With reference to Rotating Detonation Engines (RDEs), consider the following statements: 1. RDEs use pressure-gain combustion, in which a detonation wave continuously travels around an annular combustion chamber, potentially achieving higher thermodynamic efficiency than conventional combustion systems. 2. Unlike conventional turbine engines, RDEs require multiple moving turbine blades inside the combustion chamber to sustain the rotating detonation wave. Which of the statements given above is/are correct? |ForumIAS

Q. With reference to Rotating Detonation Engines (RDEs), consider the following statements:
1.RDEs use pressure-gain combustion, in which a detonation wave continuously travels around an annular combustion chamber, potentially achieving higher thermodynamic efficiency than conventional combustion systems.
2.Unlike conventional turbine engines, RDEs require multiple moving turbine blades inside the combustion chamber to sustain the rotating detonation wave.
Which of the statements given above is/are correct?

[A] 1 only

[B] 2 only

[C] Both 1 and 2

[D] Neither 1 nor 2

Answer: A

Notes:

Explanation: 1 only

Statement 1 is correct: RDEs employ pressure-gain combustion. A supersonic detonation wave travels continuously around an annular chamber, offering the potential for greater thermodynamic efficiency and reduced fuel consumption compared with conventional combustion.

Statement 2 is incorrect: A major feature of RDEs is the absence of moving parts within the combustor. The rotating detonation wave itself propagates around the annular chamber and sustains combustion.

Source: TH

Post-Mains Strategy Session by Mr. Ayush Sinha | ForumIAS