Radar Liquid Cooling System

Radar Liquid Cooling System

Remove heat from the Radar Transmitter and maintain temperature within operating limits

Liquid to Air Heat Exchanger

Extracts heat from liquid coolant

Temperature Control Valve

Controls coolant flow through the Liquid to Air Heat Exchanger to maintain a minimum coolant temperature level

Centrifugal Pump Unit

Self-priming, submerged, centrifugal pump with a cylindrical 2-section reservoir that circulates liquid coolant through the system

Ram Air Scoop/Actuator

• Mechanical mechanism that extends out of the left Leading Edge Extension (LEX) and provides cooling air to the Liquid to Air Heat Exchanger

• Actuator is driven by an electric motor and opens and closes the Ram Air Scoop

• Actuator closes with weight on wheels or with an input from the ADC when ram air is hot

Fluid Pressure Filter

Filters coolant before it passes through the Radar Transmitter

Low Pressure Sensor

Loss of preset pressure will cause loss of ground and cause Weapon System Fail Code Display

High Temperature Warning Sensor

Temperature above preset limits will cause loss of ground and cause WPN SYS FAIL Code display

Liquid Coolant Temperature Sensor

Provides temperature readings to the ACS Temp/Flow Controller

Airflow Valve

Pneumatically modulated to limit, as necessary, conditioned air to the Liquid to Air Heat Exchanger

Servicing Panel

• Located in the left forward fuselage

• Provides indication of fluid quantity

• Has 2 switches

  • RLCS Pump Unit

  • RLCS Ram Air Scoop Actuator/Ground Cooling Fan