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1、 Reference number ISO 22089:2009(E) ISO 2009 INTERNATIONAL STANDARD ISO 22089 First edition 2009-02-15 Aerospace Hydraulic power transfer units General specifications Aronautique Units de transfert de puissance hydraulique Spcifications gnrales Copyright International Organization for Standardizatio
2、n Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 04/07/2009 04:30:59 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 22089:2009(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing
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5、en to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2009 All rights reserved. Unless otherwise specified, no part of this
6、publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211
7、Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2009 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 04
8、/07/2009 04:30:59 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 22089:2009(E) ISO 2009 All rights reserved iii Contents Page Foreword. v Introduction. vi 1 Scope . 1 2 Normative references. 1 3 Terms and definitions. 2 4 Classification. 8 5 General requirements. 9 5.1
9、 General. 9 5.2 Hydraulic system characteristics 9 5.3 Airworthiness requirements 10 5.4 Qualification 10 6 Functional requirements 10 6.1 Hydraulic fluid. 10 6.2 PTU pump/motor displacement. 10 6.3 PTU pressure. 11 6.4 PTU pump pressure 12 6.5 Motor pressure 14 6.6 Case drain pressures . 14 6.7 Flo
10、ws 14 6.8 Leakage 15 6.9 Speed and direction of rotation. 16 6.10 Efficiency. 18 6.11 Control . 18 6.12 Rated temperature 21 6.13 Acoustic noise level . 21 6.14 Endurance . 21 6.15 Environmental requirements. 22 7 Detail design requirements 22 7.1 Dimensionally critical components 22 7.2 Maintainabi
11、lity features 22 7.3 Seals. 23 7.4 Lubrication 23 7.5 Balance 23 7.6 System separation/rip-stop . 23 7.7 Drive shaft . 23 7.8 Self-contained failure . 23 7.9 Safety wire sealing 23 7.10 Electro-conductive bonding 23 7.11 Marking 24 8 Strength requirements . 24 8.1 Pressure loads 24 8.2 Proof pressur
12、es 24 8.3 Burst pressure 25 8.4 Pressure impulse (fatigue). 26 8.5 Pressure and structural load. 26 8.6 Port strength . 26 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 04/07/2009 04:30:59 MDTNo repro
13、duction or networking permitted without license from IHS -,-,- ISO 22089:2009(E) iv ISO 2009 All rights reserved 9 Construction26 9.1 Materials.26 9.2 Corrosion protection 27 9.3 Castings.28 10 Installation requirements .28 10.1 Dimensions28 10.2 Mass .28 10.3 Mounting28 10.4 Ports .28 11 Maintenanc
14、e.28 11.1 Maintenance concept28 11.2 Service life limitations and storage specifications28 12 Reliability .29 12.1 Equipment compliance.29 12.2 Requirements 29 13 Quality assurance provisions29 13.1 Responsibility for inspection.29 13.2 Classification of tests.29 13.3 Test stand requirements 29 14 A
15、cceptance tests.30 14.1 General.30 14.2 Examination of the product30 14.3 Test programme and inspection methods .30 15 Qualification tests.35 15.1 Purpose35 15.2 Qualification procedure35 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=HP Moni
16、toring/1111111164 Not for Resale, 04/07/2009 04:30:59 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 22089:2009(E) ISO 2009 All rights reserved v Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (I
17、SO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, gov
18、ernmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC
19、 Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the membe
20、r bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 22089 was prepared by Technical Committee ISO/TC 20, Aircraft and space
21、vehicles, Subcommittee SC 10, Aerospace fluid systems and components. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 04/07/2009 04:30:59 MDTNo reproduction or networking permitted without license from
22、IHS -,-,- ISO 22089:2009(E) vi ISO 2009 All rights reserved Introduction Hydraulic power transfer units (PTUs) are designed to transfer hydraulic power, but not hydraulic fluid, between two independent hydraulic systems, or between hydraulic sub-systems. This International Standard establishes the g
23、eneral requirements for PTUs, including: design requirements; test requirements. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 04/07/2009 04:30:59 MDTNo reproduction or networking permitted without li
24、cense from IHS -,-,- INTERNATIONAL STANDARD ISO 22089:2009(E) ISO 2009 All rights reserved 1 Aerospace Hydraulic power transfer units General specifications 1 Scope This International Standard establishes the general requirements for hydraulic Power Transfer Units (PTUs). This International Standard
25、 covers uni-directional and bi-directional PTUs. This International Standard is used in conjunction with the detail specification particular to each application. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, on
26、ly the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 2093, Electroplated coatings of tin Specification and test methods ISO 2669, Environmental tests for aircraft equipment Steady-state acceleration ISO 2671, Envi
27、ronmental tests for aircraft equipment Part 3.4: Acoustic vibration ISO 3323, Aircraft Hydraulic components Marking to indicate fluid for which component is approved ISO 3601-1, Fluid power systems O-rings Part 1: Inside diameters, cross-sections, tolerances and designation codes ISO 7137, Aircraft
28、Environmental conditions and test procedures for airborne equipment ISO 7320, Aerospace Couplings, threaded and sealed, for fluid systems Dimensions ISO 8078, Aerospace process Anodic treatment of aluminium alloys Sulfuric acid process, undyed coating ISO 8079, Aerospace process Anodic treatment of
