Diagonal or mixed-flow compressor
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A diagonal or mixed-flow compressor is effectively a cross between a centrifugal and axial-flow compressor. The American term diagonal-flow is very apt, because these compressors combine both axial and radial velocity components. The prime advantage is the relatively small diameter across the exit diffuser, compared with that of the equivalent centrifugal compressor. A diagonal-flow compressor is featured in the Pratt & Whitney Canada PW610F turbofan, recently certified for the Eclipse 500 Very Light Jet aircraft.
