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ECSS Working Group “Exchange of Product Data” and related work. Hans Peter de Koning (ESA/ESTEC/TOS-MCV) European Space Research and Technology Centre Thermal Control and Life Support Division e-mail: hanspeter@yc.estec.esa.nl; phone: +31 (71) 565 3452; fax: +31 (71) 565 6142

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Ecss working group exchange of product data and related work

ECSS Working Group“Exchange of Product Data”and related work

Hans Peter de Koning (ESA/ESTEC/TOS-MCV)

European Space Research and Technology Centre

Thermal Control and Life Support Division

e-mail: hanspeter@yc.estec.esa.nl; phone: +31 (71) 565 3452; fax: +31 (71) 565 6142

mail: P.O. Box 299, Noordwijk, The Netherlands

(ECSS = European Co-operation for Space Standardisation)

STEP for Aerospace Applications at NASA/GSFC


Why need a wg and standard exchange of product data
Why need a WG and standard “Exchange of Product Data” ?

  • Efficient and effective electronic exchange of product data is considered a key enabler forfaster/better/cheaper development of space products

  • Long term, tool-independent archiving of product data is also needed in many space programmes

  • European space community (industry and agencies) need a frame of reference in order to standardise on protocols for the communication of product data

STEP for Aerospace Applications at NASA/GSFC


Brief background of the wg
Brief background of the WG

  • 1994: ESA started developing STEP-based data exchange standards (in co-operation with CNES)

    • At first focusing on thermal analysis model exchange

  • 1994 to 1998: interest broadened across disciplines

    • Electronic product definition, concurrent engineering, etc.

    • Growing maturity of STEP / more capable CAx tools

  • May-98: first informal meeting industry and agencies to assess need, support, Draft Terms of Reference for a WG

  • Feb-99: Officially installed as ECSS WG E-10-07

STEP for Aerospace Applications at NASA/GSFC


Tasks of the wg
Tasks of the WG

  • Review of existing international product data exchange standards and their suitability for use in space projects - focusing primarily on STEP

  • Identification of areas for which adapting / developing space-specific STEP-based standards is cost-effective - recommendation and promotion of further actions

  • Production of an ECSS standard for the exchange and archiving of product data in space projects

    • Including guidelines concerning the implementation / use of the standard

STEP for Aerospace Applications at NASA/GSFC


Standardisation approach 1
Standardisation approach (1)

  • ECSS E-10-07 is part of E-10 “System Engineering”

  • Addresses exchange via neutral standards (1) between different tools of one discipline(2) between tools of different disciplines

  • Archiving is considered an application of (1)

STEP for Aerospace Applications at NASA/GSFC


Standardisation approach 2
Standardisation approach (2)

  • Targeted disciplines:

    • ECSS-M-40 - Configuration Management

    • ECSS-M-50 - Information / Documentation Management

    • ECSS-M-70 - Integrated Logistic Support

    • ECSS-Q-70 - Material, Mechanical Parts & Processes

    • ECSS-E-10 - System Engineering

    • ECSS-E-20 - Electrical & Electronics

    • ECSS-E-30 - Mechanical (including thermal)

    • ECSS-E-40 - Software Engineering (only on CI level)

    • ECSS-E-60 - Control Systems

    • ECSS-E-70 - Ground Systems & Operations

STEP for Aerospace Applications at NASA/GSFC


Standardisation approach 3
Standardisation approach (3)

  • E-10-07 is an ‘umbrella’ standard

    • Specifies which standard to use for what PDE situation

    • Makes reference to existing international standards

    • Primary focus on ISO 10303 (STEP)

    • Adds guidelines / best practices on how to use the standard

    • Designed for tailoring by individual projects

    • Only file-based exchange in scope for first release

STEP for Aerospace Applications at NASA/GSFC


Standardisation approach 4
Standardisation approach (4)

