Producing cruise charts for Ka-50

I have figured out the math required to produce cruise charts from flight data but I'm not capable of producing the data myself. Tacview is able to record everything else except torgue or fuel flow. One of them is required to get all the data. My question is if someone is able to create a script that is able to extract either of those from the sim and put it in a file with some other data in similar fashion to the script tacview uses. If neither is available directly then maybe the fuel flow can be calculated from fuel amount by comparing how much was taken from the tanks during certain time interval.

With the charts it would be possible to accurately determine speeds for maximum endurance and range in different conditions, fuel flow and endurance time and also the optimum cruise altitude for different weights and distances.

This is an example of what I'm aiming for:

In flight testing, an aircraft must have sensors to calculate the fuel flow, it can be worked out but I'v never seen it done, always fuel flow is measured directly.

All of what you are looking for has been calculated by the flight test team already! ;)

There is no need to do this, all that data is available.

P.S the SFC for a idealised turbofan/jet is fuel burnt per unit time/ Thrust, without specialist equipment added to the KA-50 your not going to be able to produce the tables you want.

You could always determine these empirically: Run a series of flights at differing speeds, altitudes, temperature, etc. with a fixed amount a fuel and record the time and distance at which you run out of fuel. (Time zoom is a wonderful thing!)