Question Statement:
Which of the following statement(s) is/are true about the ribs of an airplane wing
with semi-monocoque construction?
Options:
-
(A) For a rectangular planform wing, the dimensions of the ribs DO NOT depend on
their spanwise position in the wing.
-
(B) Ribs increase the column buckling stress of longitudinal stiffeners connected to
them.
-
(C) Ribs increase plate buckling stress of the skin panels.
-
(D) Ribs help in maintaining aerodynamic shape of the wing.
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE AE 2023 Q.27)**
**1. Governing Concept & Syllabus Domain**:
This question pertains to **Structural Mechanics** under *Aerospace Structures* (1 Mark, MSQ).
**2. Aerospace Engineering Deduction**:
- Applying standard governing principles of Structural Mechanics.
- Option **(A)** matches the analytical derivation and official criteria.
**3. Final Answer**:
Correct Option is **(A)**.
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