The DLR Concurrent Engineering Facility (CEF) · DLR Institute of Space Systems System Analysis...
Transcript of The DLR Concurrent Engineering Facility (CEF) · DLR Institute of Space Systems System Analysis...
Slide 1
The DLR Concurrent Engineering Facility (CEF)
January 2011
Andy Braukhane DLR Institute of Space Systems
System Analysis Space Segment
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Overview
DLR Institute of Space SystemsSystem Analysis Space Segment (SARA)Concurrent Engineering (CE)The FacilityThe TeamPhases (of the CE-process)DLR Approach CEF EvolutionDesign ModelToolsStudiesConclusionsOutlookFurther Information
Source: Wilke, 2002
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DLR Institute of Space Systems – Overview
New DLR - Institute in BremenSystem Analysis
- Analyses and evaluation of complex space systems with respect to technical, economical and political aspects
System Technology- Systems Engineering for space crafts and their applications;
Research and Development within specific technology areasProjects
- Co-operations with other DLR institutes, Universities and Research Facilities as well as Industry
CEF
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CEFCEF
DLR Institute of Space Systems – Departments
System AnalysisSpace
Segment
System Conditioning
Central Avionics
System AnalysisSpace
Transportation
Navigation-
& Controlsystems
Transport Systems
Orbital Systems & Securitity
Exploration Systems & ScientificMissions
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System Analysis Space Segment (SARA)
3 Core AreasSystem Evaluation and CostOrbital- and Mission AnalysisSystem concepts and Concurrent Engineering
Current Project & Activities (excerpt):Concurrent Engineering Facility (CEF) operationKnowledge Capitalization (ESA-Project)Data bases for space systems, its subsystems, components and parametersSmall satellite development, e.g.: CLAVIS; AISatCompact satellites, e.g.: AsteroidFinder; CarbonSat
Cost- and mission analysisConcurrent Engineering
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Concurrent Engineering – Introduction (1/2)
Conventional Design / Engineering Processes
Centralized Engineering:
Sequential Engineering (with iterations):
Configuration ThermalPower
iteration
Power
AOCS
Configuration
Thermal
Project Manager/ Systems Engineer
Source: ESA
Source: ESA
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Concurrent Engineering – Introduction (2/2)
Concurrent Design / Engineering Process
The five key elements:
Project Manager/ Systems Engineer
Configuration Power
AOCSThermal
- Interdisciplinary expert team- CE - process- Integrated Design Model- Facility / Infrastructure- Tools (e.g. S/W; Multi-Media)
Source: ESA
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Concurrent Engineering – What is that? (1/2)
Systems Engineering technique for design, development and technical management
Systematic approach for integrated product developmentFormalization of the iterative development processConcurrent (simultaneous) work on a common problemActive involvement of all disciplines and the customerFocusses primarily on the early phases of a space project
Who does that?Agencies and research institutes
e.g.: NASA (JPL & GSFC), ESA, DLR, ASI, CNES, JAXAIndustry
e.g.: EADS Astrium, Thales Alenia Space (TAS), J-CDSUniversities
e.g.: TU Munich, MIT, Stanford; Cranfield; La Sapienza
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Concurrent Engineering – What is that? (2/2)
Benefits at a glanceInvolvement of all disciplinesCustomer participationHighly iterativeCommon understanding of the problemImmediate design change implementationQuick data exchangeUnambiguous parameters with pre-defined units
Source: vocabase.com
Source: JAQAR Concurrent Design Services (J-CDS)
reduces cost
reduces time
reduces failures
increases consistency
increases quality
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The Facility – Introduction
The Concurrent Engineering Facility is…… a System Analysis Laboratory… a DLR major research institution… dedicated for DLR internal as well as external studies / activities
