GATE AE 2026 • Q20 MCQ • 1 Mark

Aerodynamics & Fluid Mechanics

Incompressible & Compressible Aerodynamics

Subtopic: Airfoil & Wing Theory

Question Statement:

The fundamental purpose of the Kutta condition in the thin airfoil theory is ________.

Options:

  • (A) to determine the total strength of the source distribution
  • (B) to determine the speed of the uniform flow
  • (C) to incorporate the essential effect of viscosity in the potential flow theory
  • (D) to incorporate the concept of induced drag in the inviscid theory

Official Answer Key:

A

Step-by-Step Solution & Explanation

### **Official Solution & Step-by-Step Derivation (GATE AE 2026 Q.20)** **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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