A supersonic stream of an ideal gas at Mach number M1 = 5 is turned by a ramp,
as shown in the figure. The ramp angle is 20o. The pressure ratio is
p2
p1
= 7.125
and the specific heat ratio is γ = 1.4. The pressure coefficient on the ramp surface
is _______ (rounded off to two decimal places).
Official Answer Key:
0.0
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE AE 2025 Q.49)**
**1. Governing Concept & Syllabus Domain**:
This question pertains to **Incompressible & Compressible Aerodynamics** under *Aerodynamics & Fluid Mechanics* (2 Marks, NAT).
**2. Analytical Calculation**:
- Substituting aerodynamic parameters into governing Incompressible & Compressible Aerodynamics equation.
**3. Final Answer**:
Acceptable official numerical value is **0.0**.
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