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The State of STEP

Explore the achievements and challenges in STEP implementation for aerospace technology. Discover the benefits, toolkits, utilities, special cases, and resources available. Learn about interoperability, multi-disciplinary capabilities, discipline model mappings, and more.

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The State of STEP

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  1. The State of STEP Achievements and Challenges Stephen C. Waterbury NASA/GSFC NASA STEP for Aerospace Workshop January 17, 2001 NASA Jet Propulsion Laboratory

  2. Translators • Mechanical CAD • Almost every COTS MCAD tool has a STEP translator • Electrical/Electronic CAD • 1 COTS translator, more being developed • Computer-Aided Engineering (Analysis) • 1 COTS translator, more being developed • Product Data Management (PDM) • Some COTS translators, more being developed • Systems Engineering • No translators (AP is a Working Draft) • Potential benefits are huge … funding is needed

  3. Toolkits and Utilities • Translator development toolkits • Several high-quality COTS toolkits • Enterprise application development toolkits • Several high-quality COTS toolkits; some open-source components • Data Utilities (validation, quality, administration) • Several high-quality COTS tools; some open-source tools

  4. Special Cases • Integrated manufacturing (CAD-to-NC, etc.) • High-quality toolkits are now emerging • Design / Analysis integration (CAD/CAE) • Some COTS translators; more capabilities being developed • CAD / CAE / PDM integration • Very rudimentary; CAD/CAE tools evolving; toolkits being developed • Thermal Analysis for Space (STEP-TAS) • Broad acceptance; translators; viewers; more being developed

  5. Challenges • STEP / OMG interoperability • Data (STEP) and API (OMG) are inherently complementary • Essential for robust applications, “plug-and-play” • Coverage of data exchange, sharing, collaboration, and archiving • Enterprise applications • XML is an important part of the solution • Also needed: high-level API’s and language interfaces (e.g. Python) • Multi-disciplinary capabilities • Systems Engineering

  6. Mechanical(MCAD) Analysis(CAE) Electronic(ECAD) SystemsEngineering AP 203 AP 209 AP 210 AP 233 Discipline Model Mappings Integrated Master Model Multi-Disciplinary Capabilities:Model Integration and Systems Engineering • Modularization • Mappings (Express-X, e.g.) • Transformations Spacecraft X Master Model

  7. STEP Resources on the Web • NASA STEP Central: the main NASA site for STEP information --http://step.nasa.gov • The NASA STEP Testbed: supporting NASA’s implementation of STEP --http://step.nasa.gov/testbed • Expresso for 95/NT (freedownload) -- http://www.nist.gov/expresso • Note: if interested in the Linux version of Expresso, contact Steve Waterbury • PDES, Inc.: a government-industry consortium implementing STEP --http://pdesinc.scra.org • STEP On-Line Information Service (SOLIS) -- http://www.nist.gov/sc4 • STEP On A Page (a capsule summary and current status of STEP) -- http://www.nist.gov/sc5/soap • USPRO (U.S. Product Data Association), distributor for STEP documents --https://www.uspro.org • The OMG Manufacturing Domain Task Force (MfgDTF): PDM Enablers, etc. --http://www.omg.org/homepages/mfg

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