29、aluminium alloys Sulfuric acid process, dyed coating ISO 8081, Aerospace process Chemical conversion coating for aluminium alloys General purpose ISO 8625-1, Aerospace Fluid systems Vocabulary Part 1: General terms and definitions related to pressure ISO 8625-2, Aerospace Fluid systems Vocabulary Pa
30、rt 2: General terms and definitions relating to flow ISO 8625-3, Aerospace Fluid systems Vocabulary Part 3: General terms and definitions relating to temperature ISO 11218, Aerospace Cleanliness classification for aeronautical fluids Copyright International Organization for Standardization Provided
31、by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 04/07/2009 04:30:59 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 22089:2009(E) 2 ISO 2009 All rights reserved 3 Terms and definitions For the purposes of this document the terms and defin
32、itions given in ISO 8625-1, ISO 8625-2 and ISO 8625-3 and the following apply. 3.1 Power Transfer Unit (PTU) hydraulic device that is able to transfer hydraulic power between two independent hydraulic systems (or sub- systems) without transferring hydraulic fluid NOTE The PTU generally consists of t
33、wo rotating groups, housed separately and connected by a driveshaft. Hydraulic energy supplied to the hydraulic motor from one system drives the pump, providing hydraulic power to the other system. 3.2 uni-directional PTU hydraulic pump that transfers hydraulic power between two independent hydrauli
34、c systems (or sub-systems), in one direction only, such that the pump and motor cannot reverse their functions 3.3 bi-directional PTU hydraulic pump that transfers hydraulic power between two independent hydraulic systems (or sub-systems) in either direction NOTE The PTU acts to provide hydraulic po
35、wer to the system that is experiencing the greater power demand using hydraulic power from the other (lower demand) system. The pump and motor can reverse their functions such that the pump can function as a motor and vice-versa, depending on the direction of operation. 3.4 purchaser organization th
36、at has the engineering responsibility for the hydraulic system that includes the PTU and who approves the supplier for the design, development and manufacture of aerospace PTUs NOTE Typically, the purchaser is an aircraft manufacturer, an equipment manufacturer that has hydraulic system responsibili
37、ty or a modification centre. The purchaser is responsible for the compilation of the detail specification. 3.5 detail specification document that specifies the following: a) technical requirements; b) acceptance and qualification test requirements; c) reliability requirements; d) quality requirement
38、s; e) packaging requirements; f) other requirements. 3.6 supplier manufacturer of the PTU, responsible for the design, production and qualification of the PTU 3.7 ports of the uni-directional PTU 3.7.1 pump case drain port (if included) port that drains internal leakage flow to the reservoir Copyrig
39、ht International Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 04/07/2009 04:30:59 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 22089:2009(E) ISO 2009 All rights reserved 3 3.7.2 pump inlet p
40、ort port that receives flow from the hydraulic reservoir to supply the pump 3.7.3 pump discharge port port that supplies pressurized flow to the system 3.7.4 motor case drain port (if included) port that drains motor internal leakage flow to the reservoir 3.7.5 motor supply port port that receives f
41、low from the hydraulic system to power the motor 3.7.6 motor return port port that returns flow to the reservoir 3.7.7 shaft seal port port that routes any shaft seal leakage from the PTU to an overboard drain, collector tank, etc. 3.8 ports of the bi-directional PTU 3.8.1 case drain port (if includ
42、ed) port that drains internal leakage flow to the reservoir 3.8.2 HP port port that receives flow from the hydraulic system to power the motor, or supplies pressurized flow to the system NOTE When the PTU half is acting as a pump, the HP port supplies pressurized flow to the system. When the PTU hal
43、f is acting as a motor, the HP port receives flow from the hydraulic system. 3.8.3 LP port port that returns flow to the reservoir or flow from the hydraulic reservoir to supply the pump NOTE When the PTU half is acting as a pump, the LP port receives flow from the hydraulic reservoir. When the PTU
44、half is acting as a motor, the LP port returns flow to the reservoir. 3.8.4 shaft seal port port that routes any shaft seal leakage from the PTU to an overboard drain, collector tank, etc. 3.9 design operating pressure normal maximum steady pressure NOTE Excluded are reasonable tolerances, transient
45、 pressure effects such as may arise from: pressure ripple; reactions to system functioning; demands that may affect fatigue. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 04/07/2009 04:30:59 MDTNo rep
46、roduction or networking permitted without license from IHS -,-,- ISO 22089:2009(E) 4 ISO 2009 All rights reserved 3.10 break-out pressure minimum difference between the pump and motor differential pressures at which the PTU motor will start operating under conditions specified in the detail specific
47、ation NOTE Typically, the PTU will not act to provide power until a threshold breakout differential pressure between systems (or sub-systems) has been exceeded. 3.11 rated case-drain pressure nominal pressure at which the PTU pump and motor cases are required to operate continuously in the system 3.
48、12 maximum transient case pressure maximum pressure peak that can be imposed by the hydraulic system on the pump or motor case drain port 3.13 maximum transient discharge pressure pressure recorded during a discrete transient event normally found whilst cycling from full-flow pressure to rated pressure (zero flow) 3.14 maximum pump case drain pressure maximum continuous pressure developed b