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 there
2、from, 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 m
3、ay 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 U
4、SA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AS20708/76AAEROSPACESTANDARDAS20708/76 REV. A Issued 1999-07 Revised 2011-07Superseding AS207
5、08/76 Synchro, Torque Differential Transmitter, Type 37TDX6A FSC 5990 RATIONALE This Revision consists of a 5 (five) year review, which provides updates to current format and references. NOTICE This specification is approved for use by all Departments and Agencies of the Department of Defense. The r
6、equirements for acquiring the Synchros described herein shall consist of this specification and the latest issue of SAE AS20708. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AS20708/76A Page 2
7、 of 3TABLE 1 REQUIREMENTS REQUIREMENT VALUE UNIT TOLERANCE Frequency Primary Voltage Primary Current Primary Power Impedance: Zso Zrs Impedance Angle: Zso Zrs Transformation Ratio Phase Shift (Lead) Electrical Error Torque Gradient Friction Torque Radial Play End Play 60 78 2050.0 15.6 - - - - 1.154
8、 3.010.0 1.10 0.50 0.0008 0.0030 Hz volts milliampswattsohmsohmsdegrees degrees - degrees minutesounce-inches per degree ounce-inches inchesinches1% 1% maximum maximum min.-max. min.-max. min.-max. min.-max. 2% maximum maximum minimum maximum maximum 0.0020 Temperature Rise - degrees (C) maximum Var
9、iation of Voltage (+10%) and Freq. (-5%) - watts maximum TABLE 2 MILITARY PART NUMBER VARIANT CHARACTERISTICS Military Part No. 1/ A .010 B .010 GMaximum ShaftStyle Terminal EndU+ .0000 - .0002 M20708/76-01A .700 .730 4.285 Splined Terminal Board .2405 1/ Military Part number M20708/76-01A shall be
10、the NATO standard. 1/ The suffix letter following the numerical dash number corresponds to the latest modification letter in the type designation. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE
11、AS20708/76A Page 3 of 3TABLE 3 MILITARY PART NUMBER CROSS-REFERENCES SUPERSEDED MILITARY PART NUMBERS NEW MILITARY PART NUMBERS SAE AS20708/76A MIL-S-20708-76A MIL-S-20708/76M20708/76A-001 M20708/76-001 M20708/76-01A NOTE: All line items shown in Table 3 refer to equivalent and interchangeable synch
12、ros 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-,-,-
