N1, N2, N3
What is n1, n2, n3?
N1, N2, and N3 are the rotational speeds of different compressor and turbine sections inside a jet or turboprop engine, each expressed as a percentage of their maximum RPM.
Studying for an FAA written test?
Terms like n1, n2, n3 show up on the FAA knowledge test. Study them in context with ACS-aligned practice questions, AI explanations, and the cited FAA handbook reference behind every answer — free to start.
Related terms
- moment
- moment arm
- moment index (or index)
- mountain wave
- nickel-cadmium battery
- night vision
- nonprecision approach
- northerly turning error