In a can-annular combustion chamber, how are the individual chambers arranged?

• A. Individual chambers are placed side by side to form circle of cans inside a single casing
• B. They are arranged in a straight line along the engine axis
• C. They are stacked vertically in multiple rings
• D. They are integrated into a single large chamber

Answer: (A)

In a can-annular combustion chamber, individual combustors, or cans, are placed side by side to form a circular ring inside a single outer casing. Each can contains its own liner, fuel injector, and burner, and the ring arrangement around the engine axis allows the combustion gases from all cans to combine and flow into the turbine through a common outlet. This circular layout—the annulus of cans—provides compactness, uniform flow around the circumference, and easy maintenance since individual cans can be removed or replaced without disturbing the entire chamber.

That’s why this arrangement fits can-annular design. A straight line along the axis wouldn’t create a ring, vertical stacking in multiple rings would separate the cans into multiple tiers rather than a single circular annulus, and a single large chamber would lack the individual, replaceable cans that define the can-annular concept.