Discussion
Match each tunnel component in List I with its function in List II.
List I
A. Contraction
B. Honeycomb
C. Second throat
D. Corner vanes
List II
1. Removes swirl and lateral velocity
2. Accelerates the flow and improves its quality
3. Turn the flow without separating
4. Recompresses supersonic flow efficiently
Select the correct match.
Answer: A
Each component addresses one requirement of a good circuit: quality of the stream reaching the model, straightness of that stream, efficient recompression after the test section, and turning the flow round the circuit without loss.
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