Table of Contents
1.0INTRODUCTION
1.1Objectives
1.2Scope
1.3References
2.0VIBRATIONANDSHOCK
2.1Introduction
2.2VibrationandShockIsolation
3.0THERMALCONSIDERATIONS
3.1ThermalManagement
3.1.1ElectronicSystemThermalDesignObjectives
3.1.2DesignConditionDefinitions
3.1.3AirFlow
3.1.4FullyEnclosedandFlow-ThroughCooling
3.1.5ThermalDesignConditions
3.1.6CoolingHoleSizes-LimitCases
3.2ElectronicPartsApplication
3.3AmbientTemperatures
3.4EquipmentSidewallTemperature
3.5LRMThermalAppraisal
3.6ThermalInterfaceInformation
3.7MaterialsforThermalDesign
4.0DESIGNLIFE
4.1OperationalDesignLife
4.2FailureModes
4.3ServiceLife-Cycles/Duration
5.0INTRINSICSAFETY/EXPLOSIONPROOFNESS
5.1Introduction
5.2ExplosiveAtmosphere-PropagationofFlame
5.2.1SealedEnclosure
5.2.2UnsealedEnclosure
6.0ELECTROMAGNETICENVIRONMENTALCONSIDERATIONS
6.1Introduction
6.2LRMConsiderations
6.3CabinetConsiderations
6.4WireIntegrationAssembly
6.5Lightning-IndirectEffects
6.5.1DesignGuidelines
7.0SHIELDEDENCLOSURES
7.1Non-MetallicCompositeEnclosures
7.2MetallicEnclosures
7.2.1Construction
7.2.2CorrosionProtection
7.2.2.1DissimilarMetals
7.2.2.2CarbonFiber-MetalInterface
7.2.2.2.1WetAssembly
7.2.2.2.2DryAssembly
7.2.2.2.3Fasteners
7.3Penetrations
7.3.1MinimizingHarmfulEffects
7.3.2WaveguideTechniques
7.3.3StructuralGaps-HowTheyCanFormSlotAntennas
7.4SurfaceTreatments
7.4.1ChromateConversionFinishes
7.4.2SteelSurfaceTreatments
7.5Metal-to-MetalContactInterface
7.5.1TechniquestoMinimizeIntermodulationProduct(IP)
SignalEffects
7.6MeasuringShieldingEffectiveness
7.6.1CharacterizingShieldingEffectiveness
7.6.2ShieldingEffectivenessTestSet-Up
7.6.3TestMethodology
8.0ENVIRONMENTALSEALINGGASKETS
8.1OverviewofGasketForms,StylesandMaterialsand
RequiredAttributes
8.1.1LooseleafGaskets
8.1.2CombinationGaskets
8.1.3ElastomericCoreGaskets
8.2GasketSelection
8.2.1MajorCostDrivers
8.2.2EnvironmentalParameters
8.3Recommendations
9.0ELECTRICALBONDINGANDGROUNDING
9.1Purpose
9.2Considerations
9.3ElectricalBondingGrounding
10.0SYSTEMANDSUB-SYSTEMINTERCONNECTIONS-DESIGN
10.1LineDrivingandSegregation
10.1.1Bandwidth
10.1.2ImpedanceMatching
10.1.3Terminals,Conductors,andCables
10.2GroundingandTerminationofCableShields
10.2.1SignalLines
10.3ConnectorandCableTerminations
11.0FIBEROPTICINTERFACES
11.1FiberOpticInterfaceTechniques
11.2Terminations
11.3OpticalFiberTypes
12.0LIMITINGANDFILTERING
12.1Limiting
12.2Filtering
13.0ELECTROSTATICDISCHARGE(ESD)ANDEQUIPMENT
HANDLINGANDSAFETY
13.1Introduction
13.2LRM-ESDHandlingConstraint
13.3DesignConsiderations
13.4Marking
13.5ProtectivePackaging
13.6EquipmentHandlingProceduresWithintheAircraft
Environment
13.6.1SafeHandlingProcedurestoPreventEquipmentDamage
13.6.2PersonnelSafety
13.6.2.1SafeHandling-WeightLimits
13.6.2.2ElectricalShock
13.6.2.3EquipmentSurfaceTemperatures
13.6.2.4FlammabilityandToxicity
13.6.2.5X-RayRadiation
13.6.2.6ImplosionExplosion
13.6.2.7HazardAwareness
14.0QUALIFICATIONTESTING
14.1Scope
14.2TheCabinet
14.3TheLRMs
14.3.1TestPhilosophy
14.3.1.1ConductedSusceptibilityTesting
14.3.1.2ConductedEmissionTesting
14.3.1.3RadiatedEmissionTesting
14.3.1.4RadiatedSusceptibilityTesting
APPENDIX
AAcronymList Abstract
Refers electromagnetic compatibility, shielding, thermal management, vibration and shock of IMA systems. Emphasis is placed both on the design of IMA components and their electrical, optical and electro-mechanical interfaces.
