An experimental study is planned to map out the low-Reynolds number
incompressible steady two-dimensional aerodynamic characteristics of a
promising novel airfoil. The operational parameters of the problem are the speed,
density and viscosity of the freestream, the chord of the airfoil and its angle of
attack. If the objective is to achieve this with the minimum number of test runs
Nmin while taking 10 equally-spaced test values of each independent parameter of
the problem in a suitable range, then Nmin is ________.
Options:
(A) 10
(B) 100
(C) 10,000
(D) 1,00,000
Official Answer Key:
A
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE AE 2026 Q.43)**
**1. Governing Concept & Syllabus Domain**:
This question pertains to **Incompressible & Compressible Aerodynamics** under *Aerodynamics & Fluid Mechanics* (2 Marks, 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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