Ship attitude dynamic simulation system for wind tunnel test and working method thereof
A technology of wind tunnel test and dynamic simulation, applied in the field of wind tunnel test, can solve the problems of large influence of experimental results, complex device structure, poor motion simulation effect, etc. , the effect of simple structure
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Embodiment 1
[0050] Such as Figure 7 and 8 As shown, the ship attitude dynamic simulation system used in the wind tunnel test in this embodiment simulates the rolling motion. One lug 10, two lugs 10 are symmetrical with respect to the central axis of the ship model 8, pulleys 4 are installed at both ends of the support rod 5; Pass the pulley 4 on the support bar 5 and be fixed on the slot hole of the other lug 10, and the middle part of the stay cord is fixed on the U groove bearing 72. During the installation process, ensure that the lug 10 slots, the pulley 4 and the turnbuckle 3 are located on the axial symmetry plane of the U-groove bearing 71 .
[0051] According to the maximum angle θ of the rolling motion to be simulated, use the following formula to calculate the distance r between the U-groove bearing 72 and the center hole of the motor turntable 73 1 :
[0052] r 1 =(1 / 2 b+l)×sinθ (1)
[0053] In the formula, b is the width of the bottom of the ship model 8, and l is the d...
Embodiment 2
[0058] Such as Figure 9 As shown, the ship attitude dynamic simulation system used in the wind tunnel test in this embodiment simulates the pitch motion, the center axis of the bottom of the ship model 8 is perpendicular to the center axis of the ship model 8, and an ear piece is installed at the tail of the ship model 8 10. A pulley 4 is installed at one end of the support rod 5 near the afterbody of the ship model 8; A pulley 4 may also be installed on the inner surface of the upper wall plate of the wind tunnel to change the direction of the stay rope.
[0059] According to the maximum angle φ of the pitch motion to be simulated, the distance r between the U-groove bearing 72 and the center hole of the motor turntable 73 is calculated by the following formula 2 :
[0060] r 2 =(1 / 2 c+l)×sinφ
[0061] In the formula, c is the total length of the bottom of the ship model 8, and l is the distance from the bottom edge of the ship model 8 to the slot hole on the lug 10. Af...
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