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GB/T 44822-2024: Measurement method for soot emissions from aircraft engines
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GB/T 44822-2024: Measurement method for soot emissions from aircraft engines

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Measurement method for soot emissions from aircraft engines Measurement method for soot particle emissions from aircraft engines ICS 49.050 CCS V 30 National Standard of the People's Republic of China Released on October 26, 2024 Implementation on May 1, 2025 State Administration for Market Regulation The National Standardization Administration issued

Table of Contents

Preface Ⅲ 1 Scope... 1 2 Normative references... 1 3 Terms and Definitions 1 4 Abbreviations... 2 5 Measurement Objects... 3 5.1 Engine Type... 3 5.2 Engine Technical Status... 3 6 Measurement system layout... 3 7 Measurement conditions... 5 7.1 Atmospheric conditions 5 7.2 Measurement Site 5 7.3 Measurement Conditions 5 8 Reagents and Materials 5 8.1 Dilution Gas 5 8.2 Carbon dioxide standard gas... 6 8.3 Tetracontan 6 9 Instruments and Equipment... 6 9.1 Sample gas collection, high temperature transportation and sample gas processing 6 9.2 Measurement Section 7 10 Measurement Procedure... 9 10.1 Measurement Process 9 10.2 Inspection before measurement 9 10.3 Ambient Soot Particle Measurement... 10 10.4 Measurement Implementation 11 10.5 Post-measurement inspection 12 10.6 Data Recording 12 11 Measurement Data Processing... 13 11.1 Correction for thermophoresis losses 13 11.2 Calculating Emission Index 13 12 Quality Assurance and Control... 14 12.1 Surveyors 14 12.2 Instrument and Equipment Measurement... 14 12.3 Measurement Support Documents 14 12.4 Handling Measurement Abnormalities... 14 12.5 Data Management... 14 12.6 Security Assurance... 15 13 Measurement Report... 15 Appendix A (Normative) Measurement Report Format... 16 Preface 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 was proposed and coordinated by the National Technical Committee for Aircraft Standardization (SAC/TC 435). This document was drafted by. Beijing University of Aeronautics and Astronautics, China Aerospace Science and Technology Research Institute, Hangzhou Beijing University of Aeronautics and Astronautics International Innovation Center New Research Institute, China Aero-Engine Research Institute, China Civil Aviation Airworthiness Certification Center, China Aviation Industry Corporation Luoyang Electro-Optical Equipment Research Institute, AVIC Commercial Aircraft Engine Co., Ltd., Commercial Aircraft Corporation of China, Ltd., China Civil Aviation Science and Technology Research Institute Institute of Environmental Sciences, China Institute of Metrology, National Center for Nanoscience and Technology, China Jiliang University, Civil Aviation University of China, AVIC General Aviation South China Aircraft Industry Co., Ltd. The main drafters of this document are. Chen Longfei, Ren Haitao, Li Guangze, Chang Liuyong, Zhu Meiyin, Xu Zheng, Zhang Bin, Zhong Shenghui, Hu Xuehuan, Ma Xiaoyan, Zhang Chenglin, Song Jianyu, Liu Zhanping, Yu Hongjun, Kong Xiangxing, Fang Jie, Cui Ning, Yu Jinglei, Zhang Yue, Zheng Yinger, Yin Hang, Zhang Hefeng, Ni Hong, Wang Yanjun, Zhang Wenge, Liu Junjie, Zhou Suhong, Zhu Xiaoyang, Chang Huaiqiu, Yu Mingzhou, Kong Ming, Xu Peng, Chen Liang, Yang Xiaojun, Sun Lei, Liu Hangyu, Qu Zhi, and Liu Chunli. Measurement method for soot particle emissions from aircraft engines WARNING—Persons using this document should have practical experience in formal laboratory work. This document does not purportedly address all possible safety issues. Users are responsible for taking appropriate safety and health measures and ensuring that the conditions stipulated by relevant national laws and regulations are met.

1 Scope

This document describes the measurement method for aircraft engine soot particle emissions and specifies the measurement parameters for aircraft engine soot particle emissions. image, measurement system layout, measurement conditions, reagents and materials, instruments and equipment, measurement procedures, measurement data processing, quality assurance and control, and the content of the measurement report. This document applies to the measurement of soot particle emissions from aircraft engines (hereinafter referred to as "engines").

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the latest version (including all amendments) applies to this document. In this document. GB/T 34525 Safety regulations for the handling, loading and unloading, storage and use of gas cylinders 3 Terms and Definitions The following terms and definitions apply to this document. 3.1 Rated thrust The maximum thrust that can be used for takeoff under normal operating conditions without water injection, in the international standard atmosphere at sea level static conditions. 3.2 catalytic stripper A device for removing volatile substances by catalytic oxidation. 3.3 gas concentration The volume fraction of the relevant components contained in a gas mixture. 3.4 Volatile particles Particles that can condense after the exhaust gas is cooled to below 350°C. Note. Such as sulfuric acid granules. 3.5 soot particles The exhaust pipe outlet plane of an aircraft engine emits carbonaceous particles that are not volatilized when heated to 350°C. 3.6 particle mass concentration The mass of particles per unit sample volume. ...