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 2016 SAE InternationalAll rights reserved. No part of this publi
3、cation 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 (out
4、side USA)Fax: 724-776-0790Email: CustomerServicesae.orgSAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedbackon this Technical Report, please visithttp:/www.sae.org/technical/standards/AIR6114AEROSPACEINFORMATION REPORTAIR6114Issued 2016-09Interface for Micro Munition (IMM) Han
5、dbookRATIONALEThis handbook provides information on the implementation of the Interface Standard, Interface for Micro Munitions (IMM), as defined in AS5726, into both current and future Micro Munition Hosts and Micro Munitions. This handbook provides guidance on design considerations, background inf
6、ormation and rationale on AS5726 requirements, and other useful information for implementation of the IMM interface.TABLE OF CONTENTS1. SCOPE 31.1 Scope 31.2 Background . 31.3 Application. 32. REFERENCES 32.1 Applicable Documents 32.1.1 General 32.1.2 SAE Publications. 32.1.3 ANSI Publications . 42.
7、1.4 Government Publications 42.2 Definitions . 42.3 Acronyms and Abbreviations 53. GENERAL . 63.1 Interface Set and Classes. 63.1.1 Overlay of Digital Data and Power Interfaces. 83.1.2 Digital Data Interfaces. 83.1.3 Mated Status Interface 83.1.4 Safety Enable Discrete Interface 93.1.5 Power Interfa
8、ces . 93.1.6 Structure Ground Interface . 104. COMMENTARY ON THE REQUIREMENTS OF AS5726 . 104.1 Host Requirements . 104.1.1 Host: Mated Status Interface . 104.1.2 Host: Safety Enable Discrete Interface. 124.1.3 Host: Fibre Channel Interface 134.1.4 Host: Power Interfaces. 144.1.5 Host: Structure Gro
9、und Interface 194.2 Micro Munition Requirements . 194.2.1 Micro Munition: Mated Status Interface . 194.2.2 Micro Munition: Safety Enable Discrete Interface 204.2.3 Micro Munition: Fibre Channel Interface 21SAE INTERNATIONAL AIR6114 Page 2 of 334.2.4 Micro Munition: Power Interfaces. 224.2.5 Micro Mu
10、nition: Structure Ground Interface. 254.3 Interface Initialization 254.3.1 Host Initialization Requirements . 264.3.2 Micro Munition Initialization Requirements . 274.4 Power Interface Interrupts. 284.4.1 Micro Munition Compatibility . 284.4.2 Host Compatibility . 284.4.3 Micro Munition Power Interr
11、upt Notification 294.5 Fibre Channel and Power Overlay Requirements 294.5.1 Power and Data Interface Isolation Requirements . 294.6 Connector Characteristics. 314.6.1 Connector Usage 314.6.2 MMHI Connector . 324.6.3 IMM Connector 324.6.4 Contacts 324.6.5 Connector Insert Arrangement 324.6.6 Connecto
12、r Location and Orientation . 335. NOTES 335.1 Revision Indicator 33FIGURE 1 IMM SIGNAL SET FROM FIGURE 1 OF AS5726 7FIGURE 2 DIGITAL DATA AND POWER INTERFACES SCHEMATIC FROM FIGURE 2 OF AS5726. 8FIGURE 3 MATED STATUS INTERFACE SCHEMATIC FROM FIGURE 3 OF AS5726 . 11FIGURE 4 XAMPLE OF A SAFETY-CRITICA
13、L FUNCTION 15FIGURE 5 ISOLATION NETWORK SCHEMATIC FROM FIGURE 9 OF AS5726 30FIGURE 6 CONNECTOR USAGE EXAMPLE FROM FIGURE 10 OF AS5726 31TABLE 1 STANDARD MAPS OF UFC AND DFC FROM FC-PI TO IMM SIGNALS. 13TABLE 2 TANDARD OVERLAYS OF FIBRE CHANNEL AND POWER SIGNALS 14SAE INTERNATIONAL AIR6114 Page 3 of
14、331. SCOPE1.1 ScopeThis document was prepared by the SAE AS-1B1 IMM Task Group to explain and document background information and design decisions made during the development of AS5726. This handbook is published separately to preserve information that is not required or provided in the AS5726 but m
15、ay be important to system designers to ensure interoperability between the Micro Munition Host and Micro Munition. As a handbook, it cannot be invoked as a requirement in a contract.The structure and numbering of this document mirrors that of AS5726 for the convenience of readers. Headings such as “
16、Requirements” in this handbook should not be interpreted as invoking requirements.1.2 BackgroundThe information contained in this handbook is intended to provide the Micro Munition system designer with the following types of information:x A thorough understanding of the requirements imposed by AS572
17、6.x Identification of design problem areas that could contribute to an interface incompatibility.x A presentation of design techniques, components and design practices that might be useful in implementing A5726.x Practical guidance and associated rationale for users of AS5726 in future applications.
