What type of compressor rotor structure does the GTM feature?

The GTM, or Gas Turbine Module, typically features a spool/disk structure with circumferential dovetails, which is a critical design element in modern gas turbine technology. This design allows for efficient power transfer and stability during operation.

The spool/disk structure consists of multiple discs that are mounted on a common shaft, known as a spool, which enables the compressor and turbine stages to operate together effectively. The circumferential dovetails are used to join the rotor blades to the disks securely. This design not only enhances the mechanical integrity of the assembly but also helps in optimizing airflow and maintaining aerodynamic efficiency through the compressor stages.

The design reflects the need for a balance between strength, weight, and performance. This structure is essential for managing the high speeds and temperatures that occur within the gas turbine, allowing it to operate efficiently at varying loads. The ability to precisely manufacture these dovetail fittings ensures that the blades are held securely in place, which is vital for safe and reliable gas turbine operation.