J1030206 Fundamental Study of Counter-Rotating Axial Fan for Aircrafts

Abstract

The design and test of a 10-kW, battery-powered counter-rotating fan is presented in this paper. DC brushless motors are driven by 8 packs of 4000 mAh 7S LiPo batteries which supply 160 A of discharge current and 58 V of voltage. Designed fan diameter is 144 mm and the nominal rotation frequency is 42000/40000 rpm for the forward/aft fan. The experiment was carried out at the frequency of 20000 rpm. The pressure ratio of 1.07 and the efficiency of 0.5 were measured.