GATE AE 2018 • Q12
MCQ • 1 Mark
Aerodynamics & Fluid Mechanics
Incompressible & Compressible Aerodynamics
Subtopic: Airfoil & Wing Theory
Question Statement:
The pitching moment of a positively cambered NACA airfoil about its leading edge at zero-
lift angle of attack is
Options:
-
(A) negative.
-
(B) positive.
-
(C) indeterminate.
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(D) zero.
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE AE 2018 Q.12)**
**1. Governing Concept & Syllabus Domain**:
This question pertains to **Incompressible & Compressible Aerodynamics** under *Aerodynamics & Fluid Mechanics* (1 Mark, MCQ).
**2. Aerospace Engineering Deduction**:
- Applying standard governing principles of Incompressible & Compressible Aerodynamics.
- Option **(A)** matches the analytical derivation and official criteria.
**3. Final Answer**:
Correct Option is **(A)**.
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