Which component seals the aircraft opening to allow pressurization when the 105mm is retracting?

Which component seals the aircraft opening to allow pressurization when the 105mm is retracting?

• A. Leatherman
• B. 105mm Breech Seal
• C. Blast Diffuser
• D. Buffer and Striker Plate and Snubbers

Answer: (C)

When the 105mm gun is retracted, the aircraft port must be sealed to maintain cabin pressurization and prevent a blast from escaping through the opening. A blast diffuser is designed to seal that port and manage the blast flow as the gun moves, keeping the pressure inside the aircraft stable and directing any exhaust away from sensitive areas. The breech seal, by contrast, is focused on sealing the gun breech during firing, not the aircraft opening during retraction. The other parts—buffers, striker plate, and snubbers—relate to the gun’s recoil and firing mechanism rather than sealing a port. A Leatherman isn’t part of the system at all. So the blast diffuser best fits the role described.

When the 105mm gun is retracted, the aircraft port must be sealed to maintain cabin pressurization and prevent a blast from escaping through the opening. A blast diffuser is designed to seal that port and manage the blast flow as the gun moves, keeping the pressure inside the aircraft stable and directing any exhaust away from sensitive areas. The breech seal, by contrast, is focused on sealing the gun breech during firing, not the aircraft opening during retraction. The other parts—buffers, striker plate, and snubbers—relate to the gun’s recoil and firing mechanism rather than sealing a port. A Leatherman isn’t part of the system at all. So the blast diffuser best fits the role described.