Machine-translated by Google. Questions are authored in English.
Top

Discussion

Which statement about bypass ratio is false?

  • A.Raising it improves propulsive efficiency
  • B.Raising it reduces jet noise
  • C.Raising it increases nacelle size and drag
  • D.Raising it increases specific thrust

Answer: D

Specific thrust falls rather than rises, because more air is being accelerated by less. That is exactly why a high bypass engine must process far more air and therefore be physically much larger for the same total thrust.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.