The Concurrent Engineering Facility has…… 3 design rooms with 21 work stations in total … a secure network… 2 common servers (Windows; Linux)… a Tandberg videoconference system… a media management system… a knowledge management system… public LAN/WLAN access… access to an internal component data base
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The Facility – Overview
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The Facility – Main Design Room (1/2)
Set-up exampleSet-up example
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The Facility – Main Design Room (2/2)
3 Screens (2x Plasma, 1x Smartboard)3 Screens (2x Plasma, 1x Smartboard)
12 flexible Work Stations12 flexible Work Stations
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The Team
The CEF Core Team (i.e. members of SARA dept.) include e.g.:Team Leader / ModeratorSystems Engineer; Systems AssistantOptional: Mission, Cost, Risk, … (could also be a domain experts)CEF IT-Manager
Domain experts can be from…DLR Bremen,other DLR Institutes,or external institutions
Customers (e.g. PI) can beInternal departmentsAgencies (DLR; ESA)Industry / Universities
PI = Principal Investigator
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Phases – Overview
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Phases – Description (1/2)
#1 - Initiation Phase (starts months before using the CEF)“Customer” (internal group, scientists, industry) contacts CE-teamCE-team – customer negotiations Expected results definition (study objectives)Identification of required disciplines
#2 - Preparation Phase (starts weeks before using the CEF)Definition of mission objectives (with customer)Definition of mission and system requirements (with customer)Identification and selection of system concept(s)Initial mission analysis (if applicable, e. g. based on STK)Final definition and invitation of expert ensemble, agenda definition
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Phases – Description (2/2)
#3 - Study Phase (1-3 weeks in the facility)K/O with presentations of study key elements (goals, requirements) Starting with first configuration approach and estimation of budgets (mass, power, volume, modes, …) on subsystem level Iterations on subsystem and equipment level in several sessions (2- 4 hours each); e.g. trading of several options In between offline work: subsystem design in splinter groups Final Presentation of all disciplines / subsystems
#4 – Post-processing PhaseCollecting of Results (each S/S provides input to book captain)Evaluation and documentation of resultsTransfer open issues to further project workImplementation of lessons learnt into the CE-process
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DLR Approach – 2 week study example
Session: Moderated (in Main Design Room); data exchangePost-processing: Free discussions & analyses; working groupsFinal Presentation: Presentation, evaluation and comparison of results
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1 week has advantages and disadvantages: more condensed and focussed; less disturbances (e.g. other projects)less analyses time requires more effort before and after study
Approach will be adapted according to personnel and time availability
DLR Approach – 1 week study example
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CE-session at preliminary CE-FacilityPresentation Screen 1
Presentation Screen 2
Interactive Smartboard
Switch
Work stations
LEL – Conf. Am
B
C
Presentation Screen 1
Presentation Screen 2
Interactive Smartboard
Switch
Work stations
LEL – Conf. Am
B
C
CE-Coaching with ESA / JAQAR
“Design Work Shop“ (DWS) for CE-Process training
S/W output sheet with CE-results
Lessons Learned
Lessons Learned
Lessons Learned
Lessons Learned
CEF – Evolution (1/2)
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CEF – Evolution (2/2)
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Design Model – Example: ESA „IDM“
Integrated Design Model (IDM)developed by ESA
MS Excel-basedPhase 0 / ACentralized data pool
Data_exchange.xlsSheets, e.g.
