Table of Contents
1.0GENERALCONSIDERATIONS
1.1Objective
1.2InstallationLocations
1.2.1InstrumentPanelMountedEquipment
1.2.2PedestalMountedEquipment
1.2.3GlareShieldandSidePanelMountedEquipment
1.2.4OverheadandFlightEngineer'sPanels
1.3CoolingAirDuctsandPlenums
1.4StandardInternational(S.I.)Units
1.5LRUInterchangeability
1.6InstallationStandards
1.7RelationshipofCoolingPhilosophies
2.0BASICDESIGNSTANDARDS
2.1CoolingMedium
2.2ThreeCategoriesofCooling
2.3ThermalDissipationLimits(Maximums)
2.4SurfaceTemperatureLimits
2.4.1FaceTemperature
2.4.2ControlSurfaceTemperatures
2.4.3CaseTemperatureLimits(TypeAEquipmentOnly)
2.4.4HotSpotCaseTemperature(TypeBEquipmentOnly)
2.5CoolantAirFlowRate
2.5.1Flow-Through(TypeACooling)
2.5.2Flow-By(TypeB)Cooling
2.6AirPressureDropThroughTypeAEquipment
2.7CoolantAirQualityandManagement
2.7.1General
2.7.2AirFilters
2.7.3ParticleSize
2.8CoolantAirTemperature(TypesAandB)
2.9CoolantAirRelativeHumidity
2.10AmbientAirTemperature(TypeCEquipment)
2.11DesignVerification
2.12TrayMountingFormFactor
2.12.1BasicFormFactors
2.12.2Holddown/Extractor/Handle
2.13CoolingAirInterface
2.13.1MinimumHose/DuctSizes
2.13.2PanelMountedDisplays
2.13.3StandardforDZUSMountedCDU(TypeA)
2.13.4ForeignObjectScreen
3.0DESIGNCRITERIAANDGUIDANCE
3.1General
3.2MountingAreas
3.2.1InstrumentPanelMountedEquipment
3.2.2PedestalMountedUnits
3.2.3OtherMountingArea
3.3ProtrusionsontheCase
3.4CoolantAirLeakagefromtheEquipment
3.5ElectronicDesign
3.5.1EquipmentComponentPartsApplication
3.5.2Thermal(InternalSurvey)
3.5.3AbnormalOperation
3.6AirplaneCoolingProvision
3.6.1General
3.6.2AbnormalIn-FlightOperation
3.6.3IndicationofAirflow
3.6.4SupplementalCooling
3.7AcousticNoise
4.0APPRAISALCOOLING
4.1CoolingandThermalAppraisal
4.2CoolingInterfaces
4.3EquipmentDesignLimits
4.4ReferenceSurfaceTemperature(AllEquipment)
4.5EquipmentThermalAppraisal
4.5.1EquipmentThermalAnalysis
4.5.2IdentificationandDataTabulationforHeat
DissipatingandTemperatureCriticalParts
4.6ThermalInformation
ATTACHMENTS
1SummaryofCoolingLimitsandApplications
2FormFactorForPedestalMountedUnits
3TypicalTrayMountedFormFactor
4CDUHolddown/ExtractorHandle
5-1StandardFlow-ThroughCoolingforMS25212(DZUS)
MountedUnits(LargeUnits)
5-2StandardFlow-ThroughCoolingForMS25212(DZUS)
MountedUnits(SmallUnits)
6AirConnectionInterface
7TemperatureLimitForControlSurfaces
8-0NotesForAttachment8-1Through8-3
8-1TestParametersForTypeACooling(Flow-Through)
8-2TestParametersForTypeBCooling(Flow-By)
8-3TestParametersForTypeCCooling(NoCooling)
9CoolingEvaluationTest
10MaximumCaseTemperature
11OptionalFlow-ByCoolingForMS25212(DZUS)
MountedUnits
APPENDICES
1BibliographyoftheARINC601Control/Display
InterfacesProject Abstract
Provides standards for the effective control of the environment for avionic equipment, including basic design standards for avionics equipment and its installation to assure suitable thermal interfaces, design criteria, and cooling appraisal.