  • Identified candidate STEP(-based) standards

    • AP 202: Associative draughting

    • AP 203: Configuration controlled design

    • AP 209: Composite and metallic structural analysis and related design

    • AP 210: Electronic assembly, interconnect and packaging design

    • AP 212: Electrotechnical design and installation

    • AP 214: Core data for automotive mechanical design processes

    • AP 232: Technical data packaging core information and exchange

    • AP 233: Systems engineering application protocol

    • STEP-TAS AP: Thermal Analysis for Space (ESA)

    • STEP-NRF AP: Network-model Results Format (ESA)

    • STEP-PRP AP: Propulsion Systems (CNES)

STEP for Aerospace Applications at NASA/GSFC


Requirement for tailoring
Requirement for tailoring

  • It is very unlikely that in practice such a standard can be applied as a whole to a project

  • It shall be possible to use the standard as a contractual document in a programme or projectby declaring a subset of applicable clausesto specify the data exchange protocolsthat shall be used between parties

  • Requirement for tailoring is recognised across all ECSS standards

STEP for Aerospace Applications at NASA/GSFC


Ecss e 10 07 initial core requirements specification
ECSS E-10-07Initial core requirements specification

  • A extensive list of structured 4-element requirements:

    • “To exchange datafrom a <source_discipline> representation

    • to a <destination_discipline> representation

    • for the purpose of transferring <kind_of_data>

    • the <exchange_standard> standard shall be used.”

  • For long term archiving the requirement as for exchange within one discipline shall be used

    • Identical <source_discipline> and <destination_discipline>

STEP for Aerospace Applications at NASA/GSFC


Example excerpt of initial requirements specification 1
Example excerpt of initial requirements specification (1)

STEP for Aerospace Applications at NASA/GSFC


Example excerpt of initial requirements specification 2
Example excerpt of initial requirements specification (2)

STEP for Aerospace Applications at NASA/GSFC


Status schedule of wg
Status/schedule of WG

  • 17 members (1/3 from agencies, 2/3 from industry)

  • 3 working meetings held

  • Terms of reference written and agreed

  • First working draft produced

    • Currently in review and comment loop

    • Proofs difficult to actively involve industry in production of the standard (as always with long term benefits)

  • Goal is first release of standard early 2000

STEP for Aerospace Applications at NASA/GSFC


Related work
Related work

  • Since 1994, 3 STEP-based APs have been developed by European space community

    • STEP-TAS “Thermal Analysis for Space” (ESA)

    • STEP-NRF “Network-model Results Format” (ESA)

    • STEP-PRP “Propulsion” (CNES)

  • TAS and NRF developed as companion APs together with common Integrated Application Resources:

    • “Space Domain”

    • “Definition and Results of Analysis, Tests and Operations”

    • “Thermal Analysis”

STEP for Aerospace Applications at NASA/GSFC


Status step tas step nrf
Status STEP-TAS & STEP-NRF

  • Integrated Application Resources and APsavailable in fully compliant ISO TC 184/SC 4 format

  • Full programming libraries available

    • With documentation (PDF, HTML)

    • C and FORTRAN APIs

  • STEP-TAS CC1 converters implemented in

    • ESARAD 4.1 (released June 1999)

    • THERMICA (release of 1999-Q3)

    • Limited prototypes TRASYS and TSS (with NASA-JPL)

  • STEP-NRF prototypes at Intespace and EdF

STEP for Aerospace Applications at NASA/GSFC


Future work related to step at esa
Future work related to STEP at ESA

  • Continued implementation of STEP-TAS

  • Further development of STEP-NRF

  • AP203 (CC1,4,5,6) import facility in ESARAD

    • Supports import of CAD product structure and shape

    • Will include support for NURBS in ESARAD model

  • Idea for CAD-to-Analysis tool based on AP203

STEP for Aerospace Applications at NASA/GSFC


Idea ap203 based cad to analysis tool

AP203

CAD

CAx

filter

Idea AP203-based CAD-to-Analysis tool

  • UNIX type pipe of filters

  • Open API

  • Online visualisation

STEP for Aerospace Applications at NASA/GSFC