The leeward wind tunnel has a 6-component wire balance above a moving belt ground plane,The moving belt plane is 2.0m width x 6m length and moves at the maximum speed of 220km/h to simulate the air flow near the ground when a train runs.
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The suspension wire type balance uses normal steel wires or piano wires, four for lift, four for Side force and two for drag, to suspend the model via load cells and jacks above the ground plane installed with a boundary layer suction system and they make it possible to measure aerodynamic force that works on the model.
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