ISO 4358:2023

Test methods for civil multi-copter unmanned aircraft system

This document specifies test methods for civil electric multi-copter unmanned aircraft systems (UAS). This document is intended to be a general standard for testing the overall UAS functionality with the support of subsystems. It is applicable to the category of civil electric multi-copter UAS with maximum take-off mass (MTOM) level I to level V according to ISO 21895. The configuration control and subsystem (e.g. energy system and flight control system tests) test methods are out of the scope of this document. In addition, test methods for operations in snow and icing conditions are not included either, manufacturers have procedures identified to cope with flight in those conditions.

Méthodes d'essai pour les multicoptères civils télépilotés

General Information

• Status: Published
• Publication Date: 03-May-2023
• 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: 6060 - International Standard published
• Start Date: 04-May-2023
• Due Date: 04-Feb-2023
• Completion Date: 04-May-2023

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 4358
First edition
2023-05
Test methods for civil multi-copter
unmanned aircraft system
Méthodes d'essai pour les multicoptères civils télépilotés
Reference number
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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or ISO’s member body in the country of the requester.
ISO copyright office
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Published in Switzerland
ii
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General principles . 1
4.1 Test purpose . 1
4.2 Test conditions and requirements . 2
4.2.1 Technical document . 2
4.2.2 Test article . . 2
4.2.3 Equipment and instruments . 2
4.2.4 Personnel requirements . 2
4.3 Test environmental requirements . 2
4.4 Test interruption and recovery. 2
4.5 Test outline . 3
4.6 Test report . 3
5 Test methods . 3
5.1 Test item . 3
5.2 Basic inspection . 5
5.2.1 Completeness . 5
5.2.2 Appearance . 5
5.2.3 Size . 5
5.2.4 Weight and centre of gravity . 5
5.2.5 Moving and rotating parts check . 5
5.2.6 Connectors . 6
5.3 Functional inspection and testing . 6
5.3.1 Identification . 6
5.3.2 Route loading . 6
5.3.3 Self-test . 6
5.3.4 Information display . 6
5.3.5 Data record . 6
5.3.6 Return to home . 6
5.3.7 Automatic obstacle avoidance . 7
5.3.8 Typical failure protection . 7
5.3.9 Take-off/launch and landing/recovery . 7
5.3.10 Warning . 7
5.3.11 Locking and starting of the motor . 7
5.3.12 Control mode switching . 7
5.4 Flight performance test . 8
5.4.1 Maximum take-off weight . 8
5.4.2 Maximum flight range . 8
5.4.3 Maximum flight altitude . 8
5.4.4 Maximum horizontal flight speed. 9
5.4.5 Maximum steady climb rate . 9
5.4.6 Altitude hold performance . 9
5.4.7 Speed hold performance . 10
5.4.8 Flight endurance . 10
5.4.9 Fixed-point hovering . .12
5.4.10 Positioning navigation .12
5.4.11 Trajectory tracking accuracy .12
5.4.12 Capability of wind resistance . 13
5.5 Navigation system test . 13
iii
5.5.1 Static attitude accuracy.13
5.5.2 Static positioning accuracy . 13
5.6 Data link system test .13
5.6.1 Remote control distance and telemetry distance .13
5.6.2 Information transmission distance . 14
5.7 Environmental test . 14
5.7.1 High temperature . 14
5.7.2 Low temperature .15
5.7.3 Rainfall . 16
5.7.4 Humidity and heat. 16
5.7.5 Vibration . 16
5.7.6 Shock . 16
5.8 Electromagnetic compatibility. 16
5.8.1 General principles . 16
5.8.2 Emission test . 17
5.8.3 Immunity . 18
Annex A (informative) Test procedure of remote control and telemetry distance .24
Bibliography .26
iv
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
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