Pseudo-Transient Simulation Analysis of Heat Flow Coupling of Oil Injection Lubrication in Nacelle of Tilt-Rotor Aircraft

In order to study the comprehensive lubrication effect of the oil injection lubrication system for a tilt-rotor helicopter’s nacelle under different inclination angles, a calculation model of the nacelle was established using the CFD method. Considering the effects of oil reflux and cooling, the nacelle lubrication was analyzed. Through heat flow coupling simulation, a series of heat flow field distributions within the nacelle during the tipping process were obtained. The results indicate that the tilt angle has a significant effect on the performance of the oil injection lubrication system.