18、1.3 ApplicationThis handbook is applicable to AS5726, Revision A only.2. REFERENCES2.1 Applicable DocumentsThe following publications form 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
19、 issue in effect on the date of the purchase order. In theevent of conflict between the text of this document and references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been ob
20、tained.2.1.1 GeneralThe documents listed in this section are referenced in Sections 3, 4, and 5 of this handbook.2.1.2 SAE PublicationsAvailable from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.
21、sae.org.AS5653 High Speed Network for MIL-STD-1760AS5725 Interface Standard, Miniature Mission Store InterfaceAS5726 Interface Standard, Interface for Micro MunitionsSAE INTERNATIONAL AIR6114 Page 4 of 332.1.3 ANSI PublicationsCopies of these documents are available online at http:/webstore.ansi.org
22、/.FC-PI ANSI INCITS 352-2002 Fibre Channel Physical interfaces2.1.4 Government PublicationsCopies of these documents are available online at http:/quicksearch.dla.mil.Specifications, Standards, and HandbooksThe following specifications, standards, and handbooks form a part of this document to the ex
23、tent specified herein.MIL-DTL-38999 Connectors, Electrical, Circular, Miniature, High Density, Quick Disconnect (Bayonet, Threaded, and Breech Coupling), Environment Resistant, Removable Crimp and Hermetic Solder Contacts, General Specification ForMIL-STD-704 Department of Defense Interface Standard
24、 for Aircraft Electrical Power CharaceteristicsMIL-HDBK-1760 Department of Defense Handbook for Aircraft/Store Electrical Interconnection SystemMIL-STD-1760 Department of Defense Interface Standard for Aircraft/Store Electrical Interconnection SystemRevision EMIL-STD-8591 Department of Defense Desig
25、n Criteria Standard for Airborne Stores, Suspension Equipment and Aircraft-Store Interface (Carriage Phase)MIL-STD-1560 Department of Defense Standard: Insert Arrangements for MIL-DTL-38999, MIL-DTL-27599, and SAE-AS26900 Series A Electrical Circular Connectors2.2 DefinitionsDefinitions applicable t
26、o this standard are as follows:2.2.1 HOST: Any system capable of carrying, interfacing with, and employing Micro Munitions. The term includes Platforms such as aircraft, ground vehicle (armored vehicles, trucks), armed man portable, installations, nautical vehicle (boat, ship or submersible), and Mi
27、cro Munition Carriage Systems.2.2.2 ELECTRICAL INTERFACE TYPES: The two electrical interface types for the Host/Micro Munition electrical interconnection system are specified below.2.2.2.1 MICRO MUNITION HOST INTERFACE (MMH): The electrical interface on the Host structure where the Micro Munition is
28、 electrically connected either directly (blind mate) or via an interconnecting umbilical cable.2.2.2.2 INTERFACE FOR MICRO MUNITION (IMM): The electrical interface on the Micro Munition external structure or interconnecting umbilical cable that mates with an MMHI.2.2.3 MICRO MUNITION: A Micro Muniti
29、on is a weapon typically characterized by a mass up to 25 kilograms (55.12 pounds) and a minimum outer diameter of 38 mm (1.50 inches). Note that this does not prohibit other stores from using AS5726.2.2.4 FIBRE CHANNEL (FC): Fibre Channel is the name for a high-speed network standard defined by a s
30、eries of ANSI standards.SAE INTERNATIONAL AIR6114 Page 5 of 332.2.5 SAFETY CRITICAL: An interface operation (electrical, logical or a combination of both) at the MMHI or IMM is deemed safety critical when it causes the Micro Munition to perform functions that have the potential to generate Micro Mun
31、ition behavior that may present a hazard to the Host, crew or ground handling personnel.2.2.6 SAFETY SIGNIFICANT: This term identifies that object as having an impact on safety, whether determined through risk analysis or other means, that exceeds a predetermined significance criterion.2.3 Acronyms
32、and AbbreviationsThe following acronyms and abbreviations are applicable.A AmperesAC Alternating CurrentANSI American National Standards InstituteAWG American Wire GaugeCOTS Commercial off-the-shelfCTSS Commit to Store SeparatedBV Decibel voltage relative to 1 VoltDAPS Document Automation and Produc
33、tion ServicesDC Direct CurrentDFC Down Fibre ChannelEMC Electromagnetic CompatibilityEMI Electromagnetic InterferenceF FrequencyFC Fibre ChannelFC-PI Fibre Channel Physical InterfacesGbaud GigabaudGbps Gigabit per secondGHz GigahertzICD Interface Control DocumentIMM Interface for Micro MunitionsINCI
34、TS International Committee for Information Technology StandardsKohm kiloohmL InductanceSAE INTERNATIONAL AIR6114 Page 6 of 33Mbaud MegabaudMbytes MegabyteMHz MegahertzMMHI Micro Munition Host InterfaceMMSI Miniature Mission Store InterfacemA Milliamperesms MillisecondsMv MillivoltNT Network Terminal
