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 revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions.Copyright 2013 SAE International All rights reserved. No part of this pub
3、lication may 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
4、(outside USA) 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/AS5726AAEROSPACESTANDARDAS5726 REV. AIssued 2009-12 Revised 2013-09 Superseding AS57
5、26 Interface Standard, Interface for Micro Munitions RATIONALEThis standard was developed by SAE International. It defines implementation requirements for the electrical interface between Hosts and Micro Munitions. The intent of this standard is to minimize proliferation of electrical interfaces bet
6、ween Micro Munitions and associated Hosts and thereby promote interoperability of Micro Munitions across different programs and services. This document was revised to incorporate editorial and technical comments received and coordinated by SAE AS-1B1 Micro Munitions Interface Task Group. TABLE OF CO
7、NTENTS 1. SCOPE 31.1 Purpose . 31.2 Application . 32. APPLICABLE DOCUMENTS 32.1 General . 32.1.1 SAE Publications . 32.1.2 ANSI Publications . 32.1.3 U.S. Government Publications 42.2 Order of Precedence . 43. DEFINITIONS . 43.1 Definitions . 43.1.1 Host . 43.1.2 Electrical Interface Types 43.1.3 Mi
8、cro Munition . 43.1.4 Fibre Channel (FC) . 43.1.5 Safety Critical 53.2 Acronyms and Abbreviations 54. GENERAL . 64.1 Interface Set and Classes. 64.1.1 Overlay of Digital Data and Power Interfaces . 74.1.2 Digital Data Interfaces . 74.1.3 Mated Status Interface 74.1.4 Safety Enable Discrete Interface
9、 84.1.5 Power Interfaces . 84.1.6 Structure Ground interface 9SAE INTERNATIONAL AS5726A Page 2 of 29 5. REQUIREMENTS . 95.1 Host requirements . 95.1.1 Host: Mated Status Interface 95.1.2 Host: Safety Enable Discrete Interface . 95.1.3 Host: Fibre Channel Interface . 115.1.4 Host: Power Interfaces 11
10、5.1.5 Host: Structure Ground Interface 185.2 Micro Munition Requirements . 185.2.1 Micro Munition: Mated Status Interface 185.2.2 Micro Munition: Safety Enable Discrete Interface . 185.2.3 Micro Munition: Fibre Channel Interface . 195.2.4 Micro Munition: Power Interfaces 205.2.5 Micro Munition: Stru
11、cture Ground Interface 235.3 Interface Initialization 235.3.1 Host Initialization Requirements . 235.3.2 Micro Munition Initialization Requirements . 245.4 Power Interface Interrupts . 245.4.1 Micro Munition Compatibility . 245.4.2 Host Compatibility . 245.4.3 Micro Munition Power Interrupt Notifica
12、tion 255.5 Fibre Channel and Power Overlay Requirements 255.5.1 Power and Data Interface Isolation Requirements . 255.6 Connector Characteristics . 265.6.1 Connector Usage 265.6.2 MMHI Connector . 275.6.3 IMM Connector 275.6.4 Contacts 275.6.5 Connector Insert Arrangement 285.6.6 Connector Location
13、and Orientation . 286. NOTES 29FIGURE 1 INTERFACE SIGNAL SET . 6FIGURE 2 DIGITAL DATA AND POWER INTERFACES SCHEMATIC 7FIGURE 3 MATED STATUS INTERFACE SCHEMATICS 8FIGURE 4 CLASS I MICRO MUNITION OPERATING POWER CURRENT LEVEL 13FIGURE 5 CLASS II MICRO MUNITION OPERATING POWER CURRENT LEVEL . 14FIGURE
14、6 STABILIZATION TIME 15FIGURE 7 SAFETY ENABLE POWER INTERFACE CURRENT LEVEL 17FIGURE 8 SAFETY ENABLE POWER TIMELINE . 18FIGURE 9 ISOLATION NETWORK SCHEMATIC . 25FIGURE 10 CONNECTOR USAGE EXAMPLE . 27FIGURE 11 CONNECTOR INSERT ARRANGEMENT . 28TABLE 1 CONNECTOR CONTACTS 27TABLE 2 CONNECTOR CONTACT FUN
15、CTIONAL ASSIGNMENT . 27TABLE 3 CONNECTOR CONTACT LOCATIONS 28SAE INTERNATIONAL AS5726A Page 3 of 29 1. SCOPE This standard only defines interconnect, electrical and logical (functional) requirements for the interface between a Micro Munition and the Host. The physical and mechanical interface betwee
16、n the Micro Munition and Host is undefined. Individual programs will define the relevant requirements for physical and mechanical interfaces in the Interface Control Document (ICD) or system specifications. It is acknowledged that this does not guarantee full interoperability of Interface for Micro
17、Munitions (IMM) interfaces until further standardization is achieved. 1.1 Purpose The purpose of this standard is to minimize proliferation of divergent electrical interfaces between the Host and Micro Munitions to promote interoperability across different programs and services. 1.2 Application This
18、 standard applies to all Hosts and Micro Munitions that electrically interface with each other. A Micro Munition is a weapon characterized by a mass up to 25 kg and a minimum outer diameter of 38 millimeters. Other munitions may use this standard. 2. APPLICABLE DOCUMENTS The following publications f
