1、MIL-STD-710D 25 March 1991 SUPERSEDING 5) November 1970 MIL-STD-7 1OC MILITARY STANDARD SYNCHROS, 60 AND 400 Hz, SELIOCTION AND APPLICATION OF NOT MEASUREMENT SENSITIVE AMSC - N/A FSC 5990 PIB BUT ION STATWNT 8. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo
2、reproduction or networking permitted without license from IHS-,-,-MIL-STD-71OD 59 m 9999911 MIL-STD-71OD FOREWORD 1. of the Department of Defense. This military standard is approved for use by all Department8 and Agencies 2. Beneficial comments (recommendations, additions, deletions) and any pertine
3、nt data which may be of use in improving this document should be addressed to: Commandiag Officer, Naval Air Engineering Center, Systems Engineering and Standardization Department, Code 53, Lakehurst, NJ 08733-5100, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1
4、426) appearing at the end of this document or by letter. ii Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. MIL-STD-71OD CONTENTS Paraqraph Paqe 1 . SCOPE 1 1.1 Purpose . 1 1.2 scope 1 2 . APPLICABLE DOCUMENTS 1 2.1 Government documents 1 2.1.1 Spe
5、cifications and standards. 1 2 -2 Order of precedence . 2 3 . DEFINITIONS . + . 2 3.1 Synchro terminology- . 2 3.2 Nonstandard synchros 2 4 . GENERAL REQUIREMENTS 3 4.1 4.2 4.3 4.4 4.4.1 4.4.2 4.4.3 4.4.4 4.4.5 4.4.5.1 4.5 4.6 4.6.1 Choice of synchro types . Criteria for inclusion in the listing of
6、standard synchros . Standard synchros (functional listing) . Application and use . Electrical and physical tolerances Selection and alterations Tests and inspections for equipment design Tests and inspections for specification modifications Application . Unspecified characteristics . Use of nonstand
7、ard synchros . Test data New development . 3 3 6 7 7 7 8 8 8 8 8 8 8 5 . DETAIL REQUIREMENTS (Not applicable) 6 . NOTES 9 9 6.1 Intendeduse 9 6.2 IssueofDODISS 9 6.3 consideration of data requirements . 9 6.4 Subject term (key word) listing . 10 6.5 International standardization agreements 10 6.6 Ch
8、anges from previous issue . 10 iii Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-710D CONTENTS - Continued TABLES paue Tables I. Listing of standard synchros (as per 4.2) . . . . . . 4 II. Functional list of standard torque synchros . . . .
9、 . 6 III. Functional list of standard control synchros . . . . 7 APPENDIX A SYNCHRO INTERCHANGEABILITY GUIDE 11 Paragraph 10. 10.1 10.2 10.3 Table IV. V. APPENDIX B Paragraph 10. 10.1 Table VI. GENERAL. . 11 Purpose. 11 Military type synchros . . . . . . . . . . . . . . . 11 Standard synchros . . .
10、. . . . . . . . . . . . . . . 11 Synchro supersession data . . . . . . . . . . . . . . 12 Synchro obsolescence data . . . . . . . . . . . . . . 30 SYNCHRO GUIDANCE LIST OF PREFERRED NONSTANDARD ITEMS 39 GENERAL. . e 39 Purpose . . . . . . . . . . . . . . . . . . . . 39 Guidance list of preferred non
11、standard synchros . . . 39 iv Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-7LOD 57 M 9999933 O099993 = , MIL-STD-710D 1. SCOPE 1.1 Scope. Thia standard establishes requirements for the selection and application of synchro6 for use in milit
12、ary equipmenta. following: Included are ,the a. A list of synchros considered by the Department of Defense as stahdard for use in the design of military equipments. b. Requirements for the application of synchros in military equipment. - Specific requirements for the synchroa Usted in this standarda
13、re included in the latest issue of MIL-S-20708 and its associated specification sheets. 1.2 Purpose. The purpose of this standard is to: a. Provide the equipment designer with a list of synchros from a Qualified Products List (QPL) considered acceptable for military applications. - I b. Restrict the
14、 number of synchro types used in mfPLkeq equipment in order to provide effective logistic support of fiel6 ecpipnent, snbto concentrate effort in the improvement of manufacturing technfquerp for the synchro types included in this standard. C. Establish criteria pertinent to choice, application, and
15、use of synchros in military equipment. -_ i *= 2. APPLICABLE DOCUMENTS *- 2.1 Government documents. 2.1*1 SDecifications and standards. The following apecifications and standards fom a part of this standard to th extent specifiedherein. Unless otherwise specified, the issues of these documents are t
16、hose listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) cited in the solicitation (see 6.2). SPECIFICTIONS .- MILITARY MIL-S-20708 Synchros, 60 and 400 Hz; and associated specification sheets. MIL-S-81963 Servocomponents, Precision Instrument, Rotating, C
17、ommon Requirements and Tests, General Specification for 1 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- - - _-_ MIL-STD-7LOD 59 m 99999LL 0099994 T I , MIL-STD-710D (Unless otherwise indicaled, copies qf federal and military specifications, standa
