ISO 5332:2023

INTERNATIONAL ISO
STANDARD 5332
First edition
2023-10
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
Reference number
© ISO 2023
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ii
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
Foreword
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iv
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-altitude 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
...