19、orm a part of this document to the extent specified herein. The latest issue of SAE publications shall apply. The applicable issue of other publications shall be the issue in effect on the date of the purchase order. In the event of conflict between the text of this document and references cited her
20、ein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 2.1 General The documents listed in this section are referenced in Sections 3, 4, and 5 of this standard. This section does no
21、t include documents cited in other sections of this standard or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements documents cited in Sections 3,
22、4, and 5 of this standard, whether or not they are listed. 2.1.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org.AS5653 High Speed Network for MIL-STD-1760 AS390
23、29/56 Contacts, Electrical Connector, Socket, Crimp Removable (For MIL-C-38999 Series I, III, and IV Connectors)AS39029/58 Contacts, Electrical Connector, Pin, Crimp Removable (For MIL-C-24308, MIL-C-38999 Series I, II, III, and IV, and MIL-C-55302/69 and MIL-C-83733 Connectors) 2.1.2 ANSI Publicati
24、ons Available from American National Standards Institute, 25 West 43rd Street, 4th Floor, New York, NY 10036-8002, Tel: 212-642-4900, www.ansi.org.FC-PI ANSI INCITS 352-2002 Fibre Channel - Physical Interfaces SAE INTERNATIONAL AS5726A Page 4 of 29 2.1.3 U.S. Government Publications Available from D
25、LA Document Services, Building 4/D, 700 Robbins Avenue, Philadelphia, PA 19111-5094, Tel: 215-697-6396, http:/quicksearch.dla.mil/.MIL-DTL-38999L Connectors, Electrical, Circular, Miniature, High Density, Quick Disconnect (Bayonet, Threaded, and Breech Coupling), Environment Resistant, Removable Cri
26、mp and Hermetic Solder Contacts, General Specification For MIL-DTL-38999L Supplement 1 Connectors, Electrical, Circular, Miniature, High Density, Quick Disconnect (Bayonet, Threaded, and Breech Coupling), Environment Resistant, Removable Crimp and Hermetic Solder Contacts, General Specification For
27、MS27488N Plug, End Seal, Electrical Connector MIL-STD-1760E Interface Standard For Aircraft/Store Electrical Interconnection System 2.2 Order of Precedence In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothin
28、g in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. DEFINITIONS 3.1 Definitions Definitions applicable to this standard are as follows. 3.1.1 Host Any system capable of carrying, interfacing with, and employing Micro Munitions. Th
29、e term includes Platforms such as aircraft, ground vehicle (armored vehicles, trucks), armed man portable, installations, nautical vehicle (boat, ship or submersible), cruise missiles, and Micro Munition Carriage Systems.3.1.2 Electrical Interface Types The two electrical interface types for the Hos
30、t/Micro Munition electrical interconnection system are specified below. 3.1.2.1 Micro Munition Host Interface (MMHI) The electrical interface on the Host structure where the Micro Munition is electrically connected either directly (blind mate) or via an interconnecting umbilical cable. 3.1.2.2 Inter
31、face for Micro Munitions (IMM) The electrical interface on the Micro Munition external structure or interconnecting umbilical cable that mates with an MMHI.3.1.3 Micro Munition A Micro Munition is a weapon typically characterized by a mass up to 25 kg and a minimum outer diameter of 38 mm.3.1.4 Fibr
32、e Channel (FC) FC is the name for a high-speed network standard defined by a series of ANSI INCITS standards.SAE INTERNATIONAL AS5726A Page 5 of 29 3.1.5 Safety Critical An interface operation (electrical, logical or a combination of both) at the MMHI or IMM is deemed safety critical when it causes
33、the Micro Munition to perform functions that have the potential to generate Micro Munition behavior that may present a hazard to the Host, crew or ground handling personnel. 3.2 Acronyms and Abbreviations The following acronyms and abbreviations are applicable. AC Alternating Current ANSI American N
34、ational Standards Institute dBV Decibel voltage relative to 1 Volt DC Direct Current DFC Down Fibre Channel ENB EnableF FrequencyFC Fibre Channel FC-PI Fibre Channel Physical Interface GHz GigahertzICD Interface Control Document IMM Interface for Micro Munitions INCITS International Committee for In
