Airborne centrifugal refrigerating compressor design and characteristic analysis

A key technique which is critical to design vapor cycle system (VCS) of the new-generation high-performance fighter aircraft is to develop a super-mini compressor with 50 kW cooling capacity. Due to the small air rate flowing through the mini compressor, the designing experience which was used for the massive flow-rate compressor mostly cannot be completely applied to the designing and prediction for the super mini centrifugal refrigeration compressor. In line with the experimental data, design scheme was proposed. The expressions to picture the characteristics of the compressor, such as efficiency and compression ratio, were developed. The analytical calculation results are approximation to the experimental measurements. All aforementioned studies can supply necessary technical support to the design, research and development of refrigeration compressor in VCS adopted in high-performance fighter aircrafts.