader shall ensure to be in possession of the latest versions by checking on our website: http://icecubesservice.com/ International Commercial Experiments Service Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 2 ICE Cubes Facility to Experiment Cube IRD DOCUMENT APPROVAL SHEET Responsibility Name and Position Company Signature and Date Prepared by: ICE Cubes Team Space Applications Services Checked by: T. Peignier Space Applications Services System Engineer PA Checked by: L. Tazi Space Applications Services PA&S Engineer Approved by: M. Ricci Space Applications Services Project Manager Space Applications Services NV/SA www.spaceapplications.com Leuvensesteenweg 325 1932 Sint-Stevens-Woluwe (Brussels Area), Belgium Tel: +32-(0)2-721.54.84 This document is the property of Space Applications Services NV/SA. All rights reserved. Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 3 ICE Cubes Facility to Experiment Cube IRD DOCUMENT CHANGE RECORD Version Date Author Changed Sections / Reason for Change / RID No Pages 1.0.0 29-Jul- ICE Cubes Initial release 2016 Team 1.1.3 30-Jan- ICE Cubes All Draft release for PDR 2017 Team 1.2.0 16-Mar- ICE Cubes §1.3, §3.4.1, §3.5.1, Update of RDs; Electrical interface update; 2018 Team §3.6.1, §3.6.3, §3.6.5, Addition of clarifications about communications §3.6.7, §3.8.1, §3.8.10, between UHBs and Experiment Cubes, and Appendix A, Appendix about antivirus; Addition of §3.6.7; Deletion of C, Appendix D §4.2.3.7 to §4.2.3.9; Addition of Appendix A and Appendix D; Update of Appendix C; Editorial corrections throughout the document 1.2.1 20-Apr- ICE Cubes §3.4.1, §3.5.1.3 Figure 13 minor update; Addition of capacitive 2018 Team coupling requirement 1.3.0 29-Aug- ICE Cubes §1.1, §1.2, §1.3, §2.1, Deletion of AD1; Addition/update of RDs; 2018 Team §2.2, §2.3, §2.4, §3.1.1, Update of figures; Addition of §2.3.1, §2.3.2, §3.1.3, §3.1.7, §3.1.8, §2.4.1, §2.4.2; Addition of clarifications (e.g. §3.2.1, §3.2.2, §3.2.3, notes); Update of requirements; Deletion of §3.3.2, §3.3.4, §3.5.2, §3.6.3; Addition of §3.8.7 and §3.9.3; Update §3.5.3, §3.6.3, §3.6.4, of Appendix A and Appendix C §3.8.3, §3.8.7, §3.8.8, All changes above are indicated by black bars §3.9.2, §3.9.3, §4.2.1, in the page margins Appendix A, Appendix C Editorial corrections (not indicated by black bars) throughout the document 1.4.0 15-Feb- ICE Cubes §1.1, §1.3, §1.4, §2.1, Addition of clarifications (e.g. notes); Deletion 2019 Team §3.1.1, §3.1.2, §3.1.5, of RD3, RD7 and RD20; Addition of RDs; §3.1.7.1, §3.1.8, Addition of acronyms; Update of requirements §3.2.1.1, §3.2.1.3, and figures; Addition of §3.4.4, §3.4.5, §3.5.5, §3.2.3, §3.3.4, §3.4.1, §3.6.7, §3.8.11 and §5; Merging of §3.5.2.6 §3.4.4, §3.4.5, §3.5.1.2, with §3.5.2; Splitting of §3.5.3; Splitting of §3.5.1.3, §3.5.2, §3.6.4; Moving §4.2.2.5 to §4.2.3.7; Update of §3.5.2.3, §3.5.3, §3.5.5, Appendix A and Appendix D §3.6.1, §3.6.3, §3.6.4, All changes above are indicated by black bars §3.6.5, §3.6.7, §3.7.4, in the page margins §3.7.5, §3.8.11, §3.8.12, §3.9.2, §4.1, Editorial corrections (not indicated by black §4.2.2.1, §4.2.2.3, bars) throughout the document §4.2.2.4, §4.2.3.7, §4.3, §5, Appendix A, Appendix D 1.4.1 20-Feb- ICE Cubes §3.6.4.5, §3.5.2.4, Addition of §3.6.4.5; Distance added in 2019 Team Appendix A §3.5.2.4 (black bars in the page margin kept) Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 4 ICE Cubes Facility to Experiment Cube IRD DOCUMENT CHANGE RECORD Version Date Author Changed Sections / Reason for Change / RID No Pages 1.5.0 27-Mar- ICE Cubes §1.4, §3.1.5, §3.1.9, Update of requirements; Addition of §3.1.9 and 2019 Team §3.4.2, §3.4.3, §3.5.2.1, §3.6.8; Addition of references to FSDP and §3.5.2.2, §3.6.2, ICD in Appendix A; Editorial corrections §3.6.4.3, §3.6.8, §3.9.2, All changes are indicated by black bars in the §4, §4.1, Appendix A page margins Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 5 ICE Cubes Facility to Experiment Cube IRD Table of Contents 1 Introduction ............................................................................................................................... 10 1.1 Purpose and Scope ........................................................................................................ 10 1.2 Applicable Documents .................................................................................................... 10 1.3 Reference Documents .................................................................................................... 10 1.4 Acronyms ........................................................................................................................ 11 2 ICE Cubes Flight Segment Overview ...................................................................................... 14 2.1 The ICE Cubes Facility (ICF) ......................................................................................... 14 2.2 The Framework .............................................................................................................. 15 2.3 “Internal” Experiment Cubes .......................................................................................... 16 2.3.1 Experiment Cube Locations on the ICF ............................................................ 17 2.3.2 ICF Sliding Door ................................................................................................ 18 2.4 “External” Experiment Cubes & Other Payloads ............................................................ 19 2.4.1 ICF J21 Connector (DB13W3S) ........................................................................ 21 2.4.2 ICF J22 Connector (RJFTV71N) ....................................................................... 21 2.5 Thermal Cooling ............................................................................................................. 21 3 Experiment Cube Flight Interface Requirements ................................................................... 23 3.1 Mechanical Requirements .............................................................................................. 23 3.1.1 Experiment Cube Connector & Feet ................................................................. 23 3.1.2 Outer Surfaces & Protrusions ............................................................................ 24 3.1.3 Fins, Vents & Fans ............................................................................................ 24 3.1.4 Standard Form Factors ...................................................................................... 