RTX Collins Aerospace EPACS power, cooling system completes altitude testing

• RTX reported successful altitude testing of Collins Aerospace’ Enhanced Power and Cooling System for the F-35’s next-generation power and thermal management.
• Testing validated performance in flight-like conditions, including operation at mission-level power for several days across multiple altitudes.
• EPACS targets higher cooling capacity to support planned F-35 technology upgrades, aiming to preserve performance margins over the aircraft’s lifecycle.
• Milestone follows a 2025 determination that EPACS met requirements for aircraft integration.

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