Aircraft air system with boost compressor(s)

A system for an aircraft powerplant, comprising:

• a turbine engine including a core flowpath, a first rotating structure, a compressor section, a combustor section and a turbine section, the core flowpath extending through the compressor section, the combustor section and the turbine section from an airflow inlet into the core flowpath to a combustion products exhaust from the core flowpath, and the first rotating structure comprising a first bladed rotor arranged along the core flowpath in the compressor section or the turbine section;
• and
• an accessory system including a first electromechanical apparatus, an air circuit and an air device, the first electromechanical apparatus including a first electric machine and a first boost compressor, the first electric machine comprising a first electric machine rotor that is operatively coupled to the first rotating structure, the first boost compressor comprising a first boost compressor rotor that is operatively coupled to the first electric machine rotor and the first rotating structure, and the air circuit configured to direct air received from an air source, through the first boost compressor, to the air device;
• wherein the turbine engine further includes a second rotating structure, and the second rotating structure comprises a second bladed rotor arranged along the core flowpath in the compressor section or the turbine section;
• wherein the accessory system further includes a second electromechanical apparatus, the second electromechanical apparatus includes a second electric machine and a second boost compressor, the second electric machine comprises a second electric machine rotor that is operatively coupled to the second rotating structure, and the second boost compressor comprises a second boost compressor rotor that is operatively coupled to the second electric machine rotor and the second rotating structure;
• and
• wherein the air circuit is configured to further direct the air received from the air source, through the second boost compressor, to the air device.

A system for an aircraft powerplant, comprising:

• a turbine engine including a core flowpath, a first rotating structure, a compressor section, a combustor section and a turbine section, the core flowpath extending through the compressor section, the combustor section and the turbine section from an airflow inlet into the core flowpath to a combustion products exhaust from the core flowpath, and the first rotating structure comprising a first bladed rotor arranged along the core flowpath in the compressor section or the turbine section;
• and
• an accessory system including a first electromechanical apparatus, an air circuit and an air device, the first electromechanical apparatus including a first electric machine and a first boost compressor, the first electric machine comprising a first electric machine rotor that is operatively coupled to the first rotating structure, the first boost compressor comprising a first boost compressor rotor that is operatively coupled to the first electric machine rotor and the first rotating structure, and the air circuit configured to direct air received from an air source, through the first boost compressor, to the air device;
• wherein the turbine engine further includes a second rotating structure, and the second rotating structure comprises a second bladed rotor arranged along the core flowpath in the compressor section or the turbine section;
• wherein the accessory system further includes a second electromechanical apparatus, the second electromechanical apparatus includes a second electric machine and a second boost compressor, the second electric machine comprises a second electric machine rotor that is operatively coupled to the second rotating structure, and the second boost compressor comprises a second boost compressor rotor that is operatively coupled to the second electric machine rotor and the second rotating structure;
• and
• wherein the air circuit is configured to further direct the air received from the air source, through the second boost compressor, to a second air device.