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What does M/R stand for?

M/R stands for Main Rotor (helicopter)

This definition appears frequently and is found in the following Acronym Finder categories:

  • Military and Government
  • Science, medicine, engineering, etc.

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Other Resources:
We have 107 other meanings of M/R in our Acronym Attic

Samples in periodicals archive:

The corrosion was so bad that they had to remove the assembly, which fits over the main rotor shaft and rests on the top of the main gear box.
The twelfth flight test marked the first time the company attempted to slow the main rotor - by around 5% - while flying faster to keep the main rotors from approaching supersonic tip speeds.
Impact points were the MP's windscreen, nose cowling, main rotor blade(s), tail rotor blade(s), stabilator, landing gear cowling, flare dispenser, and the right .