prEN 9300-125
(Main)Aerospace series - LOTAR - Part 125: Explicit CAD assembly structure with Graphic Product and Manufacturing Information (PMI)
Aerospace series - LOTAR - Part 125: Explicit CAD assembly structure with Graphic Product and Manufacturing Information (PMI)
1.1 Introduction
This document defines the requirements for the long-term digital preservation of the presentation of Product and Manufacturing Information (PMI) with their possible links to the 3D explicit shape and geometry of CAD assembly structure. The goal is to preserve this 3D information, without loss, with respect to the geometry produced by the original CAD system, following the principles laid down in EN 9300 003 “Fundamentals and Concepts”.
This will allow the retrieval of the assembly structure including the placement information.
This standard extends EN 9300-115 “Explicit CAD Assembly Structure” by including assembly level PMI.
PMI for the assembly structure can be recorded in the same file as the geometry, can be in a nested assembly structure or the PMI will be contained in its own separate file (Side-Car).
The PMI elements shall be presented on the graphic level only (i.e. polyline, tessellated).
1.2 Out of scope
The following is outside the scope:
- The archiving of assembly Form Features.
- Semantic PMI representation is out of scope for this document.
- The geometry defined at assembly level is out of scope for this document.
(This document covers PMI at the assembly level only.)
Luft- und Raumfahrt - LOTAR - Teil 125: Explizite CAD Baugruppenstruktur mit Grafik Produkt- und Herstellungsrelevanten Informationen
Série aérospatiale - LOTAR - Archivage long terme et récupération des données techniques produits numériques telles que CAO 3D et PDM - Partie 125 : Structure d'assemblage explicite CAO avec données graphiques de produit et de fabrication (PMI)
Aeronavtika - LOTAR - 125. del: Eksplicitna struktura sestavljanja CAD z informacijami o grafičnem izdelku in proizvodnji (PMI)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 9300-125:2022
01-september-2022
Aeronavtika - LOTAR - 125. del: Eksplicitna struktura sestavljanja CAD z
informacijami o grafičnem izdelku in proizvodnji (PMI)
Aerospace series - LOTAR - Part 125: Explicit CAD assembly structure with Graphic
Product and Manufacturing Information (PMI)
Luft- und Raumfahrt - LOTAR - Teil 125: Explizite CAD Baugruppenstruktur mit Grafik
Produkt- und Herstellungsrelevanten Informationen
Série aérospatiale - LOTAR - Archivage long terme et récupération des données
techniques produits numériques telles que CAO 3D et PDM - Partie 125 : Structure
d'assemblage explicite CAO avec données graphiques de produit et de fabrication (PMI)
Ta slovenski standard je istoveten z: prEN 9300-125
ICS:
01.110 Tehnična dokumentacija za Technical product
izdelke documentation
35.240.30 Uporabniške rešitve IT v IT applications in information,
informatiki, dokumentiranju in documentation and
založništvu publishing
49.020 Letala in vesoljska vozila na Aircraft and space vehicles in
splošno general
oSIST prEN 9300-125:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 9300-125:2022
DRAFT
EUROPEAN STANDARD
prEN 9300-125
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2022
ICS 01.110
English Version
Aerospace series - LOTAR - Part 125: Explicit CAD
assembly structure with Graphic Product and
Manufacturing Information (PMI)
Série aérospatiale - LOTAR - Archivage long terme et Luft- und Raumfahrt - LOTAR - Teil 125: Explizite CAD
récupération des données techniques produits Baugruppenstruktur mit Grafik Produkt- und
numériques telles que CAO 3D et PDM - Partie 125 : Herstellungsrelevanten Informationen
Structure d'assemblage explicite CAO avec données
graphiques de produit et de fabrication (PMI)
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee ASD-
STAN.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 9300-125:2022 E
worldwide for CEN national Members.
