The main gas compressor discharge pressure will depend upon the distance to the raw natural gas processing plant and it may require that a multi-stage compressor be used.
22.
Overall the engine had a five-stage compressor providing air at a compression ratio of 3 : 1 to ten flame cans, which powered a single-stage turbine.
23.
The resulting "'Betty "'design consisted of a nine-stage compressor 1 ?feet in diameter attached through a coupling to a four-stage turbine.
24.
One of the few changes was the fitting of the Piaggio P . VII RC . 35 engine, that had a single-stage compressor which gave 500 hp at low level.
25.
Production engines abandoned this first stage compressor in favour of a better designed diffuser passage which recovered the mass flow, at the cost of dropping the pressure ratio to 5.35.
26.
Latest variants, the and, were derived from the CFM56 engine family, and have a radically different HP spool, comprising a 9-stage compressor driven by a single stage turbine.
27.
The T38-A-1 power sections each contained 17-stage compressors giving a pressure ratio of 6.3 : 1, eight combustion chambers, and four-stage turbines.
28.
The W501G was touted to be a new machine, with an advanced 17 stage compressor design achieving a 19 : 1 pressure ratio ( vs . 15 : 1 for the W501F ).
29.
Unlike the fan, the five-stage compressor differs between the F3 and the XF3-400, with the advanced XF3-400 benefiting from 3D computational fluid dynamics ( CFD ) improvements.
30.
In the past, aircraft engines would run turbochargers in stages, where the first stage compressor would feed the inlet of the second stage compressor that would further compress the air before it enters the engine.
