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GB/T 42434-2023 English PDF

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US$899.00 · In stock
Delivery: <= 6 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 42434-2023: General specification for aerospace variable delivery, pressure compensated, hydraulic pumps
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 42434-2023	899	Add to Cart	6 days	General specification for aerospace variable delivery, pressure compensated, hydraulic pumps	Valid

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Basic data

Standard ID: GB/T 42434-2023 (GB/T42434-2023)
Description (Translated English): General specification for aerospace variable delivery, pressure compensated, hydraulic pumps
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: V38
Classification of International Standard: 49.080
Word Count Estimation: 44,489
Date of Issue: 2023-05-23
Date of Implementation: 2023-12-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 42434-2023: General specification for aerospace variable delivery, pressure compensated, hydraulic pumps

---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 49:080 CCSV38 National Standards of People's Republic of China General specification for aircraft constant pressure variable hydraulic pump hydraulic pumps (ISO 8278:2016, Aerospaceseries-Hydraulic, pressurecompensated, Released on 2023-05-23 2023-12-01 implementation State Administration for Market Regulation Released by the National Standardization Management Committee

Preface I 1 Scope 1 2 Normative references 1 3 Terms and Definitions 2 4 Requirements 5 4:1 General 5 4:2 Performance 6 4:3 Detailed Design Requirements 13 4:4 Intensity 14 4:5 Structure 15 4:6 Installation 17 4:7 Noise level 18 4:8 Durability18 4:9 Environmental adaptability 18 4:10 Reliability 18 4:11 Maintainability 19 4:12 Airworthiness 19 5 Verification method 19 5:1 Inspection classification 19 5:2 Test bench requirements 19 5:3 Acceptance inspection 20 5:4 Identification test 22 6 Packaging, transportation and storage 36 Appendix A (Informative) Structure Number Comparison List 37

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: This document is modified to adopt ISO 8278:2016 "General Requirements for Aerospace Series Constant Pressure Variable Hydraulic Pumps": Compared with ISO 8278:2016, this document has more structural adjustments: For the comparison list of structural number changes between the two documents, see Appendix A: The technical differences between this document and ISO 8278:2016 and their reasons are as follows: a) Added the scope of application of "military or civilian" (see Chapter 1); b) The requirements for the degree of contamination of hydraulic oil have been added (see 4:2:1 and Chapter 6); c) Deleted the "rated output pressure value should be specified in the special specification" in the rated output pressure requirements, refer to ISO 6771 for pressure Grade requirements" (see 4:2:2, see 5:2:1 of ISO 8287:2016); d) The specific index of "the maximum permissible pulsation amplitude of the output pressure should not exceed ±2:1MPa or specified in the special specification" has been added requirements (see 4:2:4); e) Added unloading requirements (see 4:2:11:6); f) Replaced ISO 3601-1 (see 4:3:2) with the normative referenced GB/T 3452:1; g) The description of the requirements for the use of non-standard seals and electric pump protection rings for commercial aircraft and military Type III systems has been deleted (see 4:3:2, see 6:3 of ISO 8287:2016); h) Deleted "should not use lead type locking wire seal" (see 4:3:6, see 6:7 of ISO 8278:2016); i) Replaced ISO 2093 with the normatively referenced GB/T 12599 (see 4:5:2:2); j) Change "low temperature" to "extreme operating temperature", so that the extreme operating temperature test includes not only low temperature but also high temperature (see 4:9 and 5:4:3:10:2); k) Replaced ISO 2669 (see 4:9) with normative reference HB6167:16; l) The control accuracy of the inlet temperature of the test bench is required to supplement the temperature tolerance when it exceeds 107°C (see 5:2); m) Added pressure pulsation test conditions for rotational speed change (see 5:4:3:6); n) Added checking the filter every (50±10)h to monitor product oil contamination (see 5:4:3:8:4:2); o) A description of the test sample requirements for additional durability tests has been added (see 5:4:3:8:13); p) The temperature corresponding to the requirements of 4:9 "environmental adaptability" - altitude, humidity, fluid sensitivity, mold, salt spray, sand dust, knot Ice, working shock, steady-state acceleration and other verification methods (see 5:4:3:10 and 5:4:3:12); q) The chapter "Packaging, Transportation and Storage" has been added, and the five-year storage period requirements have been clarified (see Chapter 6): The following editorial changes have been made to this document: a) In order to coordinate with existing standards, change the name of the standard to "General Specifications for Aircraft Constant Pressure Variable Hydraulic Pumps"; b) Delete the term and definition "rated durability" that is not used in the text, and delete the terms and definitions used only once in the text Means "maximum case oil return pressure", "maximum instantaneous case oil return pressure" and "first article inspection" to meet the requirements of GB/T 1:1-2020; c) Deleted Note 2 in "Purchaser" in terms and definitions, and the buyer and supplier negotiate to determine the writer of the special specification; d) Delete the conversion content using the psi pressure unit in the original text, and convert kPa to MPa; e) Deleted the "relationship between the maximum recommended value of rated speed and hydraulic pump displacement" expressed in American units in the original text, and only retained its Graph expressed in metric units: Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents: This document is proposed and managed by the National Aircraft Standardization Technical Committee (SAC/TC435): This document is drafted by: Aviation Industry Corporation of China Jincheng Nanjing Electromechanical Hydraulic Engineering Research Center, Beijing University of Aeronautics and Astronautics, China National Aeronautical Technology Research Institute: The main drafters of this document: Chen Jinhua, Lu Yueliang, Sha Linfeng, Ke Bing, Wang Yan, Guo Shengrong, Jiang Pei, Yin Chao, Ma Jichao, Wang Zhenzhen, Ye Weiwei, Xu Pengguo, Ren Haitao: General specification for aircraft constant pressure variable hydraulic pump

