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GB/T 7256.4-2023Lighting fixtures for civil airport—Part 4:Wind direction indicator (English PDF)

民用机场助航灯具 第4部分:风向标

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 28, 2023

Implementation date

July 1, 2024

Scope

GB/T 7256.4-2023 is the English-translated version of 民用机场助航灯具 第4部分:风向标.

GB/T 7256.4-2023 sets the requirements for the wind direction indicators installed at civil airports.

It specifies general and technical requirements and describes the matching test methods, and its contents list covers environmental requirements, wind resistance, creepage distances and clearances, the fabric windsock, the windsock frame, the support structure, windsock movement and deployment, photometric performance, obstacle lights, the coating, and marking and instructions.

Clause 4 sorts them by support mast material into type L-806 with a lightweight supporting structure and type L-808 with a frangible one, and by lighting into type I-A with external lighting, type I-B with internal lighting and type II with none.

It applies to wind direction indicators at civil airports, including the civil part of joint military and civil airports. Issued on 28 December 2023, it has applied since 1 July 2024.

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Document preview — GB/T 7256.4-2023

National Standard of the People's Republic of China

ICS
29.140.01
Classification
K 71

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

Contents

  • Preface
  • Introduction
  • 1 Scope
  • 2 Normative references
  • 3 Terms and Definitions
  • 4 Category
  • 5 Technical requirements
  • 5.1 Environmental requirements
  • 5.2 Wind resistance
  • 5.3 Creepage distances and clearances
  • 5.4 Fabric windsock requirements
  • 5.5 Wind bag frame
  • 5.6 Support structure
  • 5.7 Windsock Movement
  • 5.8 Windsock deployment
  • 5.9 Photometric
  • 5.10 Obstacle lights
  • 5.11 Spraying
  • 5.12 Labeling and instructions
  • 6 Test methods
  • 6.1 Environmental requirements
  • 6.2 Wind resistance
  • 6.3 Creepage distances and clearances
  • 6.4 Requirements for fabric windsocks
  • 6.5 Wind bag frame
  • 6.6 Support structure
  • 6.7 Windsock Movement
  • 6.8 Windsock deployment
  • 6.9 Luminosity
  • 6.10 Obstacle lights
  • 6.11 Spraying
  • 6.12 Labeling and instructions
  • Appendix A (informative) Wind vane example diagram

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

This document is Part 4 of GB/T 7256 "Civil Airport Navigation Aids Lamps". GB/T 7256 has released the following parts.

---Part 1. General requirements;

---Part 2. Sequential flashing lights and runway threshold identification lights;

---Part 3. Precision approach course indicator;

---Part 4. Wind Vane;

---Part 5. Aviation beacons.

Introduction

GB/T 7256 "Civil Airport Navigation Aids Lamps" is planned to consist of five parts.

---Part 1. General requirements. It mainly stipulates that tungsten lamps and LEDs are used as light sources in civil airports, and the power supply voltage does not exceed General requirements for 1000V navigation aid lamps. Suitable for providing light guidance signals for aircraft taxiing, takeoff or approach and landing.

Navigation lights. The main products covered are approach lights, runway threshold identification lights, runway threshold wing bar lights, runway threshold lights, and runway end lights.

Lights, touchdown zone lights, runway center line lights, runway edge lights, taxiway center line lights, taxiway edge lights, stop lights, runway warning lights, etc.

---Part 2. Sequential flashing lights and runway threshold identification lights. Mainly stipulates the requirements for use in civil airports to provide aircraft with clear Requirements for runway approach directional guidance sequence flashing lights and runway threshold identification lights.

---Part 3. Precision approach course indicator. It mainly stipulates the purpose of use in civil airports to provide pilots preparing to land with Requirements for precision approach path indicators depending on precision approach path indication. The main products covered are precision approach course indicators (PAPI) and Simplified Precision Approach Path Indicator (APAPI).

---Part 4. Wind vane. Mainly stipulates the requirements for wind vanes used in civil airports.

---Part 5. Aviation beacons. Mainly stipulates the equipment used in civil airports to indicate the location of the airport to aircraft (aircraft). requirements for aviation beacons. The main products covered include medium-intensity airport beacons, medium-intensity seaplane base beacons, high-intensity beacons Airport beacons, high-intensity seaplane base beacons, low-intensity airport beacons, low-intensity seaplane base beacons, etc. Civil airport navigation aids Part 4. Wind Vane

1 Scope

This document specifies the general requirements and technical requirements for wind vanes and describes the test methods for wind vanes.

This document applies to wind vanes used in civil airports (including the civilian part of military-civilian airports).

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document.

GB/T 2423.1 Environmental testing of electrical and electronic products Part 2: Test methods Test A. Low temperature

GB/T 2423.2 Environmental testing of electrical and electronic products Part 2: Test methods Test B. High temperature

GB/T 4208 Shell protection level (IP code)

GB/T 7000.1 Luminaires Part 1: General requirements and tests

GB/T 7256.1 Civil airport navigation aids Part 1: General requirements

GB/T 8427 Textile color fastness test Color fastness to artificial light. xenon arc

MH/T 6012 Aviation obstruction lights

3 Terms and definitions

The terms and definitions defined in GB/T 7256.1 and the following apply to this document.

3.1 A device used to determine wind direction

Note: Its location can be seen by the pilot of the aircraft in flight or in the active area, and is not affected by airflow caused by nearby objects.

4 Categories

4.1 According to the material of the support rod, it is divided into.

---L-806 type. using lightweight materials as the supporting structure (see Appendix A for typical components);

---Type L-808. Use fragile materials as support structure (see Appendix A for typical components).

4.2 According to the clear method, it is divided into.

---Type I-A. external lighting (see Appendix A for typical wind vane);

---Type I-B. Internal lighting (see Appendix A for typical wind vane);

---Type II. no lighting.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

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