Assertion: centrifugal compressor | /r/HasAspect | variable geometry
Facets:
value: probably
type: DEGREE
value: on the first few stages
type: TEMPORAL
value: to make
type: PURPOSE
Source sentences:
text: If the HP compressor pressure ratio exceeds about 4.5:1, then the unit will probably have variable geometry (i.e. variable stators) on the first few stages, to make the surge line on the compressor map more shallow, to accommodate the shallow working line.