Modular cabin blower system for aircraft

A gas turbine engine including:

• an engine core including a compressor, a combustor, and a turbine, the compressor being connected to the turbines through a respective shaft;
• a cabin blower system comprising:
• an electric variator comprising a first electrical machine connected to a first shaft arranged along a first axis, a second electrical machine connected to a second shaft arranged along a second axis, and a power management system;
• a cabin blower comprising a compressor driven by a third shaft arranged along a third axis, the compressor comprising an air inlet and an air outlet;
• and
• a differential gearbox;
• and
• an accessory gearbox arranged within an accessory gearbox casing and adapted to drive the cabin blower system;
• wherein the first and second electrical machines are arranged on a first side of the accessory gearbox casing and the cabin blower is arranged on a second side of the accessory gearbox casing.