Abstract :
The propeller is the main part of the aircraft drive that needs to be considered
in terms of its characteristics. Aircraft have different characteristics, so propeller
selection is very important to maximize the performance of the aircraft. Therefore,
it is necessary to test the performance of the propeller to determine the
characteristics of the propeller. This study aims to determine the effect of advance
ratio on the coefficient and efficiency comparison between two propellers with
different blade tip shapes using the computational fluid dynamics method. This
study uses propeller rotary variations of 2100, 2250, 2400, 2550, and 2700 rpm,
with variations in free airflow velocity of 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55,
and 60 m/s. The propeller is modeled using Solidworks software and simulated
using Ansys fluent software. The results showed that the advance ratio affects the
thrust coefficient, torque coefficient, and power coefficient produced by the
propeller. At a low advance ratio, the coefficient produced is large, and at a high
advance ratio, the coefficient produced decreases. The comparison of efficiency
shows, at a low advance ratio propeller-2 is more efficient than propeller-1, and at
a high advance ratio propeller-1 is more efficient than propeller-2 with a peak
efficiency of 73.91% and 71.78% on propeller-2.