18、rds, and handbooks are available from the Standardization Document Order Desk, 700 Robbins Avenue, Building #4, Section D, Philadelpliia, PA 191 11-5094.) 2.2 Order of precedence. In the event of a conflict between the text of this standard and references cited herein, the text of MIL-8-20708 shall
19、take precedence. laws and regulations unless a specific exemption has been obtained. 3. DEFINITIONS Nothing in this document or MIL-S-20708 supersedes applicable 3.1 Synchro terminoloqy. The meaning of terms used in this standard are those commonly encountered in synchro engineering practice. a. Syn
20、chro - A synchro is an electromechanical analog converter which, through electromagnetic means, gives an electrical output that is a function of its rotor position; or positions its rotor to an angle that is a function of the electrical input. control. There are two types of synchros-torque and (1)
21、Torque synchro - Provides a mechanical output. (2) Control synchro - Provides an electrical output. b. Synchro System - A synchro system is a oircuit containing one or more synchros that operate on angular information and convey this information to one or more remotely located indicators. synchro sy
22、stems. There are also two types of (1) Torque Synchro System - A torque synchro system is a system in which the transmitted signal does actual work. (2) Control Synchro System - A control synchro system is a system in which the transmitted signal controle a source of power which does actual work. 3.
23、2 Nonstandard svnchros. Any synchro selected which is not listed in Table I of this standard shall be considered a nonstandard synchro. A Patt Approval Request for use of a nonstandard item shall be submitted when specified by the contracting activity as a deliverable data item (see 6.3). 2 Provided
24、 by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-73OD 59 W 9999933 0099995 3 W MIL-STD-7 10D 4. GENERAL REQUIREMENTS 4.1 Choice of synchro tvpes. For simplification and standardization, the number of synchro types appearing in any particular equipment
25、 shall be the minimum necessary to obtain specifie performance, consistent with established design practices. are designed for future military applications. The choice of synchro types to be incorporated in new equipments shall be confined to those types listed in Table I of this standard whenever p
26、ossible. For those applications where none of the types listed in Table I satisfy the requirements, a Part Approval Request for use of nonstandard synchros shall be submitted when specified by the contracting activity (see 6.3). The term “new equipments” includes: This document lists standard. synch
27、ro types, all of which a. Equipments basically new in design with no similar prototypes. b. EquipmenCs possessing a similar prototype, but completely redesigned electrically. The term ”new equipmentsvl does not include: a. Equipments that are merely reorders, without change, of existing equipment. b
28、. Equipments that are purely physical redesigns of existing. equipments. c. Equipments that are likely to be manufactured in very small quantities, as determined by the contracting activity. 4.2 Criteria for inclusion in the listins of standard svnchros. .The. criteria for the selection and inclusio
29、n of synchros in the list of standard synchros shown in Table I are: a. Coordinated MIL-S-20708 specification sheets must be available for the synchros. b. The synchro types must be listed on, or approved for listing on, the latest issue of QPL-20708. c. Synchros must have a part number ending with
30、-01 (plus the modification letter) to meet the NATO standardization requirements. I. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-7LOD 59 m MIL-STD-710D TABLE I. Listinu of standard synchros (as per 4.2L. Type Designat ion 26V-08CX4C 26V
31、-08CT4C 26V-08CDX4C 11CDX4B 11CT4E 11CX4E 26V-llTX4C 26V-llCT4D 26V-llCX4C 26V-llCDX4C 15CX4D 15CT4C 15CDX4D 15TDX4C 15TX4A 15CX6C 15CT6D 15CDX6C 15TX6A 18CX4D 18CT4C MIL-S-20708 Specification Sheet Number Latest Issue in Effect 78 79 80 81 8 9 14 15 16 17 19 20 21 22 23 28 29 Specification Military
32、 Part Number M20708/78-01C M20708/79-01C M20708/80-01C M20708/81-018 M20708/1-01E M20708/2-01E M20708/6-01C M20708/7-01D M20708/8-01C M20708/9-01C M20708/14-01D M20708/15-01C M20708/16-01C M20708/17-01C M20708/19-01A M20708/20-01C 4 Provided by IHSNot for ResaleNo reproduction or networking permitte
33、d without license from IHS-,-,-MIL-STD-7LOD 59 3999933 0099997 5 MIL-STD-710D TABLE I. Listinq of standard synchros (as Der 4.2) - Continued. Type Designat ion 18CDX4C 18TDX4C 18TRX4A 18CX6C 18CT6D 18TRX6B 18CDX6D 23CX4D 23CT4C 23CDX4C 23TDX4C 2 3TRX4A 23CX6D 23CT6D 23CDX6C 23TDX6C 23TRX6B 3 1TRXIA
