Experimental Study on Rapid Pressure Relief in the Cargo Compartment of Civil Aircraft

Abstract

The rapid pressure relief device in the cargo compartment of civil aircraft can avoid the structural damage of aircraft caused by sudden pressure relief in a pressurized compartment. Based on a typical rapid pressure relief device in the cargo hold of civil aircraft, a test bench was built to carry out experimental research on the pressure magnitude and pressure relief process of the device. To simulate the real pressure relief situation of the aircraft pressurized cabin, two experimental studies of forwarding pressure and reverse pressure were carried out, and the pressure relief process of the device was analyzed. The experimental results show that the pressure relief time of the fast pressure relief device is basically the same, and the peak pressure difference of the pressure relief device is within the specified design range of 0.82 ~ 1.62psi. It provides method support for the research and experimental design of the same type of rapid pressure relief device in the cargo hold.