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A Governance-Driven Solution for a European Space Weather ‎Monitoring System 11th European Space Weather Week Dr. Alejandro Salado et al. 17.11.2014 Liege,

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Presentation on theme: "A Governance-Driven Solution for a European Space Weather ‎Monitoring System 11th European Space Weather Week Dr. Alejandro Salado et al. 17.11.2014 Liege,"— Presentation transcript:

1 A Governance-Driven Solution for a European Space Weather ‎Monitoring System 11th European Space Weather Week Dr. Alejandro Salado et al Liege, Belgium

2 OHB System AG Requirements overview and major system drivers Seite 211 th European Space Weather Week assets requirements 303 products37 services 8 service domains System performance A Governance-Driven Solution for a European Space Weather ‎Monitoring System S/C designers S/C operators Human spaceflight Launch operators Satellite com & nav SST Non-space operators General data services

3 OHB System AG SWE System Context Seite 311 th European Space Weather Week A Governance-Driven Solution for a European Space Weather ‎Monitoring System

4 OHB System AG Space Segment Seite 411 th European Space Weather Week One mission to a low altitude Earth orbit Two missions to a LEO sun-synchronous orbit Two missions on MEO (SSA payloads hosted) Two missions in GEO (SSA payloads hosted) One mission at L1 (preferably SSA payloads hosted, however dedicated mission option given as well) One mission at L5 (preferably SSA payloads hosted, however dedicated mission option given as well) A Governance-Driven Solution for a European Space Weather ‎Monitoring System

5 OHB System AG Space Segment – SSO Mission 1 Seite 511 th European Space Weather Week SSO Mission 1 Sun-Synchronous Dawn-Dusk orbit (h~974 km): Allows nearly continuous view of the sun (duration of max 13 min over a yearly three months period) Orbit altitude vs S/C mass had to be traded Higher altitude results in less eclipses but more propellant needed for de-orbiting the S/C Wet mass of 858 kg, including the following paylaods: Radiation MonitorSoft X-ray solar disk imager Langmuir probe with VLF spectrometerDoppler imager MagnetometerLy-alpha imager E or B antenna with HFMF-LF receivers/spectrometers VIS coronograph EUV solar disk imagerSolar radiospectrographer VIS solar disk imagerEUV-ray flux monitor UV-ray flux monitor A Governance-Driven Solution for a European Space Weather ‎Monitoring System

6 OHB System AG Space Segment – Polar LEO (SSO Mission 2) Seite 611 th European Space Weather Week Polar LEO Mission very similar to SSO 1 Some payloads require 2 measurement points at same orbit with 180° phasing Launched with VEGA Wet mass of 500 kg, including the following paylaods: GNSS receiverE or B antenna with HFMF-LF receivers/spectrometers Micro particle detectorMagnetometer Radiaion monitorLangmuir probe with VLF spectrometer A Governance-Driven Solution for a European Space Weather ‎Monitoring System

7 OHB System AG Space Segment – Low Altitude Mission Seite 711 th European Space Weather Week Low Altitude Mission Required for atmospheric density measurements and aurora imaging SSO (not Dawn-Dusk) Altitude traded with lifetime At an altitude of 350 km it is expected to have about 4 mN of drag force, which results in about -29 m/rev change in semi-major axis. Continuous electric propulsion necessary for drag compensation S/C mass estimated to 815 kg, including the following payloads: AccelerometerWide-field auroral imager A Governance-Driven Solution for a European Space Weather ‎Monitoring System

8 OHB System AG Space Segment – MEO Missions Seite 8 11 th European Space Weather Week MEO Missions Instruments in MEO can be hosted on navigation satellites – many opportunities This enables a significant cost reduction Instruments require to be placed in two different S/C on the same orbit with roughly 180° phasing between each other. The following payloads should be included: Radiaion monitorIon Spectrometer Magnetometer A Governance-Driven Solution for a European Space Weather ‎Monitoring System

9 OHB System AG Space Segment – GEO Missions Seite 9 11 th European Space Weather Week GEO Missions GEO Instruments in GEO can be hosted on Geostationary satellites – also many opportunities This enables a significant cost reduction Instruments require to be placed in two different S/C on the same orbit with roughly 180° phasing between each other. The following payloads should be included: Radiaion monitorIon Spectrometer MagnetometerMicro-particle detector A Governance-Driven Solution for a European Space Weather ‎Monitoring System

10 OHB System AG Space Segment – L1 Mission Seite 1011 th European Space Weather Week Approach used was to minimise cost of mission by minimizing platform size and dimension. This was achieved by placing the sun observing payloads in LEO A drawback of this approach are the eclipses in LEO which can obstruct the FoV, however in SSO they are minimized. Payloads: Ion Energy Spectrometer Density probe 3-axis Fluxgate Magnetometer Radiation Monitoring Sun Earth L1 1.5 million km A Governance-Driven Solution for a European Space Weather ‎Monitoring System

