The control arrangement may be, for example, a valve controlling a by pass flow of the combustion air and {TAIL ~ inlet guide vanes} of {HEAD ~ the compressor} 
The control arrangement may be , for example , a valve controlling a by pass flow of the combustion air and { TAIL ~ inlet guide vanes } of { HEAD ~ the compressor }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD