ISO/FDIS 5332

Civil small and light unmanned aircraft systems (UAS) under low-pressure conditions — Test methods

Aéronefs sans pilote (UAS) civils petits et légers en conditions de basses pressions — Méthodes d'essais

General Information

• Status: Not Published
• ICS: 49.020 - Aircraft and space vehicles in general
• Technical Committee: ISO/TC 20/SC 16 - Unmanned aircraft systems
• Drafting Committee: ISO/TC 20/SC 16/WG 5 - Testing and evaluation
• Current Stage: 5020 - FDIS ballot initiated: 2 months. Proof sent to secretariat
• Start Date: 02-Aug-2023
• Completion Date: 02-Aug-2023

Standards Content (Sample)

ISO/DIS FDIS 5332:2022(E)
ISO/TC 20/SC 16/WG 5
Date: 2023-04-30
Secretariat: ANSI
Civil small and light unmanned aircraft systems (UAS) under low-
pressure conditions — Test methods
FDIS stage

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ISO/DIS FDIS 5332:20222023(E)
© ISO 20222023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this
publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical,
including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can
be requested from either ISO at the address below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
EmailE-mail: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ii © ISO 2022 – All rights reserved
 © ISO 2023 – All rights reserved

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ISO/DIS FDIS 5332:20222023(E)
Contents
Foreword . v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test description . 1
4.1 General . 1
4.2 Test conditions . 1
4.2.1 Standard atmospheric conditions . 1
4.2.2 Test with low temperature and low air pressure . 2
4.2.3 Test with high temperature and low air pressure . 2
4.2.4 Allowed deviation . 3
4.2.5 Duration of exposure . 3
4.2.6 Rate of temperature change . 3
4.2.7 Rate of pressure change . 3
4.3 Test article . 3
4.4 Test apparatus . 3
5 Test procedures . 4
5.1 Preconditioning . 4
5.2 Inspection before tests . 4
5.3 Conditioning . 4
5.4 Recovery . 4
5.5 Inspection after tests . 4
6 Test interruption and recovery . 5
6.1 Interruption due to test chamber malfunction . 5
6.2 Interruption due to test article operation failure . 5
7 Test report . 5
Annex A (Informative) Functional items that can be checked in the test chamber . 6
Annex B (Informative) Example table for test result record . 7
Bibliography . 8

Annex A 6
Annex B 7
© ISO 2023 – All rights reserved iii
© ISO 2022 – All rights reserved iii

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ISO/DIS FDIS 5332:20222023(E)
Bibliography 8
iv
iv © ISO 2022 – All rights reserved
 © ISO 2023 – All rights reserved

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ISO/DIS FDIS 5332:20222023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO
collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documentsdocument should be noted. This document was drafted in accordance
with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawnISO draws attention to the possibility that some of the elementsimplementation of this
document may beinvolve the subjectuse of (a) patent(s). ISO takes no position concerning the evidence,
validity or applicability of any claimed patent rights in respect thereof. As of the date of publication of
this document, ISO had not received notice of (a) patent(s) which may be required to implement this
document. However, implementers are cautioned that this may not represent the latest information,
which may be obtained from the patent database available at www.iso.org/patents. ISO shall not be held
responsible for identifying any or all such patent rights. Details of any patent rights identified during the
development of the document will be in the Introduction and/or on the ISO list of patent declarations
received (see ).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the World
Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles,
Subcommittee SC 16, Unmanned aircraft systems.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
© ISO 2023 – All rights reserved v
© ISO 2022 – All rights reserved v

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ISO/DIS FDIS 5332:20222023(E)
Introduction
The market of civil unmanned aircraft systems (UAS) is developing rapidly. UAS are widely used not only
by consumers, such as for aerial photography, but also for industrial purposes, for example, powerline
inspection, vegetation protection, and environmental monitoring. In high-attitude areas, the demand for
UAS is also increasing. However, there are currently no standards specifically for testing the functional
performance of UAS under such environmental conditions. Therefore, it is necessary to propose a
scientific method to test the UAS under low -air -pressure conditions.
Other elements of the UAS, for example personnel, can also adversely affect low-pressure performance.
Although they are not addressed by this document, they should be taken into consideration when
determining operational suitability.
vi
vi © ISO 2022 – All rights reserved
 © ISO 2023 – All rights reserved

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DRAFT INTERNATIONAL STANDARD
ISO/DIS 5332:2022(E)

Civil small and light unmanned aircraft systems (UAS) under low-
pressure conditions — Test methods
1 Scope
T
...

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 5332
ISO/TC 20/SC 16
Civil small and light unmanned
Secretariat: ANSI
aircraft systems (UAS) under low-
Voting begins on:
2023-08-02 pressure conditions — Test methods
Voting terminates on:
2023-09-27
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 SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 5332:2023(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2023

---------------------- Page: 1 ----------------------
ISO/FDIS 5332:2023(E)
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 5332
ISO/TC 20/SC 16
Civil small and light unmanned
Secretariat: ANSI
aircraft systems (UAS) under low-
Voting begins on:
pressure conditions — Test methods
Voting terminates on:
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: [phone]
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: [e-mail]
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/FDIS 5332:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
  © ISO 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO 2023

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ISO/FDIS 5332:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test description . 1
4.1 General . 1
4.2 Test conditions . 1
4.2.1 Standard atmospheric conditions . 1
4.2.2 Test with low temperature and low air pressure . 2
4.2.3 Test with high temperature and low air pressure . 2
4.2.4 Allowed deviation . . . 3
4.2.5 Duration of exposure . 3
4.2.6 Rate of temperature change . 3
4.2.7 Rate of pressure change . . 3
4.3 Test article . 3
4.4 Test apparatus. 3
5 Test procedures . 3
5.1 Preconditioning . 3
5.2 Inspection before tests . 4
5.3 Conditioning. 4
5.4 Recovery . 4
5.5 Inspection after tests . . 4
6 Test interruption and recovery. 4
6.1 Interruption due to test chamber malfunction . 4
6.2 Interruption due to test article operation failure . 4
7 Test report . 4
Annex A (Informative) Functional items that can be checked in the test chamber .6
Annex B (Informative) Example table for test result record . 7
Bibliography . 8
iii
© ISO 2023 – All rights reserved

---------------------- Page: 3 ----------------------
ISO/FDIS 5332:2023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non­governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use
of (a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed
patent rights in respect thereof. As of the date of publication of this document, ISO had not received
notice of (a) patent(s) which may be required to implement this document. However, implementers are
cautioned that this may not represent the latest information, which may be obtained from the patent
database available at www.iso.org/patents. ISO shall not be held responsible for identifying any or all
such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles,
Subcommittee SC 16, Unmanned aircraft systems.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
  © ISO 2023 – All rights reserved

---------------------- Page: 4 ----------------------
ISO/FDIS 5332:2023(E)
Introduction
The market of civil unmanned aircraft systems (UAS) is developing rapidly. UAS are widely used
not only by consumers, such
...