Are the compressor and power turbines physically connected in the T-6 engine?

In the T-6 engine, the compressor and power turbines are not physically connected. The T-6 uses a turboprop engine design, where the compressor is responsible for compressing the incoming air, while the power turbine extracts energy from the exhaust gases to turn the propeller. The connection between the two is through the engine's internal components—specifically, the airflow and mechanical linkages—rather than a direct physical coupling.

This configuration allows for greater efficiency and flexibility in the engine operation. The separation also supports the ability to optimize the performance of each component independently, which is crucial for achieving the desired thrust while maintaining engine performance across various flight conditions.

While the compressor and power turbine work in tandem to produce thrust, their independent physical structures and operation mechanisms underscore the distinction between their functions in the engine system.