Mig-21-Flight Model - Check six

Mig-21-FM-Identification-Rev. 14
Load factor limits (Ng).
At the moment, here are the Load factor operational limits documents we have:
Mig-21bis (Russian)
The table on the left can be translated as follow:
Maximum Indicated Air Speed : 1,300 km/h
Maximum Mach number : 2.05
For Mach number lower than 0.8
Ng < 8.5 if Fuel less than 900 l.
Ng < 8.0 if Fuel less than 4,100 l.
For Mach number over 0.8
Ng < 7.0 if Fuel less than 900 l.
In addition, from testimony of a Cuban Air Force pilot we
also have
- When loaded with rocket pods or external tanks with fuel, Ng is limited to 5 (meaning that empty
external tank do not limit load factor)
- When loaded with bombs Ng is limited to 4.
Mig-21MF/iz.96F
The table on the left can be translated as follow:
Altitude under 11,500 m
Maximum Indicated Air Speed : 1,300 km/h
Altitude over 11,500 m
Maximum Mach number : 2.1
For Mach number lower than 0.8
Ng < 8.5 if Fuel less than 1,200 l.
Ng < 8.0 if Fuel less than 1,600 l.
Ng < 7.0 if Fuel more than 1,200 l or 4 R-3S. (looks like a typo error here, I believe
“more than 1,600l)
For Mach number over 0.8
Ng < 7.0 if Fuel less than 1,200 l.
Ng < 6.0 if Fuel more than 1,200 l or 4 R-3S.
There are also some additional figures indicating limitations that doe not fit with the one described
below:
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