References


Spacecraft Structures


SGEO / Hispasat 36W-1 (formerly Hispasat AG1). Customer: OHB-System


SGEO is a European geostationary satellite platform based on a modular design for communications payloads. The first SGEO mission with a total mass of 3.2t was successfully launched on 28. January 2017 with a Soyuz rocket. Initiated by OHB-System, SGEO has been established as a separate component of the long-term ESA schedule under the ARTES-11 program.

Space Structures was responsible for all mechanical aspects of the project.

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Structure development and qualification

  • Structure specification, SoC and VCD
  • Ensuring structure compliance and compatibility to all requirements and potential launchers
  • Definition and review of documentation and analysis provided by the structure hardware supplier RUAG
  • Global spacecraft FEM
  • Evaluation of non-conformances, damages and repairs of the structure during AIT phase
  • STM and PFM mechanical definition, test prediction, instrumentation, execution and results documentation
  • Evaluation of test results and demonstration of the mechanical qualification of the SGEO platform and 36W-1 mission
  • Preparation of Craig-Bampton FE models for Coupled Load Analysis (CLA) with Launchers

System level responsibilities

  • Definition of mechanical system-level rules and guidelines
  • Definition of the mechanical test campaign of the Proto-Flight Model (PFM)
  • Mechanical interface to launchers, customers and suppliers

Mechanical sub-system support

  • Review of all mechanical analyses, test results and documentation
  • Participation to major milestone reviews and test campaigns of equipment developments
  • Compatibility of subsystem FEM model and global spacecraft FEM model
  • Evaluation of non-conformances of sub-systems
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SGEO-HAG1_FEM SGEO-HAG1_HW


 

EXM2016_HW EXM2016_FEM


ExoMars 2016 Trace Gas Orbiter (TGO). Customer: OHB-System


ExoMars is a scientific mission to Mars to mainly investigate whether life once existed or still exists on the planet. The 3.7t Orbiter (+600kg landing module) arrived at Mars in November 2016 and is fully functional.

Space Structures provided the following structures engineering services:

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  • Detailed Static/Strength Analysis of ExoMars TGO Panels and Structure
  • Stress and Margins of Safety for Panel Facesheets, Honeycomb, Inserts, Fasteners
  • Optimization of Star Tracker Bracket performance
  • Update of global S/C FEM model
  • Thermo-elastic stress and deformation (pointing) analysis
  • Moisture- and Gravity-Release Analysis
  • Dimensional Stability Reporting
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EDRS-C. Customer: OHB-System


The European Data Relay System (EDRS) will be an independent, European satellite system designed to reduce time delays in the transmission of large quantities of data. EDRS-C is a dedicated ~3t heavy satellite based on the SGEO platform of OHB-System.

Space Structures provided the following structures engineering services:

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  • Development of the cleat verification methodology
  • Implementation of the cleat verification tool and its integration with the existing fastener and insert verification procedures
  • Cleat-joints verification under thermoelastic and quasi-static loads
  • Support during the fasteners verification activity
  • Horizontal and vertical hoisting analysis and verification
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EDRS-C_FEM EDRS-C_Mission


 

H2SAT-Mission H2SAT-FEM


Heinrich Hertz Communications Satellite (H2Sat). Customer: OHB-System


Heinrich Hertz is a ~3t heavy scientific satellite aimed for exploration and testing of new communication technologies. H2Sat is based on the SGEO platform of OHB-System.

Space Structures provided the following structures engineering services:

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  • Update of H2Sat global system/structure FEM
  • Normal mode and sine vibration analyses
  • Definition of primary and secondary notching
  • Static stress and strength analysis
  • Preparation of the thermo-elastic structures finite-element model
  • Thermo-elastic stress and deformation (pointing) analysis
  • Moisture- and Gravity Release Analysis
  • Dimensional Stability Reporting
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ExoMars 2020 Carrier Module. Customer: RUAG Space


The ExoMars 2020 mission will deliver a European rover and a Russian surface platform to the surface of Mars. Both will be brought to Mars with a carrier module. The total mass of the system is ~2.8t.

