Lunar gravity simulation system for lander performance test

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.