Lunar gravity simulation system for lander performance test
The disclosure relates to a lunar gravity simulation system for a lander performance test including a plurality of first frames extending in a height direction, a plurality of second frames extending in a horizontal direction, a plurality of third frames extending in a vertical direction, a plurality of movable frames connecting one of the plurality of third frames to another third frame, a plurality of movable bridges mounted on the movable frame and movable along the movable frame in the horizontal direction, a lander holder comprising three or more third frames, wherein the plurality of movable frames and the plurality of movable bridges are arranged between the plurality of third frames and the plurality of movable bridges are simultaneously connected to the lander holder; a connection wire connecting the lander holder to the movable bridge, and a lander connected to the lander holder.
1 . A lunar gravity simulation system for a lander performance test comprising:
a plurality of first frames extending in a height direction;
a plurality of second frames extending in a first horizontal direction;
three or more third frames extending in a second horizontal direction perpendicular to the first horizontal direction;
a plurality of movable frames extending in the first horizontal direction, each connecting one of the three or more third frames to another third frame, wherein the movable frames are movable in the second horizontal direction along the third frames;
a plurality of movable bridges mounted on the plurality of movable frames and movable along the movable frames in the first horizontal direction;
wherein each of the plurality of movable bridges is arranged between respective third frames of the three or more third frames,
a lander holder connected simultaneously to the plurality of the movable bridges a plurality of connection wires connecting the lander holder to the plurality of movable bridges; and
a lander connected to the lander holder;
wherein each movable bridge comprises
a first motor configured to apply force to its respective connection wire,
a second motor configured to move the movable bridge along its respective movable frame, and
a third motor configured to move its respective movable frame along two of the third frames; and
a controller configured to control an operation of each first motor, each second motor, and each third motor,
wherein the controller is further configured to control the operation of each third motor to move at least two of the plurality of movable bridges along the three or more third frames at a same speed.
2 . The lunar gravity simulation system of claim 1 , wherein each connection wire is connected to a respective load cell and a respective angle sensor.
3 . The lunar gravity simulation system of claim 1 , wherein the lander holder has an arc shape or a semicircle shape.
4 . The lunar gravity simulation system of claim 1 , further comprising a suspension wire connecting the lander holder to the lander.
5 . The lunar gravity simulation system of claim 4 , wherein a gimbal is included in the suspension wire.
6 . The lunar gravity simulation system of claim 1 wherein
a camera is included in the lander, and
the controller is configured to receive image data from the camera and control the operation of the second motors and the third motors according to the image data to move the movable bridges.
7 . The lunar gravity simulation system of claim 1 , wherein
the plurality of movable bridges are arranged on a same first line and are moved at a same speed through the third motors, and
the first line extends in the first horizontal direction.