The combustion process in a turbo-shaft engine during ideal operation is:
Show Hint
- isentropic
- isobaric
- isochoric
- isothermal
The Correct Option is B
Solution and Explanation
Step 1: Identify the cycle.
A turbo-shaft engine follows the Brayton cycle. In this ideal cycle, heat addition (combustion) occurs at constant pressure.
Step 2: Why is it isobaric?
The combustor is designed such that pressure loss is minimal, meaning that burning fuel increases temperature and volume while maintaining nearly constant pressure. This makes the combustion process isobaric.
Step 3: Eliminate incorrect options.
Isentropic: refers to compressor/ turbine processes.
Isochoric: constant-volume heat addition (Otto cycle).
Isothermal: does not apply to gas turbines.
Final Answer: (B) isobaric
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