GB/T 41886-2022Requirements for cabin acoustic design of transport aircraft (English PDF)
运输类飞机舱内声学设计要求
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 12, 2022
Implementation date
October 12, 2022
Scope
GB/T 41886-2022 is the English-translated version of 运输类飞机舱内声学设计要求.
GB/T 41886-2022 sets the general technical requirements for designing and verifying cabin acoustics while a transport aircraft is being developed.
It works through the design basis, criteria, content and programme, then through the detailed requirements: predicting cabin noise and allocating the noise index to each sub-system, sound insulation of the wall panel structure and sound absorption of the interior, engine silencing nacelles and vibration-reduction mounting of the power system, and the acoustic design of environmental control system fans, refrigeration components, ventilation devices, piping and mufflers and of the airborne hydraulic system.
Verification covers panel insulation and interior absorption tests, power system noise and isolation tests, equipment noise measurement and cabin noise measurement.
Its main technical content matches Russian standard GOST R 70066-2022. Issued on 12 October 2022, it has applied since that date.
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Document preview — GB/T 41886-2022
National Standard of the People's Republic of China
- ICS
- 49.025.01
- Classification
- V 25
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Preface
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms, Definitions and Abbreviations
- 3.1 Terms and Definitions
- 3.2 Abbreviations
- 4 General Requirements
- 4.1 Design basis
- 4.2 Design Criterion
- 4.3 Design Content
- 4.4 Design Program
- 4.4.1 Overview
- 4.4.2 The establishment of noise indicators in cabins
- 4.4.3 Prediction of cabin noise
- 4.4.4 Sound insulation and sound absorption design
- 4.4.5 Airborne system/equipment noise control
- 4.4.6 Vibration and noise reduction design of power system
- 5 Detailed requirements
- 5.1 Prediction of cabin noise and allocation of indicators for each sub-system
- 5.2 Siding structure and interior acoustic design
- 5.2.1 Design requirements for sound insulation of wall panel structures
- 5.2.2 Sound absorption design requirements for interior systems
- 5.3 Acoustic Design and Installation of Powertrain
- 5.3.1 Design requirements for engine silencing nacelles
- 5.3.2 Design requirements for vibration reduction installation of power system
- 5.4 Acoustic Design of Airborne Systems
- 5.4.1 Environmental control system fan acoustic design requirements
- 5.4.1.1 Evaluation of radiated noise of fans of environmental control system
- 5.4.1.2 Fan installation requirements for environmental control system
- 5.4.2 Acoustic Design Requirements for Refrigeration Components of Environmental Control System
- 5.4.2.1 Evaluation of radiated noise of refrigeration components
- 5.4.2.2 Refrigeration module installation requirements
- 5.4.3 Acoustic Design Requirements for Environmental Control System Ventilation Device
- 5.4.4 Environmental control system piping acoustic design requirements
- 5.4.5 Muffler design requirements for environmental control system
- 5.4.6 Acoustic Design Requirements for Airborne Hydraulic System
- 5.4.7 Acoustic design requirements for other airborne equipment
- 6 Verification Requirements
- 6.1 Sound insulation and interior sound absorption test of wall panel structure
- 6.1.1 Sound insulation performance test of wall panel structure
- 6.1.2 Sound absorption test of interior materials
- 6.2 Power System Noise and Vibration Isolation Test
- 6.2.1 Acoustic performance test of dynamic system
- 6.2.2 Vibration and isolation performance test of power system installation
- 6.3 Airborne system/equipment noise measurements
- 6.3.1 Acoustic test of environmental control system
- 6.3.2 Acoustic characteristic test of other airborne systems/equipment
- 6.4 Cabin noise measurement
- Appendix A (Informative) Acoustic Design Relevant Calculation Formula
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 of Standardization Documents" drafted.
Introduction
This document is jointly prepared by experts in the aviation field of China and Russia under the working mechanism of the Sino-Russian Civil Aircraft Standards Task Force. This document is related to Russia The main technical content of the national standard GOSTR70066-2022 remains the same. Acoustic design requirements for transport aircraft cabins
1 Scope
This document specifies general technical requirements for the design and verification of cabin acoustics during the development of transport aircraft.
This document applies to the design and verification of cabin acoustics in transport aircraft. For other aircraft types to carry out cabin acoustic design and verification, you can also refer to this document. The relevant content of the file is executed.
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.
GB/T 3767 Acoustic sound pressure method - Engineering method for determining sound power level of noise source and sound energy level of approximate free field above reflecting surface
GB/T 3947 Acoustic terminology
GB/T 6881.1 Acoustic sound pressure method Determination of noise source sound power level Reverberation chamber precision method
GB/T 6882 Acoustic sound pressure method Determination of sound power level and sound energy level of noise source anechoic room and semi-anechoic room precision method
GB/T 16405 Simple laboratory method for measuring insertion loss of acoustic duct muffler without airflow
GB/T 16538 Acoustic Sound Pressure Method for Determination of Noise Source Sound Power Level Field Comparison Method
GB/T 18696.1 Measurement of sound absorption coefficient and acoustic impedance in acoustic impedance tubes - Part 1: Standing wave ratio method
GB/T 18696.2 Measurement of sound absorption coefficient and acoustic impedance in acoustic impedance tubes - Part 2: Transfer function method
GB/T 20247 Acoustic reverberation room sound absorption measurement
GB/T 20248 Measurement of sound pressure level in aircraft cabin during acoustic flight
GB/T 25516 Laboratory Measurement Methods for Acoustic Duct Mufflers and Duct End Units Insertion Loss, Airflow Noise and Total Pressure loss
HB7126 Measurement of Sound Absorption Coefficient of Aeronautical Materials and Components by Reverberation Chamber Method
HB8525 Civil Aircraft Development Program CCAR-25-R4 Airworthiness Standard for Transport Aircraft (March 11, 2016 Ministry of Transport)
CCAR-33-R2 Aviation Engine Airworthiness Regulations (March 17, 2016 Ministry of Transport)
3 Terms, Definitions and Abbreviations
3.1 Terms and Definitions
The terms and definitions defined in GB/T 3947 and the following apply to this document.
3.1.1 Decibel
A unit to describe sound pressure level.
Note: Decibel is expressed in dB.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 3767Acoustics -- Determination of sound power levels and sound energy levels of noise sources using sound pressure -- Engineering methods for an essentially free field over a reflecting plane
- GB/T 3947Acoustical terminology
- GB/T 6881.1Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Precision methods for reverberation test rooms
- GB/T 6882Acoustics -- Determination of sound power levels and sound energy levels of noise sources using sound pressure -- Precision methods for anechoic rooms and hemi-anechoic rooms
- GB/T 16405Acoustics - Measurement of insertion loss of ducted silencers without flow - Laboratory survey method
- GB/T 16538Acoustics -- Determination of sound power levels of noise sources using sound pressure -- Comparison method in situ
Similar standards
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Related Standards
GB/T 16405-2025 — Acoustics - Measurement of insertion loss of ducted silencers without flow - Laboratory survey method
GB/T 16538-2008 — Acoustics -- Determination of sound power levels of noise sources using sound pressure -- Comparison method in situ
GB/T 18696.1-2004 — Acoustics -- Determination of sound absorption coefficient and impedance in impedance tubes -- Part 1: Method using standing wave ratio
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