25 3.1.5 Dimensions ........................................................................................................ 25 3.1.6 Sharp Edges ...................................................................................................... 26 3.1.7 Audible Noise..................................................................................................... 26 3.1.7.1 Continuous Noise Limits .................................................................. 26 3.1.7.2 Intermittent Noise Limits .................................................................. 26 3.1.7.3 Audible Noise Limits Verification ..................................................... 26 3.1.8 Microgravity Disturbances ................................................................................. 26 3.1.9 Mass and Centre of Gravity (CoG) .................................................................... 27 3.2 Structural & Environmental Interface Requirements ...................................................... 27 3.2.1 Environmental Conditions .................................................................................. 27 3.2.1.1 Temperature, Pressure & Humidity Conditions ............................... 27 3.2.1.2 Depressurization/Re-Pressurization Conditions .............................. 28 3.2.1.3 Thermal Environment inside the ICE Cubes Facility ....................... 28 3.2.2 Launch & Landing Loads ................................................................................... 28 Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 6 ICE Cubes Facility to Experiment Cube IRD 3.2.3 Random Vibration Loads ................................................................................... 29 3.2.4 Shock Loads ...................................................................................................... 29 3.3 Thermal Requirements ................................................................................................... 29 3.3.1 Temperature Control ......................................................................................... 29 3.3.2 Touch Temperature ........................................................................................... 29 3.3.3 Thermal Sensor ................................................................................................. 29 3.3.4 Condensation Prevention .................................................................................. 30 3.4 Electrical Interface Requirements .................................................................................. 30 3.4.1 DB13W3 Connector Proprietary Wiring ............................................................. 30 3.4.2 Power ................................................................................................................. 31 3.4.3 Unexpected Power Loss .................................................................................... 31 3.4.4 Power Circuit Protection & Inrush Current ........................................................ 31 3.4.5 Input Capacitor .................................................................................................. 32 3.5 Electrical & Electromagnetic Compatibility (EMC) Requirements .................................. 32 3.5.1 Grounding, Bonding & Isolation ......................................................................... 32 3.5.1.1 Grounding (i.e. Ground Return) ....................................................... 32 3.5.1.2 Bonding (i.e. Chassis Ground) ........................................................ 32 3.5.1.3 Isolation ........................................................................................... 33 3.5.2 Electromagnetic Interference (EMI) ................................................................... 33 3.5.2.1 E-Field Radiated Emissions ............................................................ 33 3.5.2.2 B-Field Radiated Emissions ............................................................ 34 3.5.2.3 Conducted Emissions ...................................................................... 35 3.5.2.4 Radiated Susceptibility / Immunity................................................... 35 3.5.2.5 Conducted Susceptibility / Immunity................................................ 36 3.5.3 Electrostatic Discharge (ESD) Susceptibility / Immunity ................................... 38 3.5.3.1 ESD Susceptibility Tests ................................................................. 38 3.5.3.2 Caution Label (ESD Sensitive Cube) .............................................. 38 3.5.4 DC Magnetic Fields ........................................................................................... 38 3.5.5 Burn-In ............................................................................................................... 38 3.6 Data & Communication Interface Requirements ............................................................ 38 3.6.1 Experiment Cube IP Communication ................................................................ 39 3.6.2 Experiment Cubes Data Synchronisation Service............................................. 39 3.6.3 Experiment Cube Download of Data ................................................................. 40 3.6.4 Experiment Cube Software Security ................................................................. 40 3.6.4.1 Anti-Virus Protection ........................................................................ 40 3.6.4.2 Periodic Virus Signatures Definitions List Update ........................... 40 Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 7 ICE Cubes Facility to Experiment Cube IRD 3.6.4.3 OS Hardening .................................................................................. 40 3.6.4.4 In-Orbit OS Update .......................................................................... 41 3.6.4.5 Encrypted Communications ............................................................. 41 3.6.5 Ethernet Interface .............................................................................................. 41 3.6.6 Intentional Transmitters & Receivers ................................................................ 41 3.6.7 GPS Time Synchronisation ............................................................................... 41 3.6.8 Data Rates ......................................................................................................... 41 3.7 Materials Requirements ................................................................................................. 