Abstract: A propulsion unit, and an aircraft, with a propeller and electric motor, including at least one intermediate element interposed between the electric motor and the propeller and configured to transmit at least thrust loads generated by the propeller, a primary structure supporting the propulsion unit, at least one interface having: a first load path, configured to transmit loads perpendicular to the axis of rotation of the propeller, linking the at least one intermediate element to a support linked rigidly to or incorporated in the primary structure, a second load path, configured to transmit loads that are parallel to the axis of rotation of the propeller, linking the at least one intermediate element to a support linked rigidly to or incorporated in the primary structure.

Abstract: A propulsion unit, and an aircraft, with a propeller and electric motor, including at least one intermediate element interposed between the electric motor and the propeller and configured to transmit at least thrust loads generated by the propeller, a primary structure supporting the propulsion unit, at least one interface having: a first load path, configured to transmit loads perpendicular to the axis of rotation of the propeller, linking the at least one intermediate element to a support linked rigidly to or incorporated in the primary structure, a second load path, configured to transmit loads that are parallel to the axis of rotation of the propeller, linking the at least one intermediate element to a support linked rigidly to or incorporated in the primary structure.

Abstract: A method of calibrating stiffness of support structures of an assembly including a main structure and support structures includes modeling the assembly using finite elements, with a theoretical stiffness of the support structures, in moderate support load conditions, calculating calculated reaction forces for each support structure and measuring corresponding measured reaction forces. The stiffness of each support structure is calibrated by determining a calculated stiffness of each support structure based on comparison between the calculated reaction forces and the measured reaction forces. The modeling and simple measurements during an operational phase, in which the support loads are moderate, thus enable the calibration of the stiffness of the support structures. An associated method of modeling the assembly and a corresponding computer program are also disclosed.

Abstract: A method of calibrating stiffness of support structures of an assembly including a main structure and support structures includes modeling the assembly using finite elements, with a theoretical stiffness of the support structures, in moderate support load conditions, calculating calculated reaction forces for each support structure and measuring corresponding measured reaction forces. The stiffness of each support structure is calibrated by determining a calculated stiffness of each support structure based on comparison between the calculated reaction forces and the measured reaction forces. The modeling and simple measurements during an operational phase, in which the support loads are moderate, thus enable the calibration of the stiffness of the support structures. An associated method of modeling the assembly and a corresponding computer program are also disclosed.