ice protection © 2011 tron aviation flight operations and pilot training program version 3.0
TRANSCRIPT
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Ice Protection
© 2011 Tron Aviation
Flight Operations and Pilot Training Program
Version 3.0
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• System Overview– Windshield Heat– Heated Air Data Probes and Ports – Heated Engine Inlet Cowls – Leading Edge De-ice Boots– Ice Protection System Limitations
• System Operation– Windshield Heat– Heated Air Data Probes and Ports– Heated Engine Inlet Cowls– Leading Edge De-Ice Boots– Controls and Indications
• Anti/De-ice system malfunction indications and color-logic• Ice protection system CAS messages
• System Review
What You Will Learn
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System Overview
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System Overview
• Windshield Heat– Heated mats placed in both left and right windshields
• Heated air data probes and ports– Electrically heated probes and ports– Probes automatically regulate, monitored by the ACS
• Heated Engine Inlet Cowls– Powered by engine bleed air– Anti-ice feature to provide ice ingestion prevention
• Leading Edge De-Ice boots – Provide de-ice capability– On wing & horizontal stabilizer leading edges
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Limitations & Specifications
• Flight into known icing conditions is prohibited
• Use of Windshield Heat is prohibited
• Use of Leading Edge De-Ice Boots is prohibited
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System Operation
Flight Operations and Pilot Training Program
Version 3.0
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Windshield Heat
• Both the right and left windshields have a heater mat which will cause super cooled liquid water to remain in a liquid state while in contact with the windshield
• After selected On by the pilot, the ACS automatically cycles windshield heat on and off to prevent windshield overheat which would occur at 180°F
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Heated Probes and Ports
• All probes are self-regulating and automatically heated for both ground and flight operations
• Are monitored by the ACS for overheat protection
• Begin heat cycle with at least one engine running or if selected ON by the pilot
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Heated Engine Inlet Cowl
• Engine cowls are heated with engine bleed air
– Bleed air is ducted through piccolo tubes which deliver hot air to a large surface area around the cowl
– The air is then dumped overboard through an exhaust port
– Take off performance will be reduced when ANTI ICE is onExhaust Port
Piccolo Tube inlet port Inlet Lip
Attachment Flange
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Leading Edge De-Ice Boots
• Engine bleed air is fed through a regulating valve on engine to:
– A pneumatic distribution valve to inflate and deflate the boot
OR– To engine inlet cowls for engine anti-ice
– After the air has been used to heat the cowls it is dumped overboard
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Controls and Indications
Flight Operations and Pilot Training Program
Version 3.0
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Controls and IndicationsTwo Position Ice LightThree Position Engine/Wing Switch
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Ice Protection Synoptic
• Anti/De-ice also controlled and monitored
on the ICE protection synoptic page
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Synoptic Page
• Color Logic…
• White Outline: means the system is off
• Green: means the system is on
• Amber: means the system has failed
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Abnormal Operations
Flight Operations and Pilot Training Program
Version 3.0
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Pitot Heat Failure
• Pitot Heat Failure
– CAS message will be displayed on MFD
– Probe will be displayed in amber on ICE synoptic page
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Windshield Heat Sensor Fault
• Embedded windshield temperature sensor has failed
• Associated temperature display turns red with three dashes
• L (R) WSHLD HEAT FAULT advisory CAS message is displayed
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Engine Anti-ice Failure
• Engine inlet anti-ice failure during flight...
• L (R) ENG A/ICE FAIL caution message appears on MFD
• Note: Previous CAS message will also appear if the system is switched on and the inlet temperature sensor remains cold, indicating no airflow
• Failure indicated on the ice protection synoptic by amber colored engine cowls
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System Review
Flight Operations and Pilot Training Program
Version 3.0
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Review
• What color will be indicated on the MFD ICE Protection synoptic page when a boot has failed?– The boot will appear in yellow
• If engine cowl anti-ice is needed for takeoff, what should the pilot expect?– Reduced takeoff performance due to engine bleed air being used for engine cowl
heating
• How is air data probe/port heat controlled?– Probe/port heat is self-regulated, monitored by ACS
• Are wing boots considered DE-ICE or ANTI-ICE?– DE-ICE