Course Number: 1760
Length: 2 Days
MIL-STD 1760 provides a common electrical and digital interface between weapons and aircraft.
The standard MIL-STD-1760 connector is used to transfer guidance information to weapons. MIL-STD-1760 mission stores include, but are not limited to, the GBU-32 Joint Direct Attack Munitions (JDAM), the AGM-154 Joint Standoff Weapon (JSOW), and the CBU-103, CBU-104 and CBU-105 Wind Corrected Munitions Dispensers (WCMDs).
This standard defines the connector, signal set definitions, topologies, types of interfaces, signal path requirements, and power along with special requirements for MIL-STD-1553 bus interfaces. This includes a command set with detailed message formats, along with a defined protocol for mass data transfer. In 2008, the SAE AS-1A2 task group released AS5653, the High Speed Network for MIL-STD-1760, aka High-Speed 1760.
The standard also defines a gigabit-speed communication option for MIL-STD-1760. AS5653 specifies a network based on Fibre Channel, operating at 1.0625 Gb/s over a pair of 75 ohm coaxial cables. The choice of 75 ohm coaxial cable was based on environmental ruggedness (relative to fiber optics) and the availability of positions for coax cable inserts in the MIL-STD-1760 connector.
Before adoption and widespread use of MIL-STD-1760, new store types were added to aircraft using dissimilar, proprietary interfaces. This greatly complicated the aircraft equipment used to control and monitor the store while it was attached to the aircraft: the stores management system, or SMS.
There are several main groups of MIL-STD-1760 signals such as the MIL-STD-704 power connections that provide the store with access to 28 VDC, three-phase wye 400 Hz, 115/200 VAC and 270 VDC aircraft power. Normally, only one of the last two supplies are routed, however, if both are made available, then they are never made active simultaneously.
The MIL-STD-1760 interface provides power through the primary interface (two off 28 VDC and either one or both 115/200V VAC and 270 VDC), where it is routed to the store along with all of the other signal types. The standard also allows for an optional auxiliary power interface (1 off 28 VDC and either 115/200 VAC or 270 VDC) for stores with more demanding power requirements.
The protocols defined by the High Speed Network for MIL-STD-1760 have been incorporated into three weapons interface standards:
- For MIL-STD-1760E, MIL-STD-1553 is a required interface, with the Class I option also providing SAE AS5653
- For SAE AS5725, MMSI (Miniature Munitions Store Interface) Rev. D, EBR-1553 is a required interface, with the Class I option also providing AS5653
- AS5653 is the only interface defined for SAE draft standard AS5726, the Interface for Micro Munitions, or IMM. This standard is expected to be published in 2009. IMM, which is intended for use on small weapons (under 50 pounds) and for UAVs, specifies the provision of 28V or 56V power over Fibre Channel, which enables the use of a small, 7-pin connector.
Another protocol incorporated into High-Speed 1760 is FFI, or Fast Fabric Initialization. FFI provides modifications to the standard Fibre Channel protocol for assigning switch addresses over a multi-switch fabric. For a weapons network, this could entail multiple switches, on the aircraft, and/or installed in launchers, racks or weapons. The benefits of FFI for a weapons network include deterministic switch addressing, along with reduced time for initialization and re-initialization following power outages.
MIL-1760 Training Course by Tonex
MIL-1760 training course covers MIL-STD-1760 Aircraft/Store Electrical Interconnection System The course covers technical aspects of the electrical interface between a military aircraft and its carriage stores.
This course has been developed to provide a general overview of MIL-STD-1760 and its specifications and applications.
The course includes description of MIL-STD-1760 signals including:
- MIL-STD-704 power connections
- MIL-STD-1553 data communications interface
- high and low bandwidth analog signals
- discrete signals
- fiber optics
Who Should Attend
Engineers and Managers
MIL-STD-1760 defines the electrical characteristics of the signals at the interface, as well as the connector and pin assignments of all of the signals used in the interface Upon completion of this course, the attendees are be able to:
- Describe what MIL-STD-1760 is
- Understand MIL-STD-1760 characteristics
- Describe MIL-STD-1760 architecture
- Explain requirements, design and, testing aspects of MIL-STD-1760
- Introduction to MIL-STD-1760
- Aircraft/store Configurations
- Aircraft Requirements
- Mission store Requirements
- Carriage store Requirements
- Umbilical cable requirements
- Power Interface Interrupts
- MIL-STD-1760 MIL-STD-1760 Systems Engineering: Requirements, Design, Implementation and Testing
- MIL-STD-1760 Requirements
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