42 3.7.1 Declared Materials List (DML) ........................................................................... 42 3.7.2 Forbidden Materials & Components .................................................................. 42 3.7.3 Surface Treatments & Protective Coatings ....................................................... 42 3.7.4 Flammability....................................................................................................... 42 3.7.5 Offgassing.......................................................................................................... 42 3.7.6 Fasteners Locking ............................................................................................. 42 3.8 Safety Requirements ...................................................................................................... 43 3.8.1 Collection of Safety-Related Data ..................................................................... 43 3.8.2 Non-Conformity with Requirements .................................................................. 43 3.8.3 Containment ...................................................................................................... 43 3.8.4 Volatile Organic Compound............................................................................... 43 3.8.5 Glass or Frangible Materials Release ............................................................... 43 3.8.6 Lasers ................................................................................................................ 43 3.8.7 Light Sources ..................................................................................................... 43 3.8.8 Batteries & (Super-) Capacitors......................................................................... 43 3.8.9 Pyrotechnics ...................................................................................................... 44 3.8.10 Smoke & Fire Detection ..................................................................................... 44 3.8.11 Circuit Protection, Wire Sizing & Derating ......................................................... 44 3.8.12 Flight Readiness Certification ............................................................................ 44 3.9 Human Factor Interface Requirements .......................................................................... 44 3.9.1 Astronaut Interaction ......................................................................................... 44 3.9.2 Identification & Marking ..................................................................................... 44 3.9.3 Crew Safety ....................................................................................................... 45 3.10 Reliability Requirements ................................................................................................. 45 4 Experiment Cube Ground Interface Requirements ............................................................... 46 4.1 Hardware Interface ......................................................................................................... 46 4.2 Software Interface .......................................................................................................... 46 4.2.1 UHB to ICMCC Interface Overview ................................................................... 46 Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 8 ICE Cubes Facility to Experiment Cube IRD 4.2.2 Mandatory Software Interface Requirements .................................................... 47 4.2.2.1 Software Host .................................................................................. 47 4.2.2.2 Connection to the ICMCC ................................................................ 47 4.2.2.3 Two-Factor Authentication ............................................................... 47 4.2.2.4 Security, Split Tunnelling ................................................................. 47 4.2.3 Optional Software Interface Requirements ....................................................... 47 4.2.3.1 Data Synchronisation Service Downlink .......................................... 48 4.2.3.2 Data Synchronisation Service Uplink .............................................. 48 4.2.3.3 Private IP Address ........................................................................... 48 4.2.3.4 Direct TCP & UDP Communication ................................................. 48 4.2.3.5 TCP & UDP Protocol ....................................................................... 48 4.2.3.6 UDP Connection .............................................................................. 48 4.2.3.7 UTC Time Synchronisation .............................................................. 48 4.3 Experiment Cube Unit-to-System Testing ...................................................................... 48 5 Experiment Cube to ICE Cubes Interface Test ....................................................................... 49 Appendix A Verification Matrix ........................................................................................................ 50 Appendix B Drawings ....................................................................................................................... 53 Appendix C Random Vibration Loads ............................................................................................. 54 Appendix D Typical Timeline and Required Documents ............................................................... 55 List of Figures Figure 1 ICE Cubes Facility closed and open views ............................................................................. 14 Figure 2 Framework features ................................................................................................................ 15 Figure 3 Framework with one 2Ux2U Experiment Cube ....................................................................... 16 Figure 4 1U Experiment Cube with protruding male DB13W3P connector and feet ............................ 16 Figure 5 J01 to J08 connectors positions on the bottom of the Framework ......................................... 17 Figure 6 J09 to J20 connectors positions on the top of the Framework ............................................... 17 Figure 7 ICF sliding door position relative to ICF connector J09 .......................................................... 18 Figure 8 ICF sliding door size (as seen from inside the ICF Container) ............................................... 