Glossary

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.

Cadmium-plating Can-annular combustion chamber Can-type combustion chamber Cascade axis Cascade front Cascade normal Cascade spacing Case-hardening CBN hardfacing of blade tips Ceramic Coating Ceramics CFRP structures Chemical conversion Chromate treatment of aluminum

Chromate treatment of magnesium Chromic acid anodizing CLEAN Cleaning Columnar crystal Combustion chamber Component efficiency Compressor Control system Cooling air holes Copper-plating Crack inspection Critical Mach No.

Can-type 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.

Can-type combustion chambers are particularly suitable for engines with centrifugal-flow compressors as the airflow is already divided by the compressor outlet diffusors. Each flame tube has its own secondary air duct. The separate flame tubes are all interconnected. Ignition problems may occur, particularly at high altitudes. The entire combustion section consists of 8 to 12 cans that are arranged around the engine. Individual cans are also used combustion chambers for small engines or auxiliary power units. A disadvantage of this design consists in the unfavorable inflow/outflow ratios and the associated large size.

Advantages include

- low development cost
- favorable aerodynamic conditions in the flame tube
- favorable fuel distribution
- good accessibility for servicing.