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Tuesday, 2018-12-18

LOTAR EAS: Planning & Accomplishments


Figure 3 illustrates the timeline for Phase 1 development efforts.

Figure 3: LOTAR EAS WG initial planning (click to enlarge)



  • Completed Pilot Study #2 (FEA outputs)
  • Supported the CAE-IF second test round (R2S)
  • Published the AP209 ed2 Linear Statics Structural FEA Handbook Volume 1 (coordinate systems, nodes, elment, properties and materials) on the public area of CAx-IF website
  • Developing the AP209 Handbook Volume 2 (subcases, loads, boundary conditions) and Volume 3 (output requests, results)
  • Drafting content for NAS/EN-9300-620 "Part 620: LOTAR of FEA Structural Analysis information" 
  • Submitted LOTAR EAS newsletters published in NAFEMS Benchmark magazine (April 2018, July 2018)
  • Presented at various NAFEMS events


  • Launched Pilot Study #2 (FEA outputs)
  • Successfully completed Pilot Study #1 (FEA inputs)
  • Developed the AP209 ed2 Linear Statics Structural FEA Handbook Volume 1(coordinate systems, nodes, elements, properties and materials) based on the test models used in the pilot
  • Defined validation properties for AP209 ed2 file exchange
  • Updated the STEP File Analyzer to support AP209 ed2 and implemented a visualizer of the FEA mesh, loads and boundary conditions (NIST)
  • Presented LOTAR EAS status at NAFEMS events
  • Launched the CAE-IF and completed the first interoperability test round (R1S) based on AP209 ed2
  • LOTAR EAS first newsletter was published in NAFEMS Benchmark magazine (Oct. 2017)
  • Updated the STEP File Analyzer to support AP209 ed2 and implemented a visualizer of the FEA mesh, loads and boundar conditions and results ( NIST)


  • Updated AP209 Recommended Practices document consistent with AP209 ed2 IS
  • Signed MoU with NAFEMS to approach CAE vendors with joint communication for development of AP209 ed2 translators
  • Developed detailed planning for execution of initial AP209 ed2 Pilots (Q3 2016)
  • Presented LOTAR EAS activities and pilots to CAE vendors and service providers
  • Presented LOTAR EAS activities at various NAFEMS local events
  • Defined training materials for AP209 ed2 for various audiences
  • Outlined the  structure of Part 600 “Fundamentals and Concepts for LOTAR of EAS information"


  • Engaged NAFEMS Simulation Data Management Working Group for collaboration
  • Submitted first LOTAR webpage for EAS WG
  • Selected test model for LOTAR use cases in initial phases
  • Outlined business requirements for use case
  • Reviewed existing test case models developed for AP209 ed1
  • Defined milestones through 2015
  • Established plan for engaging CAE vendors in supporting EAS
  • Identified other like-minded CAE forums to engage
  • Integrated potential new resources from National Institute of Standards and Technology (NIST)
  • Contracted Keith Hunten to update AP209 ed2 Recommended practices and knowledge transfer
  • Developed the baseline model for LOTAR test model in Phase 1

Figure 4: LOTAR EAS Ultra-Light Glider Test Model


  • Engineering Analysis & Simulation Working Group initiated in April 2014 and officially created in December 2014
  • Identified and prioritized engineering analysis & simulation disciplines and domains
  • Developed and proposed structure for Parts 6XX family
  • Created first draft of business requirements, use cases and working plan related to Phase 1