B-29 Engine Tail
The rear end of the left inboard engine nacelle on a B-29 Superfortress. I don't know what the small hole is for, possibly to facilitate the passage of air through the nacelle or perhaps to drain water. The engines were Wright Cyclone R-3350s and produced up to 3700 horsepower, depending on the model. They were radial engines and air-cooled, which meant that they needed good airflow through the nacelle. Overheating was always a problem, and B-29s were prone to suffering engine fires.
B-29 Engine Tail
The rear end of the left inboard engine nacelle on a B-29 Superfortress. I don't know what the small hole is for, possibly to facilitate the passage of air through the nacelle or perhaps to drain water. The engines were Wright Cyclone R-3350s and produced up to 3700 horsepower, depending on the model. They were radial engines and air-cooled, which meant that they needed good airflow through the nacelle. Overheating was always a problem, and B-29s were prone to suffering engine fires.