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Contents
European foreword . 4
1 Scope . 5
1.1 Introduction . 5
1.2 Out of scope . 5
2 Normative references . 5
3 Terms, definitions and abbreviations . 6
4 Applicability . 6
5 Business specifications for the long-term archiving and retrieval of the explicit CAD
assembly structure with PMI . 6
5.1 Use cases . 6
5.1.1 General . 6
5.1.2 UC1: one file with assembly structure, geometry and PMI . 6
5.1.3 UC2: Assembly Structure with PMI stored in one file separate from the Geometry . 6
5.1.4 UC3: Nested structure and assembly file with PMI in the structure file . 7
5.1.5 UC4: Nested structure and assembly files with PMI side-car file . 7
6 Essential Information for explicit CAD assembly structure with PMI . 8
6.1 General . 8
6.2 Associativity between PMI and Geometric Shape Representation . 8
6.2.1 General . 8
6.2.2 Part with PMI . 8
6.2.3 Assembly files with PMI with references to sub-assembly and shape element of part
geometry . 8
6.3 Saved View . 9
7 Definition of Core Model for an explicit CAD assembly structure with PMI . 10
8 Verification rules of an explicit CAD assembly structure with PMI . 11
8.1 Introduction . 11
8.2 Level of Verification . 11
9 Validation properties . 12
9.1 Introduction . 12
9.2 Levels of Validation . 13
9.3 Comparison of the PMI Validation Properties (PMIVP) . 14
9.4 Results of the Validation . 14
9.4.1 At the ingest process (qualify) . 14
9.4.2 At the retrieval process (comparison) . 14
9.4.3 Status information . 15
9.4.4 Validation reports . 15
Annex A (informative) Ingestion scenarios . 16
A.1 General . 16
A.2 Ingestion scenario 1: One AIP with assembly structure, geometry and PMI . 17
A.3 Ingestion scenario 2: one AIP for the assembly with PMI . 19
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A.4 Scenario 3: one or more AIPs for the assembly with PMI . 21
A.5 Scenario 4: One AIP for the assembly PMI . 23
Bibliography . 25
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European foreword
This document (FprEN 9300-125:2022) has been prepared by the Aerospace and Defence Industries
Association of Europe - Standardization (ASD-STAN).
This document is currently submitted to the Enquiry.
After enquiries and votes carried out in accordance with the rules of this Association, this Standard has
received the approval of the National Associations and the Official Services of the member countries of
ASD-STAN, prior to its presentation to CEN.
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1 Scope
1.1 Introduction
This document defines the requirements for the long-term digital preservation of the presentation of
Product and Manufacturing Information (PMI) with their possible links to the 3D explicit shape and
geometry of CAD assembly structure. The goal is to preserve this 3D information, without loss, with
respect to the geometry produced by the original CAD system, following the principles laid down in
EN 9300-003 “Fundamentals and Concepts”.
This will allow the retrieval of the assembly structure including the placement information.
Figure 1 — Assembly structure and geometric assembly model with PMI
This standard extends EN 9300-115 “Explicit CAD Assembly Structure” by including assembly level PMI.
PMI for the assembly structure can be recorded in the same file as the geometry, can be in a nested
assembly structure or the PMI will be contained in its own separate file (Side-Car).
The PMI elements shall be presented on the graphic level only (i.e. polyline, tessellated).
1.2 Out of scope
The following is outside the scope:
— The archiving of assembly Form Features.
— Semantic PMI representation is out of scope for this document.
— The geometry defined at assembly level is out of scope for this document.
(This document covers PMI at the assembly level only.)
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 9300 (all parts), Aerospace series — LOTAR — LOng Term Archiving and Retrieval of digital technical
product documentation such as 3D, CAD and PDM data
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3 Terms, definitions and abbreviations
For the purposes of this document, the terms, definitions and abbreviations given in EN 9300-007 and
the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
side car
separate file to retain the PMI definition; this file is referenced by the assembly file
4 Applicability
Refer to applicability of prEN 9300-001:2022 “Structure”, Section 4.
5 Business specifications for the long-term archiving and retrieval of the explicit
CAD assembly structure with PMI
5.1 Use cases
5.1.1 General
The following sections record the potential use cases for the archiving of an explicit CAD assembly
structure with PMI. “Appendix A Ingestion scenarios (informative)” identifies the main archiving
scenarios corresponding to these four use cases.
5.1.2 UC1: one file with assembly structure, geometry and PMI
This Use Case represents a scenario with a single file containing the assembly structure, geometry and
PMI.
Figure 2 — One file with assembly structure, geometry and PMI
5.1.3 UC2: Assembly Structure with PMI stored in one file separate from the Geometry
This Use Case represents a scenario with a single file containing the assembly structure and PMI
separate from the geometry. The Geometry will be stored in separate file(s).
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Figure 3 — Separate file for Assembly Structure and PMI
5.1.4 UC3: Nested structure and assembly file with PMI in the structure file
This Use Case represents a scenario with nested files with PMI contained in the assembly structure. The
PMI is contained in the file representing the node that is defining the context of the PMI.
Figure 4 — Nested structure and assembly file with PMI in the structure file
5.1.5 UC4: Nested structure and assembly files with PMI side-car file
This Use Case represents a scenario where the PMI is contained in a separate Side-car file.
