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GB/T 45678-2025General requirements for civil tethered unmanned aircraft system (English PDF)

民用系留无人机系统通用要求

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

April 25, 2025

Implementation date

November 1, 2025

Scope

GB/T 45678-2025 is the English-translated version of 民用系留无人机系统通用要求.

GB/T 45678-2025 is the Chinese national standard covering a drone that stays up because power comes up the tether — the airframe, powertrain, electrical and flight control systems, the tether cable and the winch that pays it out and reels it in, the ground power supply whose high voltage direct current is converted on board, the data link, the mission payload, the environmental, reliability and electromagnetic compatibility requirements, and the tests that verify them. First edition, in force from 1 November 2025. Issued on 25 April 2025, it has been in force since 1 November 2025.

Document preview — GB/T 45678-2025

National Standard of the People's Republic of China

ICS: 49.020
Classification: V 36

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

PrefaceIII
1 Scope1
2 Normative references1
3 Terms and Definitions1
4 General Requirements2
4.1 System composition2
4.2 Performance requirements2
4.3 Environmental adaptability requirements3
4.4 Reliability Requirements4
4.5 Security Requirements4
4.6 Testability requirements4
4.7 Maintainability requirements4
4.8 Security requirements5
4.9 Electromagnetic compatibility requirements5
4.10 Requirements for tower connection5
4.11 Human-computer interaction requirements5
4.12 Interchangeability requirements5
4.13 Material requirements5
4.14 Standard Parts Requirements5
5 Tethered Drone6
5.1 Body6
5.2 Powertrain6
5.3 Aircraft electrical system7
5.4 Flight Control and Navigation System7
6 Data Link8
6.1 Function8
6.2 Performance8
7 Ground Equipment8
7.1 Tethered Cable8
7.2 Pay-off and retracting device9
7.3 Ground Control System9
7.4 Ground Power Supply System9
8 Mission Payload10
9 Experimental Verification10
9.1 Test Purpose10
9.2 Test content10

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document is proposed and coordinated by the National Aircraft Standardization Technical Committee (SAC/TC435).

This document was drafted by: Shenzhen Saiwei Intelligent Technology Co., Ltd., China Aviation Technology Research Institute, Shenzhen DJI Innovations Technology Ltd.

The main drafters of this document are: Huang Taoli, Tang Jian, Zhou Qiru, Shu Zhenjie, Wang Qiuyang, Hu Yingdong, Zhao Yu, Li Linlin, Chen Pingping, Wang Jiuyuan, Zhang Zejing.

General requirements for civil tethered unmanned aerial vehicle systems

1 Scope

This document specifies the general requirements for civil tethered UAV systems, tethered UAVs, data links, ground equipment, mission payloads and test validation. Certificate requirements.

This document applies to the design, manufacture and test verification of civil tethered UAV systems.

2 Normative references

GB/T 3956

GB/T 7424.1

GB/T 15972.10

GB/T 34989

GB/T 38909

GB/T 38924.2

GB/T 38924.3

GB/T 38924.5

GB/T 38924.6

GB/T 38924.8

GB/T 38924.9

GB/T 38924.10

GB/T 38924.11

GB/T 38930

GB/T 38997

3 Terms and definitions

The following terms and definitions apply to this document.

3.1

A device that automatically/manually controls the reeling, arranging and releasing of moored cables.

3.2

The high-voltage direct current output from the ground power supply is converted to provide long-term and stable power supply for airborne electrical equipment.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 16 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 3956 · GB/T 7424.1 · GB/T 15972.10 · GB/T 34989

Editions of GB/T 45678

Edition	Title	Revision	Status
GB/T 45678-2025	General requirements for civil tethered unmanned aircraft system	current edition	Current

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