Stability and control augmentation system
AssigneeGoodrich Actuation Systems Limited
InventorsArnauld R. E. Hervieux, Gregory Y. Meignat
Life of this patent
Estimating the term…
Abstract
A Stability and Command Augmentation System (SCAS) for an aircraft, the SCAS including, a first input shaft providing a first rotational input; a second input shaft providing a second rotational input; and a device for summing the first and second rotational inputs to give a rotational output for controlling an actuator. A method of operating a SCAS on an aircraft, the method including providing a pilot input order in the form of a rotating first shaft, providing an augmentation input order in the form of a rotating second shaft, summing the rotation of the pilot input order and the augmentation input order to give an output order; and using the output order to control an actuator.
Claims9
A Stability and Command Augmentation System (SCAS) for an aircraft, the SCAS comprising:
- a first input shaft providing a first rotational input;
- a second input shaft providing a second rotational input;
- a device for summing the first and second rotational inputs to give a rotational output for controlling an actuator, wherein the device comprises a planetary gear assembly comprising a ring gear, a sun gear and a plurality of planet gears, wherein each planet gear is driveably connected to both the ring gear and the sun gear;
- a housing surrounding at least a portion of the planetary gear assembly;
- and
- a centering mechanism for biasing the planetary gear assembly towards a predetermined position in relation to the housing, wherein the centering mechanism comprises a tension spring positioned between the ring gear and the housing.
Dependencies are inferred from the claim text.