Decompression Load Analysis of Unpressurized Compartment in Civil Aircraft

Decompression load calculation of civil aircraft usually focus on pressurized compartments. However, It is also required that the effects of sudden discharge of cabin pressure into normally unpressurized external compartments adjacent to the pressure vessel be evaluated. Sudden venting of cabin pressure into an external compartment that is not intended to carry significant pressure loads can cause hazard to the airplane by loss of structural integrity or damage to critical systems. This article mainly analyzes the influencing factors of the maximum decompression load in the unpressurized compartment of civil aircraft, and identifies the most critical influencing factors that affect the decompression load in the unpressurized compartment.