During Redundant Independent Mechanical Starting System (RIMSS) operation, air and fuel are mixed and ignited in what section?

During Redundant Independent Mechanical Starting System (RIMSS) operation, air and fuel are mixed and ignited in what section?

• A. Starter section
• B. Combustion section
• C. Turbine section
• D. Compressor section

Answer: (B)

During RIMSS operation, the air supplied for starting is mixed with fuel and burned in the combustion section. This area, the burner or combustor, is where the chemical energy of the fuel is converted into high-temperature, high-pressure gas that then expands through the turbine. The other sections have different roles: the starter section houses the starting hardware, the compressor section pressurizes the incoming air, and the turbine section uses the hot gases to drive the turbine after combustion. So the mixing and ignition of air and fuel take place in the combustion section.

During RIMSS operation, the air supplied for starting is mixed with fuel and burned in the combustion section. This area, the burner or combustor, is where the chemical energy of the fuel is converted into high-temperature, high-pressure gas that then expands through the turbine. The other sections have different roles: the starter section houses the starting hardware, the compressor section pressurizes the incoming air, and the turbine section uses the hot gases to drive the turbine after combustion. So the mixing and ignition of air and fuel take place in the combustion section.