Aerodynamic Characteristics Test for Two Kinds of Propeller with Different Blade Angle

Abstract

This paper introduces the wind tunnel tests and test results of two kinds of propeller with different blade angle. The 3D test section of NF-3 wind-tunnel of Northwestern Polytechnical University is used to perform the wind-tunnel test. In the test, wind speed are 0m/s, 20m/s, 30m/s and 40m/s, propeller speed are 900, 1200, 1500, 1800, 2100, 2400, 2700, 3000, 3300, 3600, 3900(r/min). The wind tunnel test results show that when the two propellers with the same airfoil and the chord length distribution along radial direction, different blade angle distribution along radial direction, the thrust, torque, power and efficiency have a significant difference. The propeller with more blade angle has more thrust and power, the propeller with more blade angle is suitable for high advanced ratio, the propeller with less blade angle is suitable for low advanced ratio.