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• April 19, 2016 Create Date
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Computer-Aided Design Interoperability

The purpose of this Interim Standard is to establish the format and content of two-
dimensional (2D) drawings and three—dimensional (3D) models so that rework of these
products by collaborating organizations is minimized. Adherence to this Interim
Standard will result in enhanced interoperability between organizations exchanging
Computer-Aided Design (CAD) products.
This Interim Standard is applicable to all functions that generate or use 2D drawings and 3D
models (hereinafter called CAD products). The need for this Interim Standard was identified
by the Constellation Program to support near-term milestones and is, therefore, centered
around the current CAD applications used throughout the Constellation Program. This
Interim Standard, therefore, reflects the use of Parametric Technology Corporation’s (PTC’s)
Pro/ENGINEER Wildfire 3.0 as the application into which CAD products will be integrated.
The Interim Standard will be expanded at a later date to bring the benefit of interoperability to
the rest of the Agency by addressing the data exchange between other CAD applications in
more detail.
Some requirements in this Interim Standard are not specific to any CAD application. In this
case, suppliers and recipients of CAD products are to adhere to these requirements in order to
benefit from improved interoperability.
This Interim Standard is approved for use by NASA Headquarters and NASA Centers,
including Component Facilities and Technical and Service Support Centers, and may be cited
in contract, program, and other Agency documents as a technical requirement. This Interim
Standard may also apply to the Jet Propulsion Laboratory or to other contractors, grant
recipients, or parties to agreements only to the extent specified or referenced in their
contracts, grants, or agreements.
Requirements are indicated by the word “shall.” Explanatory or guidance text is indicated in
italics beginning in section 4. Rationale for requirements and guidance is provided in
Appendix A.