Back to results
US 11,313,391 B2Granted
Actuator system for a fly-by-wire aircraft
AssigneeSikorsky Aircraft Corporation
InventorDavid Anthony DeFusco
Life of this patent
Estimating the term…
Abstract
An actuator system for an aircraft includes an actuator, and a control valve system operatively connected to the actuator. The control valve system includes a first direct drive valve (DDV) mechanically connected to a second DDV. A backup valve system is operatively connected to the actuator. The backup valve system includes one of an electro-hydraulic servovalve (EHSV) and a DDV.
Claims19
An actuator system for an aircraft comprising:
- an actuator including a plurality of hydraulic members;
- a control valve system operatively connected to more than one of the plurality of hydraulic members of the actuator, the control valve system including a first direct drive valve (DDV) mechanically connected to a second DDV;
- and
- a backup valve system operatively connected to an other of the plurality of hydraulic members the actuator, the backup valve system including one of an electro-hydraulic servovalve (EHSV) and a DDV, wherein the backup valve system is mechanically isolated from the control valve system.
1 more element
An aircraft comprising:
- a fuselage;
- at least one control member supported at the fuselage;
- and
- an actuator system operatively connected to the at least one control member, the actuator system comprising:
- an actuator having a plurality of hydraulic members;
- a control valve system operatively connected to more than one of the plurality of hydraulic members of the actuator, the control valve system including a first direct drive valve (DDV) mechanically connected to a second DDV;
- and
- a backup valve system operatively connected to an other of the plurality of hydraulic members of the actuator, the backup valve system including one of an electro-hydraulic servovalve (EHSV) and a DDV, wherein the backup valve system is mechanically isolated from the control valve system.
5 more elements
Dependencies are inferred from the claim text.