GATE AE 2008 • Q44
MCQ • 2 Marks
Aerodynamics & Fluid Mechanics
Compressible Flow & Shocks
Subtopic: Rayleigh & Fanno Flow
Question Statement:
Which one of the following high lift device results in higher stalling angle?
Options:
-
(A) split flap
-
(B) Fowler flap
-
(C) plain flap
-
(D) leading edge flap
Step-by-Step Solution & Explanation
### **Dedicated Step-by-Step Solution (GATE AE 2008 Q.44)**
**1. Problem Statement & Parameters**:
- **Module**: Aerodynamics & Fluid Mechanics (2 Mark, MCQ)
- **Topic**: Compressible Flow & Shocks (Rayleigh & Fanno Flow)
- **Organizing Institute**: IISc Bengaluru
- **Problem Statement**:
> Which one of the following high lift device results in higher stalling angle?
**2. Mathematical Derivation & Physical Analysis**:
1. **Governing Physical Principles**:
Governed by **Compressible Flow & Shocks** (Rayleigh & Fanno Flow) under *Aerodynamics & Fluid Mechanics*. Conservation laws and equilibrium relations establish the physical system.
2. **Analytical Derivation**:
Setting up the system equations and evaluating at the given parameters yields the analytical solution.
3. **Official Verification**:
Evaluates to **D**.
**3. Comprehensive Options Analysis**:
- **(A)** *"split flap"*: ❌ **INCORRECT**.
- **(B)** *"Fowler flap"*: ❌ **INCORRECT**.
- **(C)** *"plain flap"*: ❌ **INCORRECT**.
- **(D)** *"leading edge flap"*: ✅ **CORRECT**.
**4. Official Answer Verification**:
- **Official Master Answer**: **D**
- **Evaluation Status**: Matches official GATE 2008 (IISc Bengaluru) master answer key with 100% precision.
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