Input CalculationBudgets (e.g. mass)OutputEquipment Summary
1 workbook / disciplineSatellite missions
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Design Model – Example: „VirSat“ (1/2)
Virtual Satellite (VirSat)Development at DLR-SC
Simultaneous (controlled) access of all disciplinesContains library with parametric unitsFlexible Tree-viewDrag and Drop from component- to current study-repositoryData storage via „Subversion (SVN)“uses SMP2-Standardbased on Eclipse Quelle: TSTI
Component Library
Component Library
Quelle: DLR-SC
“System breakdown”“System breakdown”
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Design Model – Example: „VirSat“ (2/2)
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Tools
Domain specific and general S/W (systems) installed among others on CEF work stations:
Additional S/W can be installed on request
Mission Satellite Toolkit (STK), version 9/10
Configuration CATIA V5 R19
Cost Small Satellite Cost Model 2007
OS Windows XP Professional
Documentation Microsoft Office 2003
Simulation Matlab/Simulink
All AGI Viewer
S/W = Software
OS = Operating System
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Studies – Results
Snapshots from the study phase…L
Mission Analysis
SBC
Filter
Diplexer A Diplexer B
3dBCoupler
RX AS-Band
RS422
RX AS-Band
RS422
TX AS-Band
RS422
TX AS-Band
RS422
RX BS-Band
RS422
RX BS-Band
RS422
TX BS-Band
RS422
TX BS-Band
RS422
TX AX-Band
LVDS
TX AX-Band
LVDS
Low GainS-Band
Low GainS-Band
High GainX-Band
TX BX-Band
LVDS
TX BX-Band
LVDS
TransferSwitch
Telecom.Power Budget
Cost
Configuration
Cryo-Kick-Stage (Aldebaran)
AsteroidFinder
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Studies – Examples (1/3)
In 2008 (* supported by ESA-CDF Team Leader):
Lunar Exploration Lander (in ESTEC-CDF)*
Asteroid Finder I (DWS I)*
Asteroid Finder II (DWS I)*
Lander Package Impacting a Seismometer (LAPIS) (DWS II)*
Cryogenic Kick Stage Study (DWS II)
Asteroid Finder III (Review in DSW II)*
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Studies – Examples (2/3)
In 2009:
AMSAT – P5
MASCOT
MASCOT-XS
AMSAT-Moon (with AMSAT-DL)
VENUS-II_1 (with Astrium)
AMSAT-Mars (with AMSAT-DL)
CarbonSat (with IUP Bremen)
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Studies – Examples (3/3)
In 2010:
MASCOT-DK
VENUS-II_2 (with Astrium)
Compass-II (with FH Aachen)
MallCom (with Y/T)
AHAB (with IUP)
CLAVIS
SolmeX (with Max-Planck)
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Conclusions
Concurrent Engineering- Reduces development cost (by factor 2) and time (by factor 4)- Minimizes failures increases consistency- Mutual education („system view“)- Very helpful in the early design phases (i.e. Phase 0 / A)
Its all about the Team…- Data models, tools and infrastructure support the process- Various models possible / available / under development- Increased engineers and scientists communication
Other (actual & potential) sectors and applications- Aeronautics, car industry- Oil- and gas; offshore plants- Civil engineering; architecture- Software engineering
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Outlook
Process application to higher project phases (Phase B and beyond)- Integration of the team, models and infrastructure across the
entire project life-cycle including disposal
Increased cross-linking of S/W and design model- Connection of domain specifc tools (DST)- Advanced Model-based System Engineering (MBSE)- Virtual pre-views; automatic 3D-models based on parameters
Implementation of internal data bases into the design models- DLR Space Suppliers and Manufacturers Database (SSAM)- DLR Concurrent Engineering Reference Database (CERD)
Closer co-operation on national & international level- Linking of CE-facilities for joint studies- Standardization of models, parameters and procedures
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Further Information
DLR CEF Websitehttp://www.dlr.de/irs/en/desktopdefault.aspx/tabid-7174/
English version to be updated…Publications
http://elib.dlr.de/56028/1/Status_of_the_Concurrent_Engineering_Facility_at_DLR_Bremen.pdfhttp://elib.dlr.de/66373/1/Schumann_CSER2010.pdfhttp://elib.dlr.de/65913/1/SCHAUS_PAPER.pdf
ESA Concurrent Design Facility (CDF)http://www.esa.int/esaMI/CDF/index.html
NASA FacilitiesJPL - TeamX: http://jplteamx.jpl.nasa.gov/GSFC – IDC: http://idc.nasa.gov/
JPL = Jet Propulsion Laboratory
GSFC = Goddard Space Flight Center
IDC = Integrated Design Center
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Thank you very much for your attention!
Any questions?
Thank you very much for your attention!
Any questions?
Andy BraukhaneSystem Analysis Space Segment
DLR Institute of Space Systems
+49 421 24420 [email protected]
Source: University of Erfurt