TM 55-2840-254-23
E
CENTRIFUGAL IMPELLER. Physically part of compressor rotor assembly. Designed to further
compress and direct air through air diffuser assembly.
F
AlR DIFFUSER. Provides path for compressed air between centrifugal impeller and combustion
chamber. Contains straightening vanes inside that remove air swirl created by the
centrifugal impeller.
INTERSTAGE AIR-BLEED ACTUATOR. Pneumatic device that controls compressor air-bleed by
G
tightening and loosening metal band over vent holes in compressor housing. Re-
ceives input signal from fuel control.
H
COMPRESSOR BLEED BAND. Metal band located around vent holes toward rear of compressor
housing. By tightening and loosening bleed band, a regulated amount of air can be
bled from compressor. This allows more rapid acceleration without surge. Con-
trol led by interstage air-bleed actuator.
AIR GALLERY COVER. Fits around aft end of compressor housing. Holes in compressor housing
I
allow heated air to flow into air gallery cover. Port is provided in cover for custo-
mer use of this air.
1-16
