Question

Buckling of the fuselage skin can be delayed by

• A. Increasing internal pressure
• B. Placing stiffeners farther apart
• C. Reducing skin thickness
• D. Placing stiffeners farther and decreasing internal pressure

Hint:

Internal pressure acts as a stabilizing force against buckling.

Answer 1

The Correct Option is A

Buckling of the fuselage skin in an aircraft can be delayed by increasing the internal pressure. When the internal pressure is increased, it provides additional outward force on the fuselage skin, thereby enhancing its ability to withstand compressive loads and delaying the onset of buckling. This is because the increased internal pressure opposes buckling by applying a stabilizing stress.

To understand this concept, consider the relationship between buckling and pressure:

• Increased internal pressure generates a stabilizing stress which increases the critical buckling load. Higher critical buckling load means the fuselage can handle more compressive force without failing.

Thus, increasing internal pressure is an effective way to delay skin buckling.