Which component provides cooling for engine oil via a liquid-to-liquid cooling method?

Which component provides cooling for engine oil via a liquid-to-liquid cooling method?

• A. PAS
• B. Main Fuel Manifold
• C. Liquid to Liquid Cooler
• D. Fuel Filter

Answer: (C)

The question tests how engine oil is cooled in the UH-60 by a liquid-to-liquid heat transfer path. In this setup, engine oil flows through a cooler that sits in the oil cooling loop and is surrounded by engine coolant. Heat moves from the hotter oil into the cooler’s surrounding liquid coolant, which then carries that heat away to be dissipated elsewhere, often at a radiator or another heat exchanger. This method uses two liquids, with heat transfer occurring directly between them, rather than involving air. The component that provides this function is the Liquid to Liquid Cooler. It is specifically designed to remove heat from the engine oil by exchanging heat with the coolant circulating in the engine’s cooling system, keeping the oil within acceptable temperatures for lubrication. Other options don’t perform this cooling role: the PAS is a control-system component for flight controls, the Main Fuel Manifold distributes fuel, and the Fuel Filter cleans fuel.

The question tests how engine oil is cooled in the UH-60 by a liquid-to-liquid heat transfer path. In this setup, engine oil flows through a cooler that sits in the oil cooling loop and is surrounded by engine coolant. Heat moves from the hotter oil into the cooler’s surrounding liquid coolant, which then carries that heat away to be dissipated elsewhere, often at a radiator or another heat exchanger. This method uses two liquids, with heat transfer occurring directly between them, rather than involving air.

The component that provides this function is the Liquid to Liquid Cooler. It is specifically designed to remove heat from the engine oil by exchanging heat with the coolant circulating in the engine’s cooling system, keeping the oil within acceptable temperatures for lubrication.

Other options don’t perform this cooling role: the PAS is a control-system component for flight controls, the Main Fuel Manifold distributes fuel, and the Fuel Filter cleans fuel.