EN 16602-70-09:2015

SLOVENSKI STANDARD
01-april-2015
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Space product assurance - Measurements of thermo-optical properties of thermal control
materials
Raumfahrtproduktsicherung - Messung der thermo-optischen Eigenschaften von
Materialien zur Thermalkontrolle
Assurance produit des projets spatiaux - Mesures des propriétés thermo-optiques des
matériaux de contrôle thermique
Ta slovenski standard je istoveten z: EN 16602-70-09:2015
ICS:
17.200.01 Termodinamika na splošno Thermodynamics in general
49.140 Vesoljski sistemi in operacije Space systems and
operations
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 16602-70-09
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2015
ICS 49.140
English version
Space product assurance - Measurements of thermo-optical
properties of thermal control materials
Assurance produit des projets spatiaux - Mesures des Raumfahrtproduktsicherung - Messung der thermo-
propriétés thermo-optiques des matériaux de contrôle optischen Eigenschaften von Materialien zur
thermique Thermalkontrolle
This European Standard was approved by CEN on 11 October 2014.

CEN and CENELEC 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. Up-to-date lists and bibliographical references concerning
such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN and CENELEC
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN and CENELEC member into its own language and notified to the CEN-CENELEC Management Centre
has the same status as the official versions.

CEN and CENELEC members are the national standards bodies and national electrotechnical committees of Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia,
Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

CEN-CENELEC Management Centre:
Avenue Marnix 17, B-1000 Brussels
© 2015 CEN/CENELEC All rights of exploitation in any form and by any means reserved Ref. No. EN 16602-70-09:2015 E
worldwide for CEN national Members and for CENELEC
Members.
Table of contents
Foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 8
3 Terms, definitions and abbreviated terms . 9
3.1 Terms defined in other standards . 9
3.2 Terms specific to the present standard . 9
3.3 Abbreviated terms. 9
4 Requirements . 10
4.1 Preparatory conditions . 10
4.1.1 Hazards, health and safety precautions . 10
4.1.2 Preparation of samples . 10
4.1.3 Facilities . 11
4.2 Selection of test methods. 11
4.3 Quality assurance . 12
4.3.1 Data . 12
4.3.2 Calibration . 12
4.4 Audit of measurement equipment . 12
4.4.1 General . 12
4.4.2 Audit of the system (acceptance) . 13
4.4.3 Annual regular review (maintenance) of the system . 13
4.4.4 Special review . 13
Annex A (normative) Evaluation report of the measurement of thermo-
optical properties of thermal control materials– DRD . 14
A.1 DRD identification . 14
A.1.1 Requirement identification and source document . 14
A.1.2 Purpose and objective . 14
A.2 Expected response . 14
A.2.1 Scope and content . 14
A.2.2 Special remaks . 14
Annex B (normative) Audit / review report for the measurement equipment
of thermo-optical properties of thermal control materials - DRD . 15
B.1 DRD identification . 15
B.1.1 Requirement identification and source document . 15
B.1.2 Purpose and objective . 15
B.2 Expected response . 15
B.2.1 Scope and contents . 15
B.2.2 Special remarks . 15
Annex C (informative) Test methods . 16
C.1 Format . 16
C.2 Solar absorptance using spectrometer (α ) . 16
s
C.2.1 General . 16
C.2.2 Configuration of samples. 16
C.2.3 Test apparatus and setting up . 17
C.2.4 Test process and measurement . 17
C.2.5 Calculation of absorptance . 17
C.3 Comparative test method (α ) . 18
p
C.3.1 General . 18
C.3.2 Configuration of samples. 18
C.3.3 Test apparatus and setting up . 19
C.3.4 Test process and measurement . 19
C.3.5 Calculations . 19
C.4 Infrared emittance using thermal test method (e ) . 20
h
C.4.1 General . 20
C.4.2 Configuration of samples. 20
C.4.3 Test apparatus and setting up . 20
C.4.4 Test process and measurement . 20
C.4.5 Calculations of total hemispherical emittance . 22
C.5 Infrared emittance using IR spectrometer (e ) . 23
h
C.5.1 General . 23
C.5.2 Configuration of samples. 23
C.5.3 Test apparatus and setting up . 23
C.5.4 Test process and measurement . 23
C.5.5 Calculation of emittance . 24
C.6 Infrared emittance using portable equipment (e ) . 24
n
C.6.1 General . 24
C.6.2 Configuration of samples. 24
C.6.3 Test apparatus and setting up . 25
C.6.4 Test process and measurement . 25
C.6.5 Calculation of the normal emittance . 25
Bibliography . 26

Figures
Figure C- 1: Standard sample substrate . 21

Foreword
This document (EN 16602-70-09:2015) has been prepared by Technical
Committee CEN/CLC/TC 5 “Space”, the secretariat of which is held by DIN.
This standard (EN 16602-70-09:2015) originates from ECSS-Q-ST-70-09C.
This European Standard shall be given the status of a national standard, either
by publication of an identical text or by endorsement, at the latest by July 2015,
and conflicting national standards shall be withdrawn at the latest by July 2015.
Attention is drawn to the possibility that some of the elements of this document
may be the subject of patent rights. CEN [and/or CENELEC] shall not be held
responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CEN by the
European Commission and the European Free Trade Association.
This document has been developed to cover specifically space systems and has
therefore precedence over any EN covering the same scope but with a wider
domain of applicability (e.g. : aerospace).
According to the CEN-CENELEC Internal Regulations, the national standards
organizations of the following countries are bound to implement this European
Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
Introduction
The thermo-optical properties of materials are of importance to enable the
calculation of the thermal housekeeping and radiative heat transfer.
This Standard describes the methodology, instruments, equipment and
samples, used to calculate the thermo-optical properties of thermal-control
materials, i.e. solar absorptance [αs or αp] and the infrared emittance [eh or en].
In general this procedure has been written in connection with instruments and
equipment available at ONERA, INTESPACE and ESTEC; however, any
supplier is encouraged to built up his own instrument or equipment provided
the accuracy of the results is equivalent to the one specified herein.
In this Standard, the supplier is identified as the entity that performs the test.
Scope
This Standard describes the methodology, instruments, equipment and
samples, used to calculate the thermo-optical properties of thermal-control
materials.
The following test methods are detailed in this Standard including the
configuration of samples and calculations:
• Solar absorptance using spectrometer (αs) - (see Annex C.2).
• Comparative test method (αp) - (see Annex C.3).
• Infrared emittance using thermal test method (eh) - (see Annex C.4).
• Infrared emittance using IR spectrometer (eh) - (see annex C.5).
• Infrared emittance using portable equipment (en) - (see Annex C.6).

This standard may be tailored for the specific characteristics and constraints of a
space project in conformance with ECSS-S-ST-00.

Normative references
The following normative documents
...