Figure 5 — Nested structure and assembly files with PMI side-car file
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6 Essential Information for explicit CAD assembly structure with PMI
6.1 General
The following list describes the essential information for a CAD assembly with PMI structure. The
essential information are captured, verified and validated through the core model and the rules. The
core model is described in the section “7 Definition of Core Model for an explicit CAD assembly
structure” and the rules are described in the sections “8 Verification rules of CAD explicit assembly with
PMI structure” and “9 Validation rules of an explicit CAD assembly with PMI structure”. Bring in
Part 120 essential information attributes.
6.2 Associativity between PMI and Geometric Shape Representation
6.2.1 General
The same technique to associate between 3D PMI and the related Shape Element at the part level that
maintains the relationship created by the user when they attach PMI to a geometric model is also used
at the assembly level.
6.2.2 Part with PMI
Reference prEN 9300-120:2022, Clause 6 for Essential Information with the following additions:
At the part level PMI referencing shape element of part geometry. (Ref. Figure 6: Illustration of PMI at
the Part Level).
Figure 6 — Illustration of PMI at the Part Level
6.2.3 Assembly files with PMI with references to sub-assembly and shape element of part
geometry
A path should be defined for all assemblies and part occurrences applicable to each shape element as
required. (ref Figure 7: Illustration of PMI at the Assembly Level).
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Figure 7 — Illustration of PMI at the Assembly Level
6.3 Saved View
The saved view complies with the following definition taken from ISO 16792.
Saved views
Saved views of a design model may be defined to facilitate presentation of the model and its annotation.
A saved view shall have an identifier, be retrievable on demand, contain a model coordinate system that
denotes the direction of the view relative to the model and may contain one or more of the annotation
plane(s), a selected set of annotation, or a selected set of geometry.
NOTE The term “saved view” will be used in this Part. The following list of equal terms might help in
technical discussions:
— STEP Saved View
— CATIA V5 Capture
— NX Work view
— Pro/Engineer/Creo Model Display/Combination State
— Autodesk View face
At assembly level, the saved view is stored in the file of the assembly PMI. So, the saved view is directly
linked to the annotation plane, the clipping plane or the assembly PMI. But the selected set of geometry,
part occurrence or product occurrence can be defined in a separate file as defined in the section 5. So
the reference and the path from the saved view to these elements shall be kept.
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Figure 8 — Illustration of 2 saved views at assembly level
7 Definition of Core Model for an explicit CAD assembly structure with PMI
The geometric assembly elements shall be represented in a manner that preserves the essential
information of assembly PMI presented as polyline curves or as tessellated curves and surfaces. The
requirements in the following sections ensure a method that is tool agnostic. The core model for this
part consists of graphical presentation of PMI.
The core model is defined by ISO 10303-242 “Managed 3D Model Based Engineering”. External Element
Reference is based on ISO 10303-21 and will be compatible with future implementations. This core
model is defined within ISO 10303-514 “Advanced boundary representation”.
ISO 10303-519 “Geometric Tolerance” AIC describes the PMI model used in this standard. The following
topics are described in the CAx-IF “Recommended Practices for the Representation and Presentation of
Product & Manufacturing Information (PMI) (AP242)”:
— Names for the geometric curve set
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— Styling of the Annotation
— Identification of the geometry to which the PMI information relates
— Organizing Graphic Presentations in Views
— Linking the Graphic Presentation to the Geometry
— Handling of Graphic Presentation
— Carry the “user name” of the annotation
— Capture the presented PMI type
— Filled elements of the annotation
— Stroked and outline elements of the annotation
— Validation Properties
NOTE For more details for the essential information of the explicit CAD Assembly Structure refer to
EN 9300-115.
In addition, the document “Recommended Practices for External Element References” defines the core
model for the file reference.
8 Verification rules of an explicit CAD assembly structure with PMI
8.1 Introduction
As described in “Authentication and Verification” (EN/NAS 9300-005), verification and validation are
the two basic qualification methods to reduce the risk of losing essential information during Long Term
Archiving. The verification of the source and the target CAD model are not required in this standard, but
the quality of the exported file in the archival format is strongly dependent of the quality of the source
CAD model. Lack of verification creates a risk that the retrieval process will fail. The verification for
Product and Manufacturing Information described in this chapter concerns only the archival file during
the ingest process (EN/NAS 9300-012).
To improve the longevity of the archive, companies may decide to add new verification rules and to
check a selection of the archived files. In this case, the company may decide to archive the new
verification report, and according to the result, to carry out the appropriate action to ensure the long
term preservation of the CAD archived information.
If a verification of the native target CAD model is impl
...
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