19 Figure 9 Accommodation of wired external payload (concept) ............................................................. 20 Figure 10 Connectors on the front of the ICF ........................................................................................ 20 Figure 11 AUX LAN J22 connector on the front of the ICF Framework ................................................ 21 Figure 12 Schematics of the forced air cooling inside the ICF Container (top view) ............................ 22 Figure 13 Shell-dimpled DB13W3P male plug (Cube side) .................................................................. 23 Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 9 ICE Cubes Facility to Experiment Cube IRD Figure 14 Protrusions from the –Z Cube wall ........................................................................................ 23 Figure 15 Proper positioning of the DB13W3P connector on a 1U Cube (dimensions in mm) ............ 24 Figure 16 Experiment Cube standard form factors ............................................................................... 25 Figure 17 DB13W3S schematic (receptacle, Framework side) ............................................................ 30 Figure 18 DB13W3P schematic (plug, Cube side) ................................................................................ 30 Figure 19 DB13W3 pin assignment ....................................................................................................... 30 Figure 20 Trip curve (after the ramp time) ............................................................................................. 32 Figure 21 E-field radiated narrowband emission limits (RE02 test method) ......................................... 34 Figure 22 E-field radiated broadband emission limits (RE02 test method) ........................................... 34 Figure 23 AC magnetic radiated emission limits (RE01 test method) ................................................... 35 Figure 24 Radiated susceptibility E-field limit (RS03 test method) ....................................................... 36 Figure 25 Radiated susceptibility B-field limit (RS01 test method) ....................................................... 36 Figure 26 Limits for conducted susceptibility (sine wave) (CS01/CS02 test methods) ......................... 37 Figure 27 Transient pulse definition (CS06 test method) ...................................................................... 37 Figure 28 ICE Cubes communications (concept) .................................................................................. 46 List of Tables Table 1 Experiment Cubes standard external dimensions.................................................................... 25 Table 2 Continuous noise limits ............................................................................................................ 26 Table 3 Environmental conditions ......................................................................................................... 27 Table 4 Launch and landing load factors envelope ............................................................................... 28 Table 5 ICE Cubes Internet protocols ................................................................................................... 39 Table 6 LOS impact on communications between a UHB and its Experiment Cube............................ 47 Table 7 Cut-out dimensions for front and rear mounting methods for DB13W3P connector ................ 53 Table 8 Random vibration environment attenuated by 7.6mm of bubblewrap ...................................... 54 Table 9 Random vibration test profile enveloping Dragon and Cygnus ................................................ 54 Table 10 Experiment Cube project typical timeline ............................................................................... 55 Table 11 Documents to be produced by the customer ......................................................................... 55 Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 10 ICE Cubes Facility to Experiment Cube IRD 1 Introduction 1.1 Purpose and Scope This Interface Requirements Document (IRD) defines the requirements on external interfaces between the ICE Cubes Facility (ICF) and the Experiment Cube to be accommodated inside it when using the ICE Cubes service. In addition, this IRD provides requirements for design and testing of the Experiment Cube, and software interface requirements necessary for the customer to communicate from ground with his/her Experiment Cube in orbit. The present document will be complemented by an addendum dealing with the specific requirements which are not detailed in this IRD. The Cube-specific addendum will be tailored (by the ICE Cubes service) based on the Experiment Cube characteristics (e.g. Cube containing batteries or laser).In addition, this IRD is accompanied by the guidelines ICU-SA-TN-011 [RD1] and ICD Template ICU-SA- ICD-002 [RD2]. All three documents are updated at regular intervals. Before proceeding, the reader shall ensure to be in possession of the latest versions by checking on our website: http://icecubesservice.com/ As the individual Experiment Cube is developed, appropriate sections of the IRD will serve as the basis for establishing a specific Experiment Cube Interface Control Document (ICD) to be agreed with the ICE Cubes service provider, i.e. Space Applications Services. The ICD (established from the ICD template [RD2]) shall take over precedence over the IRD for the Experiment Cube for which an ICD exists. The sections on Experiment Cube requirements take into account the relevant documents listed in §1.3, and incorporate the technical requirements of the latter documents to the maximum extent compatible with the technical limitations of the ICF and the programmatic constraints of the ICF development programme. 