1 Scope

This document specifies the basic requirements, verification methods, packaging, transportation and storage: This document applies to constant pressure variable hydraulic pumps in military or civil aircraft hydraulic systems with a rated working pressure of 35MPa and below:

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document: GB/T 3452:1 O-shaped rubber seal rings for hydraulic and pneumatic use Part 1: Dimension series and tolerances (GB/T 3452:1- 2005, ISO 3601-1:2002, MOD) GB/T 12599 Technical specifications and test methods for tin plating on metal coatings (GB/T 12599-2002, ISO 2093: 1986, MOD) GB/T 30206:1 Vocabulary for aerospace fluid systems Part 1: General terms and definitions related to pressure (GB/T 30206: 1-2013, ISO 8625-1:1993, IDT) GB/T 30206:2 Aerospace fluid system vocabulary Part 2: General terms and definitions related to flow (GB/T 30206: 2-2013, ISO 8625-2:1991, IDT) GB/T 30206:3 Vocabulary for aerospace fluid systems Part 3: General terms and definitions related to temperature (GB/T 30206: 3-2013, ISO 8625-3:1991, IDT) GB/T 30213 Aircraft hydraulic accessories identify signs of hydraulic oil applicable to accessories (GB/T 30213-2013, ISO 3323: 1987, IDT) HB6167:15 Environmental conditions and test methods for airborne equipment of civil aircraft Part 15: Sound and vibration test (HB6167:15- 2014, ISO 2671:1982, IDT) HB6167:16 Environmental conditions and test methods for airborne equipment of civil aircraft Part 16: Acceleration test (HB6167:16- 2014, ISO 2669:1995(E), MOD) ISO 7320 Dimensions of threaded and sealed joints for aerospace fluid systems (Aerospace-Couplings, threadedand sealed, for fluid systems - Dimensions) ISO 8078 Sulfuric acid procedure for anodizing unpigmented coatings of aluminum alloys for aerospace applications (Aerospace ISO 8079 Sulfuric acid process for anodizing aluminum alloys with colored coatings for aerospace applications (Aerospace ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 42434-2023_English be delivered?

Answer: Upon your order, we will start to translate GB/T 42434-2023_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 6 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 42434-2023_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 42434-2023_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.