Linear actuator for a flight control surface

A linear actuator for a flight control surface, comprising:

• first and second electric motors;
• a threaded shaft rotationally driven via the first and second electric motors about a threaded shaft pivot axis, wherein the threaded shaft is operably coupled with the first electric motor via a first gear train and a first planetary gearset, and the threaded shaft is operably coupled with the second electric motor via a second gear train and a second planetary gearset;
• a first threaded nut axially displaced via rotation of the threaded shaft;
• a second threaded nut axially displaced via rotation of the threaded shaft;
• and
• an output shaft operably coupled with the threaded shaft, such that axial displacement of the first and second threaded nuts rotates the output shaft about an output shaft pivot axis that is substantially parallel with the threaded shaft pivot axis.

A linear actuator, comprising:

• at least one electric motor;
• a threaded shaft rotationally driven via the at least one electric motor about a threaded shaft pivot axis;
• at least one threaded nut axially displaced along the threaded shaft pivot axis via rotation of the threaded shaft;
• an output shaft operably coupled to the threaded shaft, such that axial displacement of the at least one threaded nut rotates the output shaft about an output shaft pivot axis that is substantially parallel with the threaded shaft pivot axis;
• a first input coupler pivotably coupled to the at least one threaded nut;
• at least one output coupler pivotably coupled to the output shaft;
• and
• at least one first coupler link pivotably coupled to the first input coupler and the at least one output coupler, wherein the first input coupler is operable to pivot relative to the at least one threaded nut about a pivot axis that is substantially parallel to the threaded shaft pivot axis, the at least one output coupler is operable to pivot relative to the output shaft about a pivot axis that is substantially parallel to the output shaft pivot axis, and the at least one first coupler link is operable to pivot relative to the first input coupler about a pivot axis that is substantially perpendicular to the threaded shaft pivot axis and pivot relative to the at least one output coupler about a pivot axis that is substantially perpendicular to the output shaft pivot axis.