Space Structures provided the following structures engineering services:

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  • Acoustic Analysis
  • Shock Analysis (transient FEM)
  • Fracture Control Analysis of LVA Interface Ring
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EXM2020_FEM EXM2020_Mission


 

Prisma-Mission Prisma-FEM


PRISMA Satellite. Customer: OHB Italia


PRISMA is a ~800kg heavy Earth observation satellite with innovative electro-optical instrumentation which combines a hyperspectral sensor with a panchromatic, medium-resolution camera.

Space Structures provides the following structures engineering services:

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  • Generation of global system/structure FEM
  • Normal mode and sine vibration analyses
  • Definition of primary and secondary notching
  • Static Stress and strength analysis
  • Preparation of the thermo-elastic structures finite-element model
  • Thermo-elastic stress and deformation (pointing) analysis
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Sentinel-6 / Jason-CS. Customer: Airbus Defence & Space


Sentinel-6 / Jason-CS is the reference mission of the Ocean Surface Topography. It uses radar altimeter as the main payload. The total satellite mass is about 1t.

Space Structures provides the following structures engineering services:

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  • Generation of global system/structure FEM
  • Normal mode and sine vibration analyses
  • Definition of primary and secondary notching
  • Static analysis
  • Preparation of the thermo-elastic structures finite-element model
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S6-FEM S6-Mission


 

MetOp-Mission MetOp-FEM


MetOp-SG (Second Generation). Customer: RUAG Space


MetOp-SG encompasses the objective of obtaining consistent, long-term collection of data of uniform quality for meteorology and climate monitoring and forecasting. For this purpose 6 satellites in 2 configurations will be built. The total mass of one satellite is about 4t.

Space Structures provides the following structures engineering services:

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  • Generation of global system/structure FEM
  • Normal mode and sine vibration analyses
  • Static Stress and strength analysis
  • Preparation of the thermo-elastic structures finite-element model
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Meteosat Third Generation (MTG). Customer: OHB-System


The satellites of the current Meteosat system will be replaced by six satellites of a third generation. The new generation will provide significantly increased performance for weather forecast with a total satellite mass of ~3.2t.

Space Structures provided the following structures engineering services:

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Preparation of a simplified equipment finite element model and trade off study

  • Increased fundamental frequency for decoupling of spacecraft and equipment modes
  • Reduction of equipment unit loads under spacecraft sine vibration environment
  • Definition of spacecraft primary notching
  • Definition of potential spacecraft secondary notching for equipment

Central Tube development and procurement

  • Definition of central tube specification
  • Ensuring central tube compliance to system level requirements
  • Loads definition for central tube analysis
  • Supplier monitoring
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MTG-FEM MTG-Mission


 

MPCV-Mission MPCV-FEM


ORION Multi-Purpose Crew Vehicel (MPCV) Service Module Secondary Structures. Customer: RUAG


ESA and NASA are collaborating in human space exploration on the ORION programme. Europe supplies the Service Module to support the first crewed mission of the Orion spacecraft. The Service Module provides propulsion, electrical power, water and thermal control as well as maintaining the oxygen and nitrogen atmosphere for the crew.

Space Structures provides the following structures engineering services:

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  • Fracture Analysis of all secondary structures
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SpooqySat. Customer: National University of Singapore


SpooqySat is a cubesat based mission for the in-orbit demonstration of quantum-based encryption technologies. The 3U cubesat weighs ca. 4kg.

Space Structures provides the following structures engineering services:

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  • Generation of global system/structure FEM
  • Normal mode analysis
  • Static Stress and strength analysis
  • Thermo-elastic stress and deformation (pointing) analysis
  • Thermal Modelling (GMM/TMM)
  • Thermal Analysis (steady-state and transient)
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SpooqySat-Design SpooqySat-FEM