SANS 13342-2008 Small craft - Static thrust measurement for outboard motors《小艇 舷外机的静推力测定》.pdf

1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA

2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any

3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-21983-3 SANS 13342:2008 Edition 1 ISO 13342:1995 Edition 1SOUTH AFRICAN NATIONAL STANDARD Small craft Static thrust measurement for outboa

4、rd motors This national standard is the identical implementation of ISO 13342:1995, and is adopted with the permission of the International Organization for Standardization. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001 Tel: +27 12 428 7911 Fax: +27

5、 12 344 1568 www.sabs.co.za SABS This standard may only be used and printed by approved subscription and freemailing clients of the SABS.SANS 13342:2008 Edition 1 ISO 13342:1995 Edition 1 Table of changes Change No. Date Scope National foreword This South African standard was approved by National Co

6、mmittee SABS TC 188, Small craft, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in September 2008. This standard may only be used and printed by approved subscription and freemailing clients of the

7、SABS.INTERNATIONAL STANDARD First edition 1995-10-15 Small traft - Static thrust measurement for outboard motors Navires de plakance - Mesurage de Ia poussee statique des moteurs hors-bord Reference number ISO 13342:1995( E) SANS 13342:2008This standard may only be used and printed by approved subsc

8、ription and freemailing clients of the SABS.ISO 13342:1995(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national Standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical comm

9、ittees. Esch 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, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the

10、International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. 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 mem

11、ber bodies casting a vote. International Standard ISO 13342 was prepared by Technical Committee ISO/TC 188, Small traft. 0 ISO 1995 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronie or mechanical, includ

12、ing photocopying and microfilm, without Permission in writing from the publisher. International Organization for Standardization Case Postale 56 l CH-1 211 Geneve 20 l Switzerland Printed in Switzerland SANS 13342:2008This standard may only be used and printed by approved subscription and freemailin

13、g clients of the SABS.INTERNATIONAL STANDARD ISO ISO 13342:1995(E) Small traft - Static thrust measurement for outboard motors 1 Scope This International Standard specifies the method for measuring and declaring the forward and reverse thrust of outboard motors in a stationary Situation to determine

14、 if start-in-gear protection, as specified in ISO 11547, is required. 2 Normative reference The following Standard contains provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the edition indicated was valid. All Standar

15、ds are subject to revision, and Parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent edition of the Standard indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 1154

16、7:1994, Small traft - Start-in-gear protec- tion. 3 Definitions For the purposes of this International Standard, the following definitions apply. 3.1 thrust: Horizontal forte, in newtons, which the outboard motor is capable of producing. 3.2 declared value of maximum thrust: Average of the thrust me

17、asurement that tan be maintained for not less than 10 s within & 10 % of fluctuation at a particular throttle setting. 4 Outboard motor 4.1 When testing production outboard motors for for- mal declaration, the test unit shall be representative of the manufacturers production units. 4.2 The test outb

18、oard motor shall be run-in, operated and adjusted in accordance with the manufacturers specifications. 4.3 The test outboard motor may be modified only if it is done in accordance with written instructions included in a modification kit provided by the manufac- turer and listed in a catalogue or bro

19、thure by the manufacturer. Any throttle limitation built into the Standard engine for forward or reverse shall remain in place unless specifically stated otherwise in the kit instructions. 5 Test conditions and procedure 5.1 The test shall be performed in still water between sea level and 250 m maxi

20、mum altitude. 5.2 The minimum water depth below the Propeller shaft centreline shall be 4 times the Propeller diam- eter. 5.3 The test outboard motor thrust forte shall be measured by a gauge or transducer that has been calibrated to an accuracy within I!I 2 % of the maxi- mum thrust being observed.

21、 5.4 No obstruction shall project below the water surface in front of or behind the Propeller so as to Cause Ventilation or induce cavitation. There shall be a clear flow area for 3 m in front of and behind the Propeller for a distance of 0,7 m on either side. SANS 13342:2008This standard may only b

22、e used and printed by approved subscription and freemailing clients of the SABS.ISO 13342:1995(E) ISO 5.5 The vertical Position of the test outboard motor shall be adjusted so that the Propeller is sufficiently below the water surface to prevent Ventilation, or at the depth specified by the manufact

23、urer if this is deeper. 5.6 During thrust measurement, the Propeller shaft shall be parallel to the water surface within If-: 5”. In addition, the angle of pull from the measuring device to the fixed Point shall be parallel to the water surface within -1: 5”. 6 Presentation of data 6.1 Any declarati

24、on of thrust shall include both forward and reverse thrust with the engine Speed obtained and shall be limited to the Standard range of propellers sold by the outboard manufacturer through its normal channels of distribution. 6.2 The declaration shall include Propeller diameter, pitch and part numbe

25、r, as well as the identification of any kit used to modify the outboard motor or propeller In any manner. 6.3 No correction factor shall be applied to the observed value of thrust. Reverse thrust is irregular due to exhaust Ventilation of the Propeller. Average reverse thrust values shall therefore be used. SANS 13342:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.