초록 ▼

Movable surface planes include opposed independently movable endless surfaces over the majority of opposite sides of the planes. By moving one surface in the same direction as the fluid flow about the plane, and the opposite surface in a direction opposite the fluid flow, the flow is accelerated acr

Movable surface planes include opposed independently movable endless surfaces over the majority of opposite sides of the planes. By moving one surface in the same direction as the fluid flow about the plane, and the opposite surface in a direction opposite the fluid flow, the flow is accelerated across the surface moving in the same direction to produce a lesser pressure, and retarded across the surface moving in the opposite direction to produce a greater pressure. The net result is a force urging the plane toward the surface moving in the direction of ambient fluid flow. The two surfaces of the present invention may be operated independently of one another, to move in the same or opposite directions and to have the same or different velocities. The movable surfaces are porous and communicate with ductwork within the structure, to provide fluid flow through the surfaces for boundary layer control.

대표청구항 ▼

Movable surface planes include opposed independently movable endless surfaces over the majority of opposite sides of the planes. By moving one surface in the same direction as the fluid flow about the plane, and the opposite surface in a direction opposite the fluid flow, the flow is accelerated acr

Movable surface planes include opposed independently movable endless surfaces over the majority of opposite sides of the planes. By moving one surface in the same direction as the fluid flow about the plane, and the opposite surface in a direction opposite the fluid flow, the flow is accelerated across the surface moving in the same direction to produce a lesser pressure, and retarded across the surface moving in the opposite direction to produce a greater pressure. The net result is a force urging the plane toward the surface moving in the direction of ambient fluid flow. The two surfaces of the present invention may be operated independently of one another, to move in the same or opposite directions and to have the same or different velocities. The movable surfaces are porous and communicate with ductwork within the structure, to provide fluid flow through the surfaces for boundary layer control. to the disturbance compensating signal calculator, which, in turn, generates and outputs a new disturbance compensating signal at a predetermined timing. 6. A maneuver device for an artificial satellite comprising: a feed forward torque instruction signal generator for outputting feed forward torque instruction signals as a profile of torque to be applied to the artificial satellite according to a maneuver plan; an angular velocity detector for detecting and outputting an angular velocity of the artificial satellite as a detected angular velocity signal; a disturbance compensating signal calculator to which the feed forward torque instruction signal and the detected angular velocity signal are input, and which, in turn, outputs a disturbance compensating signal for compensating for disturbance torque applied to the artificial satellite during maneuver; and a reaction wheel for generating control torque for driving the artificial satellite based on the disturbance compensating signal and the feed forward torque instruction signal. 7. A maneuver device for an artificial satellite comprising: a feed forward torque instruction signal generator for outputting feed forward torque instruction signals as a profile of torque to be applied to the artificial satellite according to a maneuver plan; a target attitude angle value generator for generating and outputting a target value of an attitude angle of the artificial satellite as a target attitude angle signal; a target angular velocity value generator for generating and outputting a target value of an angular velocity of the artificial satellite as a target angular velocity signal; an attitude angle detector for detecting and outputting an attitude angle of the artificial satellite as a detected attitude angle signal; an angular velocity detector for detecting and outputting an angular velocity of the artificial satellite as a detected angular velocity signal; an attitude control signal calculator to which an attitude angle error signal as a difference signal between the target attitude angle signal and the detected attitude angle signal as well as an angular velocity error signal as a difference signal between the target angular velocity signal and the detected angular velocity signal are input, and which, in turn, outputs an attitude control signal; a disturbance compensating signal calculator to which the feed forward torque instruction signal and the detected angular velocity signal are input, and which, in turn, outputs a disturbance compensating signal for compensating for disturbance torque applied to the artificial satellite during maneuver; and a reaction wheel for generating control torque fo