Application module: System breakdown ISO/TS 10303-1214:2004(E)
© ISO

Cover page
Table of contents
Copyright
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviations

4 Information requirements
   4.1 Required AM ARM
   4.2 ARM entity definitions
5 Module interpreted model
   5.1 Mapping specification
   5.2 MIM EXPRESS short listing
     5.2.1 MIM entity definitions

A MIM short names
B Information object registration
C ARM EXPRESS-G   EXPRESS-G
D MIM EXPRESS-G   EXPRESS-G
E Computer interpretable listings
Bibliography
Index

4 Information requirements

This clause specifies the information requirements for the System breakdown application module. The information requirements are specified as the Application Reference Model (ARM) of this application module.

NOTE 1  A graphical representation of the information requirements is given in Annex C.

NOTE 2  The mapping specification is specified in 5.1. It shows how the information requirements are met by using common resources and constructs defined or imported in the MIM schema of this application module.

The following EXPRESS specification begins the System_breakdown_arm schema and identifies the necessary external references.

EXPRESS specification:

*)
SCHEMA System_breakdown_arm;
(*

4.1 Required AM ARM

The following EXPRESS interface statement specifies the elements imported from the ARM of another application module.

EXPRESS specification:

*)
USE FROM Product_breakdown_arm;    --  ISO/TS 10303-1248
(*

NOTE 1   The schemas referenced above are specified in the following part of ISO 10303:

Product_breakdown_arm ISO/TS 10303-1248

NOTE 2   See Annex C, Figures C.1and C.2 for a graphical representation of this schema.

4.2 ARM entity definitions

This subclause specifies the ARM entities for this module. Each ARM application entity is an atomic element that embodies a unique application concept and contains attributes specifying the data elements of the entity. The ARM entities and definitions are specified below.

4.2.1 System_breakdown   EXPRESS-GMapping table

A System_breakdown is a type of Breakdown that identifies a partitioning of a system into a set of related elements so as to form explicit, assembly - component views that comprise the system elements.

The assembly-component view is represented by System_element_usage instances relating the system elements in the breakdown which are represented by System_elements.

EXAMPLE    A system breakdown provides a decomposition of an aircraft in terms of high-level mechanisms such as fuel system or flight control system - which might, in the second example, further decompose into low-level systems such as autopilot system and instrument landing system.

EXPRESS specification:

*)
ENTITY System_breakdown
  SUBTYPE OF (Breakdown);
END_ENTITY;
(*

4.2.2 System_breakdown_context   EXPRESS-GMapping table

A System_breakdown_context is a type of Breakdown_context that is a membership relationship between a System_element and a System_breakdown of which the system element is a member.

EXAMPLE    A heating system is a member of the breakdown of a climate control system.

EXPRESS specification:

*)
ENTITY System_breakdown_context
  SUBTYPE OF (Breakdown_context);
  SELF\Breakdown_context.breakdown : System_breakdown_version;
  SELF\Breakdown_context.breakdown_element : System_element_definition;
END_ENTITY;
(*

Attribute definitions:

breakdown: the version of the System_breakdown of which the System_element is a member.

breakdown_element: the view of the version of the System_element that is a member of the System_breakdown.

4.2.3 System_breakdown_version   EXPRESS-GMapping table

A System_breakdown_version is a type of Breakdown_version that identifies a version of a System_breakdown .

EXAMPLE    A logistics engineer modifies the current systems breakdown for an aircraft and associated support equipment on the basis of results from a level of repair analysis.

EXPRESS specification:

*)
ENTITY System_breakdown_version
  SUBTYPE OF (Breakdown_version);
  SELF\Breakdown_version.of_product : System_breakdown;
END_ENTITY;
(*

Attribute definitions:

of_product: the System_breakdown of which the System_breakdown_version is a version.

4.2.4 System_element   EXPRESS-GMapping table

A System_element is a type of Breakdown_element that identifies the elements in one or more System_breakdown objects.

EXPRESS specification:

*)
ENTITY System_element
  SUBTYPE OF (Breakdown_element);
END_ENTITY;
(*

4.2.5 System_element_definition   EXPRESS-GMapping table

A System_element_definition is a type of Breakdown_element_definition that identifies a view of a version (System_element_version) of a System_element.

EXAMPLE    The collision avoidance system element of a system breakdown is subject to a level of repair analysis to support implementation of optimized maintenance for an aircraft.

EXPRESS specification:

*)
ENTITY System_element_definition
  SUBTYPE OF (Breakdown_element_definition);
  SELF\Breakdown_element_definition.defined_version : System_element_version;
END_ENTITY;
(*

Attribute definitions:

defined_version: the System_element_definition shall only be a view of a System_element.

4.2.6 System_element_usage   EXPRESS-GMapping table

A System_element_usage is a type of Breakdown_element_usage that is a relationship between a System_element_definition and another System_element_definition that is a constituent.

EXAMPLE    In a system breakdown, the fuel system might include a fuel storage system and a fuel injection system as components.

EXPRESS specification:

*)
ENTITY System_element_usage
  SUBTYPE OF (Breakdown_element_usage);
  SELF\Breakdown_element_usage.parent_element : System_element_definition;
  SELF\Breakdown_element_usage.child_element : System_element_definition;
END_ENTITY;
(*

Attribute definitions:

parent_element: the emergent system breakdown element.

child_element: the constituent system breakdown element.

4.2.7 System_element_version   EXPRESS-GMapping table

A System_element_version is a type of Breakdown_element_version that identifies a version of a System_element .

EXAMPLE    A sound engineer changes the details describing the public address system that is an element in a system breakdown of an aircraft.

EXPRESS specification:

*)
ENTITY System_element_version
  SUBTYPE OF (Breakdown_element_version);
  SELF\Breakdown_element_version.of_product : System_element;
END_ENTITY;
(*

Attribute definitions:

of_product: the System_element_version shall only be a version of a System_element .



*)
END_SCHEMA;  -- System_breakdown_arm
(*


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