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BS EN 4660-004:2019

$167.15

Aerospace series. Modular and open avionics architectures – Packaging

Published By Publication Date Number of Pages
BSI 2019 40
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This European standard establishes uniform requirements for Packaging for the Common Functional Modules (CFM) within an Integrated Modular Avionic (IMA) system. It comprises the module physical properties and the Module Physical Interface (MPI) definitions together with guidelines for IMA rack and the operational environment.

The characteristics addressed by the Packaging Standard are:

Interchangeability:

  • For a given cooling method all modules conforming to the packaging standard will function correctly when inserted into any rack slot conforming to the standard for the cooling method.

  • All modules conforming to the Module Physical Interface (MPI) definitions for connector, IED and cooling interface will function correctly when inserted into any rack slot conforming to the same MPI definition.

Maintainability:

  • All modules are easily removable at first line.

  • No special tools required at first line.

  • No manual adjustment is necessary when installing modules. No tool is required for installation or removal of the modules.

  • Mechanical keying is provided that prevents insertion of a module into a rack slot that may cause an unsafe condition.

The Module Physical Interface definition, contained within this standard, does not include the properties of the signalling used in the optical interface (e. g. wavelength). These are covered in EN 4660-003.

PDF Catalog

PDF Pages PDF Title
2 undefined
6 Introduction
7 1 Scope
2 Normative references
9 3 Terms and definitions and abbreviations
3.1 General
3.2 Abbreviations
10 3.3 Precedence
3.4 Terms and definitions
3.4.1 General terms
11 3.4.2 Module mechanical items
13 3.4.3 Tolerances
4 Generic module specification
4.1 Introduction
14 4.2 Module description
4.3 Module physical specification
4.3.1 Module envelope: height, length, width
15 4.3.2 Module distortion
4.3.3 Module mass
4.3.4 Module insertion and extraction
4.3.5 Electrical safety
16 4.3.6 Materials
4.3.6.1 Use of flammable materials
4.3.6.2 Finishes and protective treatments
17 4.3.7 Module Identification
4.3.7.1 General
4.3.7.2 Module key code
4.3.7.3 Module part number
18 4.3.7.4 Module certification mark
4.3.7.5 Module name and type
4.3.7.6 Vendor’s module identification
4.3.7.7 Module serial number
4.3.7.8 Module date code
4.4 Module physical interface — connector
4.4.1 General
19 4.4.2 Connector shell dimensions
4.4.3 Module connector shell location
4.4.4 Connector cavities, inserts, ferrules and contacts
4.4.4.1 General
4.4.4.2 Identification
20 4.4.4.3 Insert allocation
4.4.4.4 “Guided Optical” inserts and ferrules
22 4.4.4.5 Electrical signal contacts
4.4.4.6 Electrical – power contacts
4.4.5 Mating sequence
4.4.6 Guide pins and sockets
4.4.7 Keying
23 4.4.8 Environmental protection and cleaning
4.5 Module physical interface cooling
24 4.6 Module physical interface – Insertion extraction device
5 Module mechanical tests
5.1 General
5.2 Master gauge test
5.3 Module insertion and extraction
5.3.1 General
5.3.2 Module insertion
25 5.3.3 Module extraction
5.3.4 Durability
5.3.5 Keying pin integrity
5.3.6 Module header torque
5.3.7 Module cantilever load
26 6 Guidelines for a rack slot
6.1 General
6.2 Rack slot design requirements
6.2.1 Slot description
6.2.2 Slot physical dimensions
6.2.3 Materials
6.2.4 Anodic treatment and plating
6.2.5 Slot marking
6.2.5.1 Slot identifier
6.2.5.2 Module key code
6.3 Connector interface
27 6.4 Cooling requirements
6.5 Relationship between cooling, connector and IED rack interfaces
7 Typical modular avionics environment
7.1 General
28 7.2 Ambient pressure (altitude)
7.3 Humidity
29 7.4 High and low temperatures
7.4.1 General
7.4.2 Temperature environmental conditions
30 7.4.3 Storage temperatures
7.5 Thermal shocks
7.6 Salt spray
7.7 Vibrations
7.7.1 General
31 7.7.2 Sinusoidal vibrations
7.7.3 Random vibrations
7.7.4 Gunfire vibrations
7.7.5 Combined vibrations (Helicopter)
32 7.8 Accelerations
7.8.1 General
7.8.2 Rotational accelerations
7.8.3 Transversal accelerations
7.9 Mechanical shocks
7.9.1 General
33 7.9.2 Functional shocks
7.9.3 Bench handling
7.9.4 Crash hazard
7.9.5 Catapult launch, arrested landing
7.10 Contamination resistance
34 7.11 Flame resistance
7.12 Fungus resistance
7.13 Rain
7.14 Acoustic noise
7.15 Electromagnetic environment
35 7.16 Explosive atmosphere
7.17 Nuclear, Biological and Chemical (NBC) hazards
7.17.1 General
7.17.2 Nuclear threats
36 7.17.3 Nuclear radiation
7.17.3.1 General
7.17.3.2 Nuclear hardening
7.17.4 Biological and chemical
37 7.19 Single event upset/multiple bit upset
7.20 Module tempest
38 Annex A (informative)Standard evolution form
BS EN 4660-004:2019
$167.15