1、_SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising theref
2、rom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2011 SAE International All rights reserved. No part of this publication ma
3、y be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (outside US
4、A) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AS20708/34AAEROSPACESTANDARDAS20708/34 REV. A Issued 1999-07 Revised 2011-02Superseding AS20708
5、/34 Synchro, Control Transformer, Type 18CT6D FSC 5990 RATIONALEThis Revision consists of a 5 (five) year review, which provides updates to current format and references NOTICEThis specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for ac
6、quiring the Synchros described herein shall consist of this specification and the latest issue of SAE AS20708. A change bar (|) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of th
7、is document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. Copyright SAE International Provided by IHS unde
8、r license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AS20708/34A Page 2 of 2TABLE 1 REQUIREMENTS Requirement Value Unit Tolerance Frequency 60 Hz 1% Primary Voltage 78 volts 1% Primary Current 17.0 milliamps maximum Primary Power 0.43 watts maximum
9、 Impedance:Zso Zrs 4600-58001600-2050ohmsohmsmin.-max.min.-max.Impedance Angle: Zso Zrs 70.0-76.014.5-18.0degreesdegreesmin.-max.min.-max.Transformation Ratio 0.735 - 2%Phase Shift (Lead) 16.0 degrees 3.0 Electrical Error 6.0 minutes maximum Null Voltage: Total Fundamental45.025.0millivoltsmillivolt
10、smaximummaximumFriction Torque 0.10 ounce-inches maximum Radial Play 0.0006 inches maximum End Play 0.0015 inches 0.0010 Temperature Rise 10.0 degrees (C) maximum TABLE 2 MILITARY PART NUMBER VARIANT CHARACTERISTICS Military Part No. 1/A.010B.010GMaximumShaftStyleTerminal End U+.0000- .0002 M20708/3
11、4-01D .555 .500 2.388 Splined Terminal Board .1872 1/ Military Part number M20708/34-01D shall be NATO standard. 1/ The suffix letter following the numerical dash number corresponds to the latest modification letter in the type designation. TABLE 3 MILITARY PART NUMBER CROSS-REFERENCES Superseded Mi
12、litary Part Numbers New Military Part Numbers SAE AS20708/34A MIL-S-20708/34C MIL-S-20708/34B M20708/34C-001 M20708/34-001 M20708/34-01D NOTE: All line items shown in Table 3 refer to equivalent and interchangeable synchros of the same type designation modification. Part number changes do not affect form, fit, or function of the synchros listed therein. PREPARED BY SAE COMMITTEE AE-7A - GENERATORS/CONTROLS/MAGNETIC DEVICES Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
