| Title | Model Based Definition in the Military |
| Submission Date | 07/21/2014 |
| Service Agency | NAVAIR |
| Principal | Ray Langlais (for Greg Kilchenstein) |
| Point of Contact | John Schmelzle, john.schmelzle@navy.mil, www.sitaltech.com |
| Maintenance Focus Area | Manufacturing |
| Project Number | NA-14-0001 |
| Description | Model Based Definition (MBD) is the practice of using three-dimensional (3D) digital data (such as solid models, 3D dimensions and associated metadata) within 3D Computer Aided Design (CAD) software to provide specifications for individual components and product assemblies as opposed to utilizing conventional two-dimensional (2D) drawings. The Naval Air Warfare Center Aircraft Division (NAWCAD), Lakehurst, NJ has recently implemented technology which permits artisans to manufacture and inspect parts directly from 3D models. This implementation was done as part of a Commercial Technologies for Maintenance Activities (CTMA) project conducted in 2013. When utilizing MBD, dimensions, tolerances and other engineering information are applied directly to these models. These models are then used as an input into Computer Aided Manufacturing (CAM) equipment such as Computer Numeric Control (CNC) machines and water jet machines as well as into Quality Assurance (QA) equipment such as Coordinate Measuring Machines (CMMs) to directly inspect the part. Additionally, these models can be used for logistics, contracting, and any other department that currently uses engineering drawings. Working directly from a 3D model will reduce cost, increase quality, and decrease the product development schedule. |
| Documentation | CTMA Phase II |
