Gas turbine engine with low pressure compressor stages

A method of operating a compressor of a gas turbine engine, comprising:

• drawing air into a core of the gas turbine engine from an air inlet and through axially spaced-apart low pressure compressor stages, and then through a high pressure compressor section to provide pressurized air;
• and
• while drawing air into the core:
• varying a flow of the air through a fluid conduit junction upstream of the low pressure compressor stages, wherein the fluid conduit junction is provided between a first fluid conduit segment and a second conduit segment of a fluid conduit, the first fluid conduit segment extending between the air inlet and one of the low pressure compressor stages, the second fluid conduit segment extending between the air inlet and another one of the low pressure compress stages, the fluid conduit having a flow diverter positioned at the fluid conduit junction, and wherein varying the flow of the air comprises displacing the flow diverter between a first position to direct air from the fluid conduit junction to both the first and second fluid conduit segments, and a second position closing the fluid conduit junction to direct air from the fluid conduit junction only to the first fluid conduit segment;
• and
• varying an increase in pressure of the air across the low pressure compressor stages.

A low pressure compressor section of a gas turbine engine, comprising:

• low pressure compressor stages spaced apart along an axis of rotation of the low pressure compressor section, the low pressure compressor section having:
• a fluid conduit extending between an air inlet of the gas turbine engine and the low pressure compressor stages, the fluid conduit having at least one flow diverter displaceable between a first position and a second position to modulate air flow through the low pressure compressor stages, the fluid conduit including a first fluid conduit segment extending between the air inlet and one of the low pressure compressor stages, and a second fluid conduit segment extending between the air inlet and another one of the low pressure compressor stages, the first and second fluid conduit segments meeting at a fluid conduit junction upstream of the low pressure compressor stages, the at least one flow diverter positioned at the fluid conduit junction and displaceable between the first position to direct air from the fluid conduit junction to both the first and second fluid conduit segments, and the second position closing the fluid conduit junction to direct air from the fluid conduit junction only to the first fluid conduit segment;
• and
• a compressor stage disabler drivingly engaged with at least one of the low pressure compressor stages and configured to reduce a rotation thereof.