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Vibration test method for reciprocating aircraft engines
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Basic data
| Standard ID | GB/T 45734-2025 (GB/T45734-2025) |
| Description (Translated English) | Vibration test method for reciprocating aircraft engines |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | V30 |
| Classification of International Standard | 49.050 |
| Word Count Estimation | 14,134 |
| Date of Issue | 2025-05-30 |
| Date of Implementation | 2025-12-01 |
| Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
Similar standards
GB/T 36258|GB/T 45623|GB/T 45734-2025: Vibration test method for reciprocating aircraft engines
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 49.050
CCSV30
National Standard of the People's Republic of China
Vibration test method for aviation piston engines
Released on 2025-05-30
2025-12-01 Implementation
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 Experimental Purpose 1
5 Test Principle 1
6 Preparation before the test 2
6.1 Test Outline 2
6.2 Test speed setting 2
6.3 Test piece 2
6.4 Dwell time 2
6.5 Test equipment 3
7 Experimental Implementation 3
7.1 Vibration sweep test 3
7.2 Vibration dwell test 5
8 Test criteria 6
9 Test Report 6
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. Wuhu Diamond Aero Engine Co., Ltd., China Civil Aviation Airworthiness Certification Center, China Aero Engine South Industry
Co., Ltd. and China Electronics Technology Group Corporation Wuhu General Aviation Industry Technology Research Institute Co., Ltd.
The main drafters of this document are. Feng Jianwen, Zhen Bo, Bian Shaochun, Zhou Zhijian, Liu Xiaojie, Yu Jinli, Hong Nan, Hu Chongbo, He Xin, Zeng Rui,
Hou Xiaoyu.
Vibration test method for aviation piston engines
1 Scope
This document describes the purpose and principle of the vibration test of aviation piston engines, and specifies the preparation, implementation, and
Contents of test criteria and test report.
This document applies to vibration testing of aviation piston engines.
2 Normative references
The contents of the following documents constitute essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 29716.1 Mechanical vibration and shock signal processing Part 1.Introduction
GB/T 29716.2 Mechanical vibration and shock signal processing Part 2.Time domain window for Fourier transform analysis
GB/T 29716.3 Mechanical vibration and shock signal processing Part 3.Time-frequency analysis method
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
frequency sweep test
A test procedure for measuring the vibration characteristics of components during continuous changes in engine speed.
3.2
resident dweltest
The engine components are subjected to fatigue cycle accumulation test at a fixed engine speed under the condition of maximum vibration response.
process.
4.Purpose of the experiment
The purposes of vibration testing include.
a) not generate vibrations that could cause component failure or transmit excessive vibrations to the aircraft structure;
b) Vibration stress of main components (shaft components, components for conveying flammable liquids, and other components that are sensitive to vibration)
The fatigue limit of the material shall not be exceeded under normal ignition conditions of all cylinders;
c) Determine the vibration response of the whole machine under the condition of single cylinder misfiring (cylinder missing) and determine the safe operating conditions under this condition.
5 Test Principle
The vibration sweep frequency test was carried out on the main parts of the aircraft piston engine to determine the vibration of these parts within the engine operating speed range.
The maximum vibration response of the main components and the engine operating conditions are determined by analysis, and the stationary
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