1.2 Applicable Documents The following document establishes requirements that are applicable to the Experiment Cubes. AD1 deleted 1.3 Reference Documents The following documents provide information useful in the design, development and verification of the Experiment Cube. The requirements directly applicable to the Experiment Cube have been already reported in this IRD, and as such the documents below do not need to be considered as applicable. RD1 Space Applications Services – Guidelines for Experiment Cube Design and Development, ICU-SA-TN-011, latest version RD2 Space Applications Services – Experiment Cube to ICE Cubes Service ICD Template, ICU- SA-ICD-002, latest version RD3 Astrium – Columbus Pressurized Payloads Interface Requirements Document, COL-RIBRE- SPE-0164, Issue 2A, 15-Nov-2013 (+ relevant IRNs) RD4 NASA – ISS Pressurized Volume Hardware Common Interface Requirements Document: International Space Station Program, SSP 50835, Rev. D, April 2013 (+ associated PIRNs) RD5 SpaceX – C3-1 Dragon Interface Definition Document, SPX-00001047, Version 21, 14-Aug- 2014 Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 11 ICE Cubes Facility to Experiment Cube IRD RD6 ESA – Security Requirements for LAN Connected Payloads, ESA-ISS-COL-SEC-RS-0002, Issue 1, 14-Oct-2014 RD7 ISO – General tolerances -- Part 1: Tolerances for linear and angular dimensions without individual tolerance indications, ISO 2768-1:1989, 02-Nov-1989 RD8 ISO – General tolerances -- Part 2: Geometrical tolerances for features without individual tolerance indications, ISO 2768-2:1989, 02-Nov-1989 RD9 ISO – Space systems -- Safety and compatibility of materials -- Part 1: Determination of upward flammability of materials, ISO 14624-1:2003, 01-Jun-2003 RD10 ISO – Space systems -- Safety and compatibility of materials -- Part 2: Determination of flammability of electrical-wire insulation and accessory materials, ISO 14624-2:2003, 01-Jun- 2003 RD11 Underwriters Laboratories – Standard for Tests for Flammability of Plastic Materials for Parts in Devices and Appliances, UL 94, 6th edition, 28-Mar-2013 RD12 IETF – Network Time Protocol Version 4: Protocol and Algorithms Specification, RFC 5905, Jun-2010 RD13 IETF – Transmission Control Protocol, RFC 793, Sep-1981 RD14 IETF – User Datagram Protocol, RFC 768, 28-Aug-1980 RD15 ESA – Columbus EMC & Power Quality Requirements, COL-ESA-RQ-014, Issue 2 Rev. E, 10-Dec-2001 RD16 USDOD – Measurement of Electromagnetic Interference Characteristics, MIL-STD-462, 31- Jul-1967 (+ Notice 1, 1-Aug-1968, and Notice 2, 1-May-1970) RD17 CENELEC – Electromagnetic compatibility of multimedia equipment - Emission requirements (CISPR 32:2015/COR1:2016), EN 55032:2015/AC:2016-07, Jul-2016 RD18 ECSS – Space product assurance: Derating - EEE components, ECSS-Q-ST-30-11C, Rev. 1, 4-Oct-2011 RD19 NASA – Protection of Payload Electrical Power Circuits, TA-92-038, 22-Feb-1993 RD20 Space Applications Services – Appendix A (Organisational and Logistics Aspects) to the Experiment Cube to ICE Cubes Interface Test Plan, ICU-SA-PL-019, latest version RD21 Space Applications Services – Experiment Cube to ICE Cubes Interface Test Procedure, ICU-SA-PR-023, latest version RD22 Space Applications Services – Note to the Customer for the Pre-Handover Preparations of an Experiment Cube, ICU-SA-TN-035, latest version 1.4 Acronyms AD Applicable Document AOS Acquisition of Signal AWG American Wire Gauge CCSDS Consultative Committee for Space Data Systems CD Cube Detection Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 12 ICE Cubes Facility to Experiment Cube IRD CENELEC European Committee for Electrotechnical Standardization CFDP CCSDS File Delivery Protocol CIS Center for Internet Security CIS-CAT CIS-Configuration Assessment Tool CoG Centre of Gravity COTS Commercial Off The Shelf CTB Cargo Transfer Bag DC Direct Current DDS Data Distribution Service DML Declared Materials List DPI Deep Packet Inspection ECSS European Cooperation for Space Standardization EDR European Drawer Rack EEE Electrical, Electronic and Electromechanical EMC Electromagnetic Compatibility EMI Electromagnetic Interference EPM European Physiology Module ESA European Space Agency ESD Electrostatic Discharge FSDP Flight Safety Data Package FSR Flight Safety Review FTP File Transfer Protocol GND Ground GPS Global Positioning System GRE Generic Routing Encapsulation HK Housekeeping H&S Health and Status HTTP Hypertext Transfer Protocol HTTPS HTTP Secure HTV H-II Transfer Vehicle ICD Interface Control Document ICE Cubes International Commercial Experiment Cubes ICF ICE Cubes Facility ICMCC ICE Cubes Mission Control Centre ICMP Internet Control Message Protocol IETF Internet Engineering Task Force IP Internet Protocol IRD Interface Requirements Document IRN Interface Revision Notice ISO International Organization for Standardization ISS International Space Station LAN Local Area Network LED Light-Emitting Diode LOS Loss of Signal MEVR Maximum Effective Vent Ratio N/A Not Applicable NASA National Aeronautics and Space Administration NLT Not Later Than NTP Network Time Protocol OS Operating System PDR Preliminary Design Review PIRN Preliminary Interface Revision Notice PKI Public Key Infrastructure RD Reference Document RDT Real Data Transport RFB Remote Framebuffer Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 13 ICE Cubes Facility to Experiment Cube IRD RID Review Item Discrepancy RTCP RTP Control Protocol RTP Real-time Transport Protocol RTPS Real Time Publish Subscribe RTSP Real Time Streaming Protocol SFTP SSH File Transfer Protocol SCB Security Control Board SPL Sound Pressure Level SSD Solid State Drive SSH Secure Shell SSL Secure Sockets Layer TBC To Be Confirmed TBD To Be Determined TC Telecommand TCP Transmission Control Protocol TIM Technical Interchange Meeting TLS Transport Layer Security TM Telemetry U Unit (= 10 x 10 x 10 cm) UDP User Datagram Protocol UHB User Home Base USB Universal Serial Bus USDOD United States Department of Defense UTC Coordinated Universal Time VNC Virtual Network Computing VPN Virtual Private Network WAP Wireless Access Point WLAN Wireless Local Area Network XLS Microsoft Excel Spreadsheet File Format XML Extensible Markup Language XTCE XML Telemetric and Command Exchange Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 14 ICE Cubes Facility to Experiment Cube IRD 2 ICE Cubes Flight Segment Overview This section provides an overview of the ICE Cubes Facility (ICF). Detailed information and interface requirements are provided in section 3 and section 4. 2.1 The ICE Cubes Facility (ICF) The main characteristics in terms of physical conceptual configuration are briefly highlighted in the following. The ICE Cubes Facility (ICF) is composed of: • The Framework, accommodating up to 20 Experiment Cubes, and providing power and data/commands connectivity. • The structural Container, to be installed and mechanically fastened inside the hosting rack (EPM) on board Columbus. • Removable mass memory storage devices, namely the Solid State Drives (SSDs) and USB flash drives necessary to host the operational software and to physically download the scientific data. The Experiment Cubes are standardized plug-and-play research modules (1U = 10cmx10cmx10cm) or modular combinations of that basic size. Views of the ICF with the Framework and the Experiment Cubes are shown in Figure 1. ICF Container Sliding door (within the hinged door) Cooled air inlets (5x on each side of the Container) Experiment Cubes (one 2U and two 1U shown) ICF Framework Figure 1 ICE Cubes Facility closed and open views Unless otherwise specified, all dimensions pertaining to the ICF have standard tolerances, as specified in ISO 2768-1 [RD7] for linear and angular dimensions and in ISO 2768-2 [RD8] for features. The applicable tolerance classes are “m” and “K”, respectively. Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 15 ICE Cubes Facility to Experiment Cube IRD 2.2 The Framework The Framework (Figure 2) is the central unit that accommodates each Experiment Cube and offers services such as power, connectivity and data storage. It offers: • Up to 20 active locations (power + gigabit Ethernet) for the accommodation and management of “internal” Experiment Cubes, each location is equipped with one DB13W3S female receptacle (J01 to J20, cf. Figure 5 and Figure 6). • 1 active location (in the front), J21, for the accommodation/interfacing of an Experiment Cube located externally to the ICF and connected via a cable (cf. Figure 9) • 1 Wireless Access Point (WAP) for the management of Experiment Cubes hosted in Columbus and connected via a private Wireless Local Area Network (WLAN) generated by the ICF. • 2 USB 3.0 Type-A ports (in the front) used, e.g. for connecting USB flash drives • 1 auxiliary LAN connector, J22 (RJ45 port) The system, including the Experiment Cubes, is monitored and operated from ground. Nominal interventions of the astronauts are limited to activation of power switch, exchange of Experiment Cubes and, if requested, installing/removing the SSD and USB flash drives used for collection of large amounts of scientific data to be physically downloaded to ground. DB13W3 receptacles to plug Experiment Cubes Air cooling slits Auxiliary LAN connector J22 (dust cap on) Sliding guides for accommodation in Container Two USB 3.0 slots LAN port to/from ground (J23 & J24) DB13W3 receptacle J21 for one “external” Cube Power switch Hosting bay for two removable SSDs Figure 2 Framework features Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 16 ICE Cubes Facility to Experiment Cube IRD 2.3 “Internal” Experiment Cubes The “internal” Experiment Cubes (hereafter referred to as “Experiment Cubes” or “Cubes”) can vary per experiment but will all have to meet basic interface requirements with the Framework such as modular size, weight, interface, maximum allowable power, etc. The size of the Experiment Cubes is set to mimic the CubeSat standard, i.e. 10x10x10cm (1 litre) for a 1U Experiment Cube, 20x10x10cm for a 2U Experiment Cube, etc. with one principal difference: Experiment Cubes can be scaled along two axes in order to offer more flexibility to customers. Figure 3 Framework with one 2Ux2U Experiment Cube Figure 4 1U Experiment Cube with protruding male DB13W3P connector and feet Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 17 ICE Cubes Facility to Experiment Cube IRD The Experiment Cubes can be functionally interconnected via the network offered by the Framework. The ICF housekeeping and the scientific data will be stored on a removable SSD and will be downlinked to ground according to the capabilities offered by the ISS infrastructure. 2.3.1 Experiment Cube Locations on the ICF Different voltages (5V and/or 12V) and power profiles are available for each Experiment Cube location. Figure 5 J01 to J08 connectors positions on the bottom of the Framework Figure 6 J09 to J20 connectors positions on the top of the Framework Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 18 ICE Cubes Facility to Experiment Cube IRD 2.3.2 ICF Sliding Door The Container door features a smaller sliding door (cf. Figure 1). This sliding door allows a limited access to possible special Cubes located on top of the J09 connector of the Framework. Indeed, a class of special Cubes may be able to host experiment cartridges (e.g. 20x40x80mm), which may require to be replaced more frequently than the Cubes and/or while the ICE Cubes Facility remains powered. For making use of this sliding door, please contact the ICE Cubes service. Figure 7 ICF sliding door position relative to ICF connector J09 Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 19 ICE Cubes Facility to Experiment Cube IRD Figure 8 ICF sliding door size (as seen from inside the ICF Container) 2.4 “External” Experiment Cubes & Other Payloads The requirements in this IRD have mostly been defined for “internal” Experiment Cubes. Nevertheless, “external” Experiment Cubes or other payloads can be physically accommodated outside the ICF and connected to the ICF via: • Wi-Fi • the front DB13W3S female receptacle (J21) of the Framework • the auxiliary LAN connector (J22) of the Framework • the USB 3.0 Type-A ports (J23 / J24) of the Framework. For making use of any of these interfaces, please contact the ICE Cubes service. The concept for the accommodation of wired external payloads is shown in Figure 9. The “external” Experiment Cube could for example be attached via a bogen arm to the seat track next to the ICF. Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 20 ICE Cubes Facility to Experiment Cube IRD Seat track LAN cable to/from Columbus “External” Experiment Cube (20x20x30cm shown) “External” Experiment Cube to ICF J21 connection cable Figure 9 Accommodation of wired external payload (concept) Figure 10 Connectors on the front of the ICF Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 21 ICE Cubes Facility to Experiment Cube IRD 2.4.1 ICF J21 Connector (DB13W3S) The front DB13W3S receptacle (J21) of the Framework is almost identical in all aspects to the twenty other DB13W3S receptacles (J01 to J20) on the Framework, as defined in req. 3.1.1 and req. 3.4. The only difference is the fact that there is one #4-40UNC-threaded jackpost on each side of J21 (cf. Figure 10) to better secure a mated plug using two jackscrews. 2.4.2 ICF J22 Connector (RJFTV71N) The AUX LAN connector (J22) provides a gigabit Ethernet interface to the ICF. The connector is an Amphenol RJFTV71N receptacle with key coding A (cf. Figure 11). The pin assignment follows the commonly used ANSI/TIA-568 standard. It can be interfaced using a typical RJ45 plug, which may (or not) be encased in an Amphenol RJFTV6MN or RJFTV6N shell. Figure 11 AUX LAN J22 connector on the front of the ICF Framework 2.5 Thermal Cooling The ICF thermal dissipation concept is based on forced air cooling provided by the hosting rack. The warm air is sucked from two air outlets located on the rear panel of the Container, while the cold air enters from the ten inlets on the side walls of the Container. Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 22 ICE Cubes Facility to Experiment Cube IRD Figure 12 Schematics of the forced air cooling inside the ICF Container (top view) Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 23 ICE Cubes Facility to Experiment Cube IRD 3 Experiment Cube Flight Interface Requirements 3.1 Mechanical Requirements 3.1.1 Experiment Cube Connector & Feet Figure 13 Shell-dimpled DB13W3P male plug (Cube side) The Experiment Cube shall feature at least four “feet”, roughly one at each of the four corners of the –Z face, protruding from the –Z face (cf. Figure 4). These protrusions (pf in Figure 14), as measured from the Cube –Z surface shall be ≥3.0 mm. These feet are needed to ensure that there will not be too much pressure on the DB13W3 connector(s) while being mated to the ICF Framework. The shape and exact locations of the feet onto the Cube shall be coordinated with the ICE Cubes service. The Experiment Cube shall have at least one DB13W3P (male) connector, with shell dimples, protruding from the –Z face (cf. Figure 15). This protrusion (pc in Figure 14), as measured from the Cube –Z surface shall be such that pc - pf = 1.0mm (±0.2mm). Other than the aforementioned connector(s) and feet, any protrusion from the Cube –Z surface (such as screw heads), measured as ps in Figure 14, shall be such that pf - ps ≥ 1.0mm. When the Experiment Cube is mated to the ICF, no element from the Cube (other than the aforementioned connector(s) and feet) shall touch the ICF Framework. In particular, Cubes larger than 1U shall have a minimum clearance of 2mm (in all directions) around the other DB13W3S connectors (cf. Figure 5 and Figure 6), which protrude by 4.3mm from the Framework walls. DB13W3P plug dimpled shell protruding screw head (if any) pc - pf =1.0mm pc ps ps pf ≥ 3.0mm Cube foot Cube wall Figure 14 Protrusions from the –Z Cube wall Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 24 ICE Cubes Facility to Experiment Cube IRD A mechanical interface drawing of the DB13W3P connector that is required for compatibility with the ICF is included in Appendix B.1. For a 1U Experiment Cube, the positioning of the connector on the Cube shall comply with Figure 15. For positioning of the connector(s) on larger Cubes and/or Cubes requiring more than one DB13W3P connector (cf. Figure 5 and Figure 6 for the positions of the various DB13W3S connectors on the Framework), please coordinate with the ICE Cubes service. Figure 15 Proper positioning of the DB13W3P connector on a 1U Cube (dimensions in mm) Note: In agreement with the ICE Cubes service, the coordinate system for the Experiment Cube may be different than the one pictured in Figure 15. 3.1.2 Outer Surfaces & Protrusions No object or element shall protrude from the external walls of the Experiment Cube, with the following exceptions: • the aforementioned connector(s) and feet (see req. 3.1.1), • heads of eventual screws fastening the aforementioned connector (cf. Figure 14), • heads of eventual screws fastening the Experiment Cube walls (see also req. 3.1.6), • eventual fins (see req. 3.1.3). Note: Cubes requiring a different setup need prior approval from the ICE Cubes service. 3.1.3 Fins, Vents & Fans For Experiment Cubes requiring objects or elements which have the potential to significantly alter the direction and/or speed of the forced air flow around the Experiment Cube (e.g. fins, vents and/or fans), please coordinate with the ICE Cubes service for more information and approval. Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 25 ICE Cubes Facility to Experiment Cube IRD 3.1.4 Standard Form Factors The Experiment Cube can range in size from 1U to 4Ux3U, as illustrated in Figure 16. 2Ux1.5U 4Ux2U 3Ux2U 3Ux3U 2Ux2U 2U 4Ux3U 1.5U 1U 4U 3U Figure 16 Experiment Cube standard form factors 3.1.5 Dimensions The Experiment Cube shall have external dimensions as per one of the lines in Table 1. Table 1 Experiment Cubes standard external dimensions Cube Form Factor Cube External Dimensions* (±4mm) 1U 100mm x 100mm x 100mm 1.5U 162.5mm x 100mm x 100mm 2U 225mm x 100mm x 100mm 3U 350mm x 100mm x 100mm 4U 475mm x 100mm x 100mm 2U x 1.5U 225mm x 162.5mm x 100mm 2U x 2U 225mm x 225mm x 100mm 3U x 2U 350mm x 225mm x 100mm 3U x 3U 350mm x 350mm x 100mm 4U x 2U 475mm x 225mm x 100mm 4U x 3U 475mm x 350mm x 100mm * excluding small protrusions from the Cube external walls such as connector(s), feet and screw heads (cf. req. 3.1.2 Note: Cubes requiring different dimensions need prior approval from the ICE Cubes service. The external dimensions of the Experiment Cube (and ancillary flight items, if any) shall be established with ±5% accuracy. The overall height of the Cube (i.e. dimension along the Z axis per Figure 15), as measured between the DB13W3 connector(s) and any protrusion (as defined in req. 3.1.2) on the +Z face, shall be
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 26 ICE Cubes Facility to Experiment Cube IRD 3.1.6 Sharp Edges To prevent inadvertent injury to the astronauts, the external surfaces of the Experiment Cube shall not have sharp edges, sharp corners and/or sharp protrusions. The sharp edges verification shall make use of a cotton glove that should not be snagged as it passes over all of the Cube surfaces (including the protruding connector, etc. per req. 3.1.2). 3.1.7 Audible Noise 3.1.7.1 Continuous Noise Limits The total unweighted Sound Pressure Level (SPL) generated by the Experiment Cube in the noisiest functioning conditions shall be measured at a fixed distance from the noisiest Cube surface in all octave bands between 63Hz and 8000Hz (i.e. 63Hz, 125Hz, 250Hz, 500Hz, 1kHz, 2kHz, 4kHz and 8kHz). This distance is 60cm for an “external” Cube, and can vary from 64cm to 102cm for an “internal” Cube, to be coordinated with the ICE Cubes service. For continuous noise (i.e. more than 8 hours per 24-hour period), the limit levels defined in Table 2 shall not be exceeded in any octave band. Table 2 Continuous noise limits Frequency 63Hz 125Hz 250Hz 500Hz 1kHz 2kHz 4kHz 8kHz Limit (“internal”, TBC) 60dBL 50dBL 39dBL 35dBL 34dBL 32dBL 33dBL 35dBL Limit (“external”, TBC) 64dBL 56dBL 50dBL 45dBL 41dBL 39dBL 38dBL 37dBL Note: If the noise generated by the Experiment Cube is lower than 31dBA (A-weighted dB) when measured at 64cm (60cm for an “external” Cube) from the noisiest Cube surface in the noisiest functioning conditions, the above-specified measurement is in principle not required. Please contact the ICE Cubes service for details. 