Performance Analysis of Turbine-Powered Air Circulation System

In order to reduce the consumption of engine bleed air in the airborne air circulation and improve the air supply quality of the cockpit, a TP-CACS/CIAS system architecture is proposed. Based on the performance calculation method of a typical booster air circulation system, combined with the shaft power difference provided by different bleed air methods, the engine bleed air consumption corresponding to different system architectures can be obtained, and the system cycle pressure, flight parameters and changes in electronic cabin heat load can be further analyzed. Influence on the performance of TP-ACS/HPWS, PTMS-ACS/HPWS and TP-CACS/CIAS system architecture. The output shaft power of the power turbine can be adaptively adjusted according to the heat load of the air circulation system. In a typical flight profile, the checkpoints are selected to check and analyze the performance of the three system frameworks. The calculation results indicate that the TP-CACS/CIAS system always has the smallest engine bleed consumption within the flight profile, reducing engine bleed consumption by 31.4% compared to the PTMS-ACS/HPWS system and 28.4% compared to the TP-ACS/HPWS system. This research provides system framework ideas and theoretical support for the design of new aircraft air circulation systems.