BS EN 4705:2020

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Aerospace series. Measurement methods regarding the lifetime behaviour of light units in a standardized aircraft-related environment

Published By	Publication Date	Number of Pages
BSI	2020	16

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Description

This document describes the measurement method for the lifetime behaviour of aircraft cabin light units in a standardized aircraft-related environment.

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PDF Pages	PDF Title
2	undefined
6	Introduction
7	1 Scope 2 Normative references 3 Terms, definitions and abbreviations
9	4 Definition of lifetime 4.1 General 4.2 Light unit fails
10	4.3 The brightness of the light unit falls below a defined limit 4.4 The chromaticity of the light unit is out of a defined limit 5 Failure mode identification 5.1 General 5.2 Brightness degradation calculation selection 5.3 Colour degradation
11	6 Operating the light unit 6.1 General
12	6.2 Installation orientation 6.3 Installation condition 6.4 Ambient temperature
13	6.5 Power supply 7 Light measurement 7.1 General 7.2 Measurement method
14	7.3 Measurement uncertainty of long term stability 7.4 Determination of the start value 7.5 Measurement intervals

Additional information

Status	Definitive
Pages	16
Publication Date	2020-03-03
ISBN	978 0 539 04459 1
Standard Number	BS EN 4705:2020
Title	Aerospace series. Measurement methods regarding the lifetime behaviour of light units in a standardized aircraft-related environment
Identical National Standard Of	EN 4705
Descriptors	Temperature, Circuit-breakers, Non-ferrous alloys, Alloys, Nickel alloys, Shape, Diameter, Sleeving (electrical), Durability, Testing, Environmental testing, Testing methods, Electrodes, Melting, Air, Steels, Contrast (optical), Measurement, Cables (electric), Test methods, Aerospace transport, Corrosion tests, Compression set, Mixing, Tear tests, Elastic constants, Elongation, Tensile strength, Density, Hardness testing, Approval testing, Qualification approval, Quality assurance systems, Quality assurance, Synthetic rubber, Natural rubber, Air transport engineering, Aircraft components, Electrical components, Electric cables, Electric conductors, Aluminium, Electrical equipment, Copper
Publisher	BSI
Committee	ACE/1
ICS Codes	49.095 - Passenger and cabin equipment

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BS EN 4705:2020

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