NASA J. F. Taylor, Inc. AIAA Australian DSTO

Flight Dynamic Model Exchange using XML

Establishment of the Internet and rapid adoption of the World-Wide Web has led to the definition of standards for the electronic exchange of many types of information.
Other science disciplines (including mathematics, chemistry and biology) are moving toward data exchange standards, based in part on a Web technology known as Extensible Markup Language or XML. These standards allow rapid dissemination of molecular models, DNA sequences, and mathematical descriptions.

A 2002 American Institute of Aeronautics and Astronautics (AIAA) paper estimated potential savings of over $ 6 M in productivity gains and reduced simulator down-time for a single aircraft type per year from adopting a standard distribution medium for vehicle model updates.

An AIAA standards working group has developed an "application," or grammar of XML to support the exchange of aircraft simulation flight dynamic models (some simple examples are found here). The Dynamic Aerospace Vehicle Exchange Markup Language (DAVE-ML) follows the ANSI/AIAA S-119-2011 standard for simulation axes systems, variable names, and function table data descriptions.

A reference manual for the latest release version of DAVE-ML can be viewed on-line here or downloaded as a PDF file here (about 300 KB).

Inside TIFS

DAVE-ML improves simulation productivity
within collaborative teams

HL-20 image

DAVE-ML ensures rapid and accurate aero model exchange with automatic verification

The DAVE-ML project goal is to develop an XML application to encode complete flight vehicle dynamic models in a facility- and language-independent, consistent way, to expedite model exchange and validation between different simulation facilities and tools.

Motto: "Rehost in minutes, not months!"

The development of DAVE-ML is an informal, cooperative effort between government agencies and aerospace industry representatives via the AIAA Modeling and Simulation Technical Committee. Current voluntary participants include NASA Langley Research Center, NASA Ames Research Center, NASA Johnson Space Center, NASA Marshall Space Flight Center, NASA Dryden Flight Research Center, Australia's Defence Science and Technology Organisation, and J.F. Taylor, Inc..

Get Involved!
October 2011
  • An update was given to the modeling and simulation community on the new ANSI/AIAA S-119 standard and it's possible financial benefits was given to the 2011 MODSIM conference in Virginia Beach, VA. Slides are available here.
  • A formal NASA report detailing the results of an assessment of S-119 sponsored by the NASA Engineering and Safety Center has been released as a two-volume report; see the Papers page for more information.
July 2011
  • Version 2.0.2 of the DAVE-ML DTD and reference manual is now available. This includes some textual changes in the reference manual (for version 2.0.1) and a slight reordering of the DTD ENTITY declarations (for version 2.0.2).
March 2011
  • Version 2.0 of the DAVE-ML DTD and reference manual is now available.
  • On March 22, 2011, the draft AIAA standard received final publication approval by the American National Standards Institute. It is available for free download by AIAA members and can be ordered by others for a nominal fee.
February 2011
  • On February 18, 2011, the draft AIAA standard received final approval by the AIAA Standards Executive Council and will soon be submitted to ANSI.
  • Updated the Future Plans page to reflect a better roadmap, thanks to Geoff Brian's coaxing.
  • Updated the DAVEtools web page; this Java package for exploring DAVE-ML is available as open source from NASA.
January 2011
  • The US 1976 Standard Atmosphere is available in DAVE-ML here.
  • Version 2, Release candidate 4 of the DTD can be found on the DTD page. Changes are the result of recommendations from an internal NASA assessment of the draft AIAA standard (including DAVE-ML) and include mandatory IDs for all defined tables and support for limiting variable ranges.
December 2010
  • Second public comment period on the draft AIAA standard ended Dec. 29. Awaiting news from AIAA on any received comments.
Previous News...

Start Here – Introduction

Primer Presentation
(PDF slides, 1.07 MB)

Papers about DAVE-ML

Document Type Definitions

Example models


Draft AIAA standards documents

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Last modified Fri, 14-Oct-2011