31. For this reason there is seldom a reason to illustrate centrifugal compressor performance below 60 % efficiency. 32. The turbojet collection has some early centrifugal compressor designs such as the de Havilland Goblin and Derwent. 33. Owing to stressing considerations, the centrifugal compressor is throttled-back aerodynamically to a lower HPC pressure ratio than the-1. 34. To start this list two of the most well-known centrifugal compressor applications are listed; gas turbines and turbochargers. 35. In many modern high-efficiency centrifugal compressors the gas exiting the impeller is traveling near the speed of sound. 36. Historically, centrifugal compressors applied to industrial applications were needed to achieve performance at a specific flow and pressure. 37. The power needed to spin the centrifugal compressor is derived from the kinetic energy of the engine's exhaust gases. 38. Centrifugal compressors are used in small gas turbine engines or as the final compression stage of medium-sized gas turbines.39. There are three basic categories of gas turbine engine compressor : axial compressor, centrifugal compressor and mixed flow compressor. 40. The most expedient engine choice for the P-80 thus became the Allison J33, based on British centrifugal compressor designs.
