Study on the influence of tethered balloon structural parameters on steady-state response
Insufficient research has been conducted on the influence of structural parameters of a tethered balloon system on its stable response.Using CFD methods,steady-state aerodynamic coefficients acting on the center of gravity of the tethered balloon due to external stable flow fields were calculated.A"spring-particle"model has been used to mathematically model the cable and establish the steady equilibrium equation of the tethered balloon system which has been solved by a given method that has been confirmed by experimentation.Analyzing various parameters such as load center of gravity position,initial pitch angle of the balloon,and location of the main suspension point,we have determined the rule for the effect of these parameters on the stable response of the tethered balloon system.We have found that the ideal stable response of the tethered balloon in a wind field occurs when the pitch angle remains constant or slightly decreases with increasing wind speed and based on this,we propose new requirements for designing the aerodynamic characteristics of the balloon:optimizing the shape of the ball to achieve an increased lift-drag ratio while minimizing aerodynamic force coefficients.
tethered balloonsteady-state responsepunily posecentre of gravity of loadnumeri-cal simulation
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