NTK vs N1 vs NR

[Bearfoot]

The startup checklist given in "AFSOCI 11-219 Volume 3 ADDENDA B, CL-1" references "NTK" as a parameter to be monitored, e.g.:

 

 

10. Stopcock – “OPEN” (FE)
   a. NTK rise within 3 seconds
   b. Rotor engaged: 20-25% NTK 
   c. Rise of PTIT Max 780 C
   .
   etc.

 

while the document "TM 1-1520-Mi-17-10" references "N1" in the same location.

 

 

 

I am familiar with "N1" from, e.g., the Huey, but this is the first time I have seen "NTK". Are they the same?

Edited October 31, 2017 by Bearfoot

[AlphaOneSix]

They are the same. The Russians refer to N1 as “turbokompressor” or tk.

[Bearfoot]

They are the same. The Russians refer to N1 as “turbokompressor” or tk.

 

Thanks! That clears it up.