34、31TRX6A 31TDX6C MIL-S-20708 . Specification Sheet Number Latest Issue in Ef fct 30 31 32 33 34 35 36 45 46 47 48 50 52 53 54 55 56 62 66 68 Specification Military Part Number 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ .- -_- MIL-STD-73OD 59
35、9999933 0099998 7 = MIL-STD-710D TABLE I. Listina of standard synchros (as Per 4.2) - Continued. Type MIL-S-20708 Specification Designat ion Specification Sheet Number Military Part Number Latest Issue in Effect 37TRX4A 70 M20708/70-01A 37TX6A 74 M20708/74-01A 37TDX6A 76 M20708/76-01A 4.3 Standard s
36、vnchros (functional listinaL. Standard torque synchros are listed in Table II. Standard control synchros are listed in Table III. TABLE II. Functional list of standard torque synchros. System Volt age (Volts) 26 115 115 115 115 115 15 115 115 115 115 400 400 60 400 60 400 60 400 60 400 60 Pransmitte
37、rs 26V-llTX4C Type Designation Receivers )if fsrential Cransmittera 15TDX4C 18TDX4C 23TDX4C 23TDX6C 3 1TDX6C 37TDX6A Receiver Cransmitters 15TX4A 15TX6A 18TX4A 18TRX6B 2 3TRX4A 23TRX6B 3 1TRX4A 31TRX6A 37TRX4A 37TX6A 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without lice
38、nse from IHS-,-,-System Voltage (Volt 8 ) MIL-STD-710D TABLE III. Functional list of standard control synchros. 26 115 26 115 115 115 115 115 115 400 400 400 400 60 400 60 400 60 Transmitters 26V-08CX4C 11CX4E 26V-llCX4C 15CX4D 15CX6C 18CX4D 18CX6C 23CX4D 23CX6D 4.4 Application and use. Type Designa
39、tion Transformers 26V-08CT4C 11CT4E 26V-llCT4D 15CT4C 15CT6D 18CT4C 18CT6D 23CT4C 23CT6D Differentials 26V-08CDX4C 11CDX4B 26V-llCDX4C 15CDX4D 15CDX6C 18CDX4C 18CDX6D 23CDX4C 23CDX6C 4.4.1 Electrical and physical tolerances. Military equipment shall comply with the performance specification requirem
40、ents of MIL-S-20708 and MIL-S-81963 when using synchros representative of manufactured lots possessing acceptable electrical and physical characteristics. 4.4.2 Selection and alterations. Equipment8 shall be designed to meet performance requirements when using standard synchros complying with the re
41、quirements of MIL-S-20708 and associated specification sheets. Alterations of standard synchros selected are not permitted. If any synchro needs modification to meet equipment requirements, it shall be treated as a nonstandard part. A Part Approval Request shall be submitted when required by the con
42、tracting activity as a deliverable data item (see 6.3). 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_- MIL-STD- _- ?LOD 4.4.3 Tests and inspections for equipment desk. Tests and inspections of synchros from vendors, in addition to those normall
43、y required for production acceptance test, shall not be performed, except as required to obtain information pertinent to equipment design. If additional tests should be necessary, a request for approval ko perform the tests, a description of the test procedures, and a test report shall be submitted
44、when required by contracting activity as deliverable data (see 6.3). When tests tend to degrade performance of useful life, synchros to which such tests are applied shall not subsequently be installed on deliverable equipment. 4.4.4 Tests and inspections for specification modifications. Supplemental
45、 tests and inspections o synchros, in addition to those normally required, may be considered by the Government for the purpose of modifying the appropriate military specification. The request for approval of such tests, a description of the test procedures, and a test report shall be submitted when
46、required by the contracting agency as deliverable data (see 6.3). 4.4.5 Application. Synchros incorporated into equipment shall be assigned functions consistent with applicable MIL-S-20708 specification sheets. It is the contractors responsibility to determine the proper operating points and realist
47、ic safety factors to insure satisfactory and reliable performance of the equipment, with anticipated variations of supply voltage and load variation due to temperature rise and accumulated manufacturing tolerances of the equipment. 4.4.5.1 Unspecified characteristics. Acceptable equipment performanc
48、e shall be a function of those synchro characteristics defined in MIL-S-20708 and the applicable specification sheet. a deliverable data item, performance based on unspecified synchro characteristics shall be substantiated by an Equipment Test Plan (Nonsystem) (see 6.3). When required by the contrac
49、ting activity as 4.5 Use of nonstandard svnchros. Appendix A contains information on the interchangeability of synchro types, including preferred standard replacements for superseded synchros (see Table IV). A listing of obsolete and prestandard synchros with their preferred substitutes (both standard and nonstand
