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Old 2nd Jan 2011, 15:31
  #58 (permalink)  
Join Date: Jul 2009
Location: France - mostly
Age: 80
Posts: 1,689
Originally Posted by PBL
Terms such as "ram drag" and "inlet drag" are by no means ubiquitous. (...) Definitions would be helpful.
Terms such as "ram drag" and "inlet drag" or "intake momentum drag" are commonly used in jet engine performance analysis.

Intake momentum drag is equal to the product of inlet massflow and free stream velocity.

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