Which turbine engine compressor is recognized for its advantages in starting flexibility and high-altitude operation?

The split-spool, axial-flow compressor is notable for its design that enhances starting flexibility and high-altitude performance. This type of compressor consists of two separate spools that can operate at different speeds, allowing for a wider range of operational efficiency. At lower speeds, the front spool can maintain good airflow, ensuring effective starting under various conditions, while the rear spool can achieve higher speeds that optimize performance during cruising at altitude.

This design facilitates improved airflow management throughout the compressor stages, which helps maintain stability and efficiency across a range of operating conditions. At high altitudes, the capability of the split-spool compressor to operate efficiently helps prevent issues like compressor stall, allowing for consistent engine performance despite the thin air at higher elevations.