A turbofan engine comprising: a fan section including a fan hub including a hub diameter supporting a plurality of fan blades including a tip diameter ; a compressor section ; a combustor receiving airflow from the compressor section and generating a high-energy flow; and a turbine section driven by the high-energy flow; and a geared architecture driven by the turbine section for rotating the fan hub at a speed different than the turbine section , characterised in that : the geared architecture includes a gear volume between 526 in 3 (8,169.6 cm 3 ) and 790 in 3 (12,945.8 cm 3 ) and an axial length between 3.03 inches (7.70 cm) and 4.60 inches (11.68 cm); a ratio of the hub diameter to the tip diameter is between 0.24 and 0.36, wherein the hub diameter is between 16.0 in (40.6 cm) and 19.5 in (49.5 cm); and the turbofan engine includes a compressor entrance passage disposed around the geared architecture including an inlet disposed at an inlet diameter and an outlet to the compressor section disposed at an outlet diameter , wherein a ratio of the inlet diameter to the outlet diameter is between 1.22 and 1.82, the inlet diameter is between 20.6 in (52.3 cm) and 25.3 in (64.2 cm) and the outlet diameter is between 13.8 in (35.0 cm) and 16.8 in (42.6 cm). a fan section including a fan hub including a hub diameter supporting a plurality of fan blades including a tip diameter ; a compressor section ; a combustor receiving airflow from the compressor section and generating a high-energy flow; and a turbine section driven by the high-energy flow; and a geared architecture driven by the turbine section for rotating the fan hub at a speed different than the turbine section , characterised in that : the geared architecture includes a gear volume between 526 in 3 (8,169.6 cm 3 ) and 790 in 3 (12,945.8 cm 3 ) and an axial length between 3.03 inches (7.70 cm) and 4.60 inches (11.68 cm); a ratio of the hub diameter to the tip diameter is between 0.24 and 0.36, wherein the hub diameter is between 16.0 in (40.6 cm) and 19.5 in (49.5 cm); and the turbofan engine includes a compressor entrance passage disposed around the geared architecture including an inlet disposed at an inlet diameter and an outlet to the compressor section disposed at an outlet diameter , wherein a ratio of the inlet diameter to the outlet diameter is between 1.22 and 1.82, the inlet diameter is between 20.6 in (52.3 cm) and 25.3 in (64.2 cm) and the outlet diameter is between 13.8 in (35.0 cm) and 16.8 in (42.6 cm). the geared architecture includes a gear volume between 526 in 3 (8,169.6 cm 3 ) and 790 in 3 (12,945.8 cm 3 ) and an axial length between 3.03 inches (7.70 cm) and 4.60 inches (11.68 cm); a ratio of the hub diameter to the tip diameter is between 0.24 and 0.36, wherein the hub diameter is between 16.0 in (40.6 cm) and 19.5 in (49.5 cm); and the turbofan engine includes a compressor entrance passage disposed around the geared architecture including an inlet disposed at an inlet diameter and an outlet to the compressor section disposed at an outlet diameter , wherein a ratio of the inlet diameter to the outlet diameter is between 1.22 and 1.82, the inlet diameter is between 20.6 in (52.3 cm) and 25.3 in (64.2 cm) and the outlet diameter is between 13.8 in (35.0 cm) and 16.8 in (42.6 cm). <EOS>