35、RD Receive DataSAE Society of Automotive EngineersSR Safety Enable Discrete and Store Control Message verification) will be controlled by independent mechanisms so that common mode faults can be avoided.3.1.5 Power InterfacesThe Host supplies and controls both Operating Power and Safety Enable Power
36、 (including associated dedicated returns) to each MMHI. These are independent power sources intended for different purposes, with separation maintained on both sides of the interface to simplify system safety analysis and certification. In contrast to MIL-STD-1760 and AS5725, the power that the IMM
37、Host must supply is specified as highly conditioned with relatively tight regulation and power quality requirements. This places most of the cost and complexity burden of providing acceptable quality power to the Micro Munition electronics on the Host, as opposed to the expendable Micro Munition. Mi
38、cro Munitions also likely to be manufactured in much larger quantities than Host platforms or carriage devices, further justifying the case for allocating most of the cost and complexity to the Host.3.1.5.1 Operating PowerOperating Power is supplied to the Micro Munition by the Host for the purpose
39、of powering internal electronics for basic operation in conjunction with non-safety-critical functions. A lower level excitation voltage may also be applied to the Operating Power interface by the Host for sensing the presence (or absence) of an attached Micro Munition (serves same function as MIL-S
40、TD-1760 interlock), prior to application of full Operating Power.Two classes of Host are supported by the standard from an Operating Power perspective, as follows:x Class I Host supplies 28V DC 5% on the Operating Power interface.x Class II Host supplies 28V DC followed by 56V DC 5% on the Operating
41、 Power interface.SAE INTERNATIONAL AIR6114 Page 10 of 33Note that the Class II Operating Power capability is optional, and is intended for use with Micro Munitions which require higher power than available via the 28V DC Class I capability. The higher Class II Operating Power voltage supports higher
42、 power transfer at lower current levels compatible with smaller wire and connector contact sizes than would be feasible with 28V DC, yet is still below levels which would present a potential personnel shock hazard. It also avoids the need for a separate higher power interface in the signal set like
43、the Auxiliary Connector in MIL-STD-1760, which would require additional wiring and increase the interface footprint and required connector size. The Class I 28V DC level was retained for compatibility with the significant inventory of legacy platforms which may eventually carry Micro Munitions. Host
44、 procedures for initial power application and class determination of an attached Micro Munition are described in Section 4.1.1.Micro Munition designers should be cognizant of the fact that maximum compatibility with various platforms will be achieved if Micro Munition Operating Power requirements ca
45、n be maintained within the Class I capability level. Where feasible and when determined to be of operational value, Micro Munitions requiring Class II level Operating Power capability for full functionality should be designed with a more limited functionality option that permits operation within the
46、 Class I capabilitylimits.3.1.5.2 Safety Enable PowerThe Safety Enable Power supply must be controlled separately from the Operating Power. The precise implementation is left to the designer in order to match the system requirements at hand. The duration is limited to two seconds in order to limit t
47、he requirements on the Host power supply. Two seconds also allows the Host to sequence Safety Enable signals so as to limit the number of simultaneous safety enable power signals that must be supported. This allows the Host to limit theoverall power draw at the system level if desired.3.1.6 Structur
48、e Ground InterfaceThe structure ground interface provides a ground path for dissipation of static buildup as well as a current path for abnormalsituations or fault conditions. It is essentially a safety feature that prevents external voltage differentials from building up between a store and the Hos
49、t. It is not to be used as a normal return path.4. COMMENTARY ON THE REQUIREMENTS OF AS57264.1 Host Requirements4.1.1 Host: Mated Status InterfaceThe Mated Status Interface provides an indication of the electrical mated status at the connector interface between the Host and Micro Munition. The Host Mated Status interface, as represented in Figure 3 below, consists of a single discrete signal that is used by both the