3.1.7.2 Intermittent Noise Limits In case of intermittent noise generated by the Experiment Cube, i.e. less than 8 hours per 24-hour period, the acceptable noise limits can be higher than the values defined in Table 2 and they shall be agreed with the ICE Cubes service. 3.1.7.3 Audible Noise Limits Verification The requirements of audible noise produced by the Experiment Cube can be verified by: • Analysis based on the datasheets of the commercial parts, if available, and/or • Test The test setup and procedure (including success criteria) shall be agreed between the ICE Cubes service and the customer. 3.1.8 Microgravity Disturbances Microgravity disturbances generated by the Experiment Cube at the level of the mechanical interface with the ICF shall be limited. Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 27 ICE Cubes Facility to Experiment Cube IRD Based on preliminary indications from §3.1.2 of SSP 50835 [RD4], the Experiment Cube shall not generate vibratory accelerations: • ≥ 0.001 µg in the frequency range 0.01 < f ≤ 0.1 Hz, and • ≥ 0.01 x f µg in the frequency range 0.1 < f ≤ 100 Hz, and • ≥ 1 µg for frequencies f ≥ 100 Hz. The test setup and procedure (including success criteria) shall be agreed between the ICE Cubes service and the customer. Note: This requirement is mostly relevant for Cubes containing moving parts (pumps, fans, motors, valves), which are prone to generating perceptible vibrations, including acoustic vibrations. 3.1.9 Mass and Centre of Gravity (CoG) The mass (launch configuration) and CoG (in-orbit configuration) of the Experiment Cube (and ancillary flight items, if any) shall be established with accuracies of ±5% and ±10%, respectively. Note: The typical Experiment Cube coordinate system is pictured in Figure 15. 3.2 Structural & Environmental Interface Requirements 3.2.1 Environmental Conditions 3.2.1.1 Temperature, Pressure & Humidity Conditions To guarantee mission success (reliability-related, see req. 3.10), the Experiment Cube shall be able to withstand the ISS, HTV, Progress, Soyuz, Dragon, and Cygnus humidity, temperature and atmospheric pressure requirements as summarized here below (from COL-RIBRE-SPE-0164 [RD3] and SSP 50835 [RD4]). Table 3 Environmental conditions Temperature (°C) Pressure (mbar) Maximum Relative Humidity (%) Storage +5 to +46 896 to 1103 85 Transport 0 to +50* 896 to 1103 90 Accommodation into 0 to +50 600 to 1293 85 launcher Launch / Ascent 0 to +50** 0 to 1293 90 (100 depressed) On Orbit (on board the +5 to +45 0 to 1048 70 (100 depressed) ISS) non operational Descent / Landing 0 to +40** 0 to 1293 90 (100 depressed) After Landing in Soyuz -50 to +50 atmospheric 98 * In the event of a winter launch in Progress or Soyuz, the temperature range requirement during transportation by train to the launch site is actually -50°C to +50°C. However, this temperature range can be narrowed to 0°C to +50°C by shipping the hardware items to the launch site in such a way that no transportation in an uncontrolled temperature environment takes place (as it has been done in the past for other projects). Therefore, it is considered appropriate to verify compliance of the Experiment Cube design against the 0°C to +50°C range. ** In the event of a launch and/or return in Dragon, the temperature ranges can be narrowed to +18.3°C to +30°C. Copyright by Space Applications Services – All Rights Reserved
Reference : ICU-SA-RQ-004 Version : 1.5.0 Date : 27-Mar-2019 Page : 28 ICE Cubes Facility to Experiment Cube IRD For Experiment Cubes with special temperature and/or humidity control requirements (on board, during launch, and/or return to ground), please coordinate with the ICE Cubes service as early as possible. 3.2.1.2 Depressurization/Re-Pressurization Conditions The Experiment Cube shall be compatible with the following: • The maximum depressurization/re-pressurization rates during transport (ascent/descent) of 13.3 kPa/s and 798 Pa/s, respectively. • The depressurization/re-pressurization rates on board the ISS of 878 Pa/s (for at least 2 min, starting at ambient pressure), and 230 Pa/s (for at least 3 min, starting at p = 100 Pa). • The pressure gradient that may occur due to fire suppression in the rack where the ICF is hosted, with a peak pressurization rate of 20 kPa/s (for less than 0.1 second in the case of manual fire suppression). Note: To guarantee that no significant mechanical stress is applied on enclosed (not intentionally sealed) structures during depressurization or re-pressurization, vents in each enclosure should be implemented such that the Maximum Effective Vent Ratio (MEVR) = internal volume (cm³) / effective vent area (cm²) ≤ 5080 cm. Enclosures verifying this criterion do not require any depressurization/re-pressurization test nor structural analysis. 3.2.1.3 Thermal Environment inside the ICE Cubes Facility The cooling of the Experiment Cube is obtained via forced air ventilation inside the ICF. The temperature of the cooled air flow entering the ICF Container can range between 17°C and 30°C (hosting rack design values). Measurements performed in the past range between 20°C and 25°C. Approximate temperature of the air surrounding the Experiment Cube, if requested, can be offered by proper location of the Cube itself in the ICF. If needed for mission success (reliability-related, see req. 3.10), fine temperature control shall be implemented by the customer at Cube level, e.g. by introducing heaters, fins, vents, fans (see req. 3.1.3) or Peltier coolers, as necessary. 3.2.2 Launch & Landing Loads The Experiment Cube safety-critical and interface-critical structures shall provide positive margins of safety when exposed to the accelerations documented in Table 4 at the centre of gravity of the Cube soft stowed in bags (soft packaging in principle provided by the ICE Cubes service), with all six degrees of freedom acting simultaneously. Table 4 Launch and landing load factors envelope Nx (g) Ny (g) Nz (g) Rx (rad/s²) Ry (rad/s²) Rz (rad/s²) Launch +/-7.4 +/-7.4 +/-7.4 +/-13.5 +/-13.5 +/-13.5 Landing +/-10.0 +/-10.0 +/-10.0 N/A N/A N/A Safety-critical and interface-critical structures within an Experiment Cube will be identified by the ICE Cubes service, based on the peculiarities of the Experiment Cube. Copyright by Space Applications Services – All Rights Reserved
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