In a particular rocket engine, helium propellant is heated to 6000 K and 95% of its total enthalpy is
recovered as kinetic energy of the nozzle exhaust. Consider helium to be a calorically perfect gas
with specific heat at constant pressure of 5200 J/kgK. The exhaust velocity for such a rocket for an
optimum expansion is _____ m/s.
Official Answer Key:
0.0
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE AE 2016 Q.48)**
**1. Governing Concept & Syllabus Domain**:
This question pertains to **Air-Breathing & Rocket Propulsion** under *Propulsion* (2 Marks, NAT).
**2. Analytical Calculation**:
- Substituting aerodynamic parameters into governing Air-Breathing & Rocket Propulsion equation.
**3. Final Answer**:
Acceptable official numerical value is **0.0**.
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