35、formation Technology Standards kg Kilogramkohm KilohmMHz MegahertzMMHI Micro Munition Host Interface ms Millisecondsns NanosecondsmV MillivoltRD Receive Data TD Transmit Data UFC Up Fibre Channel SAE INTERNATIONAL AS5726A Page 6 of 29 H MicrohenryV VoltW Watt4. GENERAL 4.1 Interface Set and Classes
36、The interface set, as shown in Figure 1, consists of interfaces for digital data transfer, discrete signals, and power. Data and power share the same physical interfaces. Detailed electrical requirements for each of these interfaces at the MMHI and IMM are specified in Section 5.Two IMM classes are
37、defined, providing different capabilities over the same set of physical interfaces: Class I provides 28 V DC regulated power on the Operating Power interface, and the power available on this interface is 85 W continuous. Class II provides 56 V DC regulated power on the Operating Power interface, and
38、 the power available on this interface is 200 W continuous. For either Class I or Class II, Safety Enable Power is 28 V DC as further specified in 5.1.4.2. This standard includes provisions to ensure that Class I Micro Munitions will not be damaged when connected to Class II Hosts. Class II Micro Mu
39、nitions may also operate with a full or diminished capability as Class I Micro Munitions. FIGURE 1 INTERFACE SIGNAL SET SAE INTERNATIONAL AS5726A Page 7 of 29 Figure 2 represents a concept schematic of the IMM signal set and of the interactions between Host and Micro Munition functional circuits. FI
40、GURE 2 DIGITAL DATA AND POWER INTERFACES SCHEMATIC 4.1.1 Overlay of Digital Data and Power Interfaces This interface provides power and data to the Micro Munition on the same signal pair. Data from the Micro Munition is transferred on the same signal pair as Operating Power and Operating Power Retur
41、n. Data to the Micro Munition is transferred on the same signal pair as Safety Enable Power and Safety Enable Power Return. This is accomplished by inserting a low pass filter on the DC path, and a high pass filter on the data path as exemplified in Figure 2. 4.1.2 Digital Data Interfaces The digita
42、l data interface consists of a high speed network (Down Fibre Channel (DFC) and Up Fibre Channel (UFC) in accordance with AS5653 (High Speed Network for MIL-STD-1760) as modified by the requirements of Section 5 herein.The Host assigns, controls, and routes FC messages to their proper destinations b
43、y means of the services provided by the FC protocol. 4.1.3 Mated Status Interface The Mated Status interface is a discrete signal path available for both the Host and Micro Munition to monitor the electrically mated status of the other. Figure 3 depicts the use of the Mated Status interface. SAE INT
44、ERNATIONAL AS5726A Page 8 of 29 FIGURE 3 MATED STATUS INTERFACE SCHEMATICS 4.1.4 Safety Enable Discrete Interface The Safety Enable Discrete interface is a low power discrete used only to enable and inhibit safety critical Micro Munition functions which are commanded via the DFC interface (see 4.1.2
45、). CAUTIONThe Safety Enable Discrete interface is provided to enable a safety or irreversible function within the Micro Munition. The discrete should only be enabled when the Host determines that safety criteria for the Micro Munition safety or irreversible function have been met. 4.1.5 Power Interf
46、aces The Host supplies and controls all power to Micro Munitions through the MMHI. One Operating Power and one Safety Enable Power source are supplied through each interface. A dedicated power return is provided through the interface for each power source. The Host may apply Operating Power at any t
47、ime after sensing that the Micro Munition Mated Status is mated as defined in 5.1.2. 10 Kohm10%HHostMunitionOperating Power /UFC_H10 Kohm10 %MMated StatusOperating PowerReturn /UFC_LHost IsolationNetworkMunition IsolationNetworkHost IsolationNetworkMunition IsolationNetworkNote: Only DC path of isol
48、ation networks shown. Diodes on the Munition side of the interfaceare assumed as part of a typical implementation, but not required by the standard.,MunitionPowerSupplyOperatingPowerThermaBatterySAE INTERNATIONAL AS5726A Page 9 of 29 4.1.5.1 Operating Power Operating Power is supplied to each Micro
49、Munition by the Host for basic operation of Micro Munition internal electronics and performance of non-safety-critical functions. Class I Hosts supply 28 V DC 5% on the Operating Power interface. Class II Hosts supply 28 V DC followed by 56 V DC 5% on the Operating Power interface. Both Class I and Class II Hosts may also supply a lower excitation voltage, prior to application of Operating Power, in order to test for the prese
