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What are transonic airfoils, and what is the active clearance control? Check out our technical dictionary and find out more about engine technology terms – from active clearance control to velocity triangle. Active clearance control (ACC) Adaptive HSC milling Afterburner Airfoil bitangent line Airfoil chord Aluminizing and chromizing Aluminum oxide dry blasting Aluminum oxide wet blasting Annular combustion chamber Anodizing Atmospheric plasma spraying (APS) ATFI Axial-flow compressorAnnular combustion chamber
Combustion chambers must be designed to ensure stable combustion of the fuel injected and optimum fuel utilization within the limited space available and over a large range of air/fuel ratios. The combustion chamber design depends on the application and requirements in each case.Annular combustion chambers are suitable for engines with axial-flow compressors and low airflow rates. The flame tube and both secondary air ducts are annular. Annular combustion chambers are characterized by low pressure losses, small size and good ignition behavior. Maintenance and inspection, however, are difficult. Annular combustion chambers are open at the front to the compressor and at the rear to the turbine and relatively short.
They are mainly used in gas turbine engines. The development expenditure for an annular combustion chamber is high and calculations are more complicated than with a can-type combustion chamber since the flow is no longer two-dimensional.