Downloaded from https://www.everyspec.com MIL-STD-31000A applicable data item descriptions, TDP Option Selection Worksheet (Figure 2) and Contract Data Requirements Lists (CDRL) in the contract, purchase orders, and Military Interdepartmental Procurement Requests (MIPRs). 5.3.2.1 Type 2D: 2-Dimensional Technical Data Package (2D TDP) – A 2D TDP is based on 2 dimensional engineering drawings. 2D engineering drawings can be manually generated, or generated in a digital form. 5.3.2.2 Type 3D: 3-Dimensional Technical Data Package (3D TDP)- A 3D TDP is based on computer based 3–dimensional models that are capable of generating, when required, 2D engineering drawings.
Type 3D TDPs shall consist of one of the following type subsets: a. 3D digital models only b. 3D digital models with associated 2D drawings 5.3.3 TDP elements. TDP Elements describes the various component parts of the TDP and are defined as follows: 5.3.3.1 Conceptual design drawings/models. Conceptual design data shall be prepared to define design concepts in graphic form, and include appropriate textual information required for analysis and evaluation of those concepts. If 3D CAD Models form the design definition without 2D drawings they shall include the following information: a) A geometric representation defining the physical shape of the product.
b) Annotated dimensions defining the overall envelope or boundary size of the component. c) Annotated note that defines all default tolerances or appropriate global Geometric Dimensioning and Tolerancing (GD&T) as it applies to the product at the design level. general annotated note and/or in the system parameters of the model. d) All material information that is known at the level shall be called out in either a e) Finish requirements should be called out in a general annotated note. product definition.
This information should include the following as a minimum; Part Number, Contract Number, Design Authority CAGE Code, Drawn By, Approved By, ITAR statements, Distribution statements, Classification requirements, Revision Level and Revision Date. f) Information typically referred to as “title block” information shall be noted in the 5.3.3.2 Developmental design drawings/models and associated lists. Developmental design drawings/models and associated lists shall be prepared to provide sufficient data to support the analysis of a specific design approach and the fabrication of prototype material for test or experimentation.
Data and lists required to present a design approach may vary from simple sketches to complex drawings, or may be a combination of both. If 3D CAD Models are required at the Developmental Level they shall include the following information: 15