What is the cooling method for the APU generator?

What is the cooling method for the APU generator?

• A. Liquid cooled
• B. Air cooled
• C. Water cooled
• D. Oil cooled

Answer: (B)

Air cooling is used for the APU generator. This means the generator is cooled by ambient air flowing past it, often helped by the APU cooling paths built into the housing. It keeps the generator within acceptable temperatures without the weight, complexity, or potential leaks of a liquid cooling system, which is why it’s chosen for the UH-60A/S APU setup. Liquid or water cooling would require a full coolant loop with radiators and pumps, adding weight and potential leak points that aren’t necessary for the generator’s heat load during normal operation. Oil cooling would involve circulating oil as the coolant, which also adds plumbing and maintenance considerations and isn’t how this APU generator is designed to be cooled.

Air cooling is used for the APU generator. This means the generator is cooled by ambient air flowing past it, often helped by the APU cooling paths built into the housing. It keeps the generator within acceptable temperatures without the weight, complexity, or potential leaks of a liquid cooling system, which is why it’s chosen for the UH-60A/S APU setup.

Liquid or water cooling would require a full coolant loop with radiators and pumps, adding weight and potential leak points that aren’t necessary for the generator’s heat load during normal operation. Oil cooling would involve circulating oil as the coolant, which also adds plumbing and maintenance considerations and isn’t how this APU generator is designed to be cooled.