11 OHB System AG Space Segment – L5 Mission Seite 1111 th European Space Weather Week L5 mission is important for monitoring the Sun-Earth line and to detect anomalies in the sun behaviour before they are visible from the Sun-Earth line. Payloads: EUV solar disk imager Heliospheric imager Coronograph imager Sun Earth L5 1 AU Sun-Earth line A Governance-Driven Solution for a European Space Weather ‎Monitoring System

12 OHB System AG Systems versus Systems of systems Seite 1211 th European Space Weather Week A Governance-Driven Solution for a European Space Weather ‎Monitoring System

13 OHB System AG Analysis approach Seite 1311 th European Space Weather Week Contribution of instruments to overall SWE capability 2.Contribution of each satellite (or space mission) to overall SWE capability 3.Uncertainties usually faced by space systems 4.Governance approach 5.Redundancy and deployment alternatives 6.Qualitative adaptability assessment 7.Redefinition of SWE (space segment) architecture 8.Deployment strategy A Governance-Driven Solution for a European Space Weather ‎Monitoring System

14 OHB System AG Dependencies M products and derived products Seite th European Space Weather Week A Governance-Driven Solution for a European Space Weather ‎Monitoring System

15 OHB System AG Capability loss analysis Seite 1511 th European Space Weather Week A Governance-Driven Solution for a European Space Weather ‎Monitoring System

16 OHB System AG Capability contribution analysis Seite 1611 th European Space Weather Week A Governance-Driven Solution for a European Space Weather ‎Monitoring System

17 OHB System AG Capability for money Seite 1711 th European Space Weather Week yet SSO LEO maximum absolute capability A Governance-Driven Solution for a European Space Weather ‎Monitoring System

18 OHB System AG Other hosting opportunities? Seite 1811 th European Space Weather Week A Governance-Driven Solution for a European Space Weather ‎Monitoring System

19 OHB System AG Impact of NGRM (in-situ) not driving capability analysis Seite 1911 th European Space Weather Week A Governance-Driven Solution for a European Space Weather ‎Monitoring System

20 OHB System AG Governance approach Seite th European Space Weather Week Limited to European assets – What is the cost of ownership? A Governance-Driven Solution for a European Space Weather ‎Monitoring System

21 OHB System AG Adaptability assessment – Approach Seite 2111 th European Space Weather Week UNCERTAINTIES DESIGN OPTIONS Launch delay New user requirements In-orbit failure Budget fluctuation Satellite duplication Satellite duplication & phased deployment Instrument duplication within satellite Instrument duplication in different orbit Qualititative – Not probabilistic based due to time limitations A Governance-Driven Solution for a European Space Weather ‎Monitoring System

22 OHB System AG Adaptability assessment – Schedule delay example Seite 2211 th European Space Weather Week Nominal Redundant satellites Redundant satellites & Phased deployment A Governance-Driven Solution for a European Space Weather ‎Monitoring System

23 OHB System AG Adaptability assessment – Results Seite 2311 th European Space Weather Week CaseSch delay New user reqs Budget delay In-orbit failure InvestmentInvestment profile 0. Baseline Satellite duplication Satellite duplication & phased deployment Overlapping replenishment Instrument duplication with each satellite Instrument duplication in different orbits A Governance-Driven Solution for a European Space Weather ‎Monitoring System

24 OHB System AG Deployment strategy – New insights from adaptability Seite 2411 th European Space Weather Week Option a) GOES/EXIS moves from SSO to L1 Option b) SWAP+SolO/PRW move from SSO to L1 So... Why Option a) not baseline for L1? Because of ADAPTABILITY! A Governance-Driven Solution for a European Space Weather ‎Monitoring System

25 OHB System AG Deployment strategy – Results Seite 2511 th European Space Weather Week Objective: maximize cumulated capability 1.L1 satellite option a) 2.SSO satellite 3.Polar LEO satellite 4.L5 satellite 5.Low altitude LEO But L1 replenishment with BASELINE L1 satellite! A Governance-Driven Solution for a European Space Weather ‎Monitoring System

26 OHB System AG Conclusions and future work Seite 2611 th European Space Weather Week A cost-effective solution for a SWE has been presented The value of governance, capability and adaptability analyses was proven by showcasing their application on the space segment of the proposed architecture Future work is proposed to expand such activities to the full SWE and to: Model quantitatively all types of uncertainties Validate capability/value models of SWE services Automate generation of design alternatives Automate generation of uncertain future scenarios Perform Monte Carlo analyses with optimization to identify best-value design alternatives and deployment strategies A Governance-Driven Solution for a European Space Weather ‎Monitoring System


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