Research on Air-cooling Effectiveness for the Battery of Electric High-speed Unmanned Helicopter
Electric unmanned helicopter need better heat dissipation on account of high battery power and small internal space.The objective of this paper is to optimize heat dissipation performance.CFD was used to calculate the air intake and flow characteristics of various air inlet in the infinite flow field.Based on the above results,the surface heat dissipation performance and the cabin flow field in forward flight and hovering were calculated,and the variation of surface heat dissipation performance with the deflection angle of air inlet flow was analyzed.Under the combined action of the cabin airflow velocity and turbulence,the heat dissipation performance of the battery pack in upper and lower equipment compartment presents different rules.Based on the calculation,the surface heat dissipation performance is the strongest when the deflection angle of upper air inlet flow is 20°and the deflection angle of lower air inlet flow is 80°.
electric high-speedunmanned helicopterCFDbatteryheat dissipation performance
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