Could somebody critique my logic here please!

I have a Boeing 777-300 perf chart

The chart details the amount of breakaway thrust required at sea level/ISA day. The 777-300 was loaded at 770,000lbs (max taxi weight) and has a 1% uphill slope

Idle power thrust produced (per engine) 4013 lbs

Breakaway thrust required 9125 lbs x 2 (18250 lbs) to get moving

Feed this into AJPC roll power requirements and reverse engineer the friction coefficient (thanks Herve) until approx 18250 lbs is required to move v friction coefficent. The value obtained here is the friction required to be set within the sim = 0.024 to get the aircraft moving at 18250 lbs thrust

Interpolate a little for the uphill slope so make it a little less draggy

0.023 is the correct coefficient of friction for a hard smooth surface to modify within SIM1.DLL? (offsets shared in my other post)

As the 777 is at max taxi weight. 40% N1 is generally the limit for apron maneuvering so in table 1506 0 mach I set idle N1 at around 4013lbs becasue I know this value (4013/115000) 0.034895

and at 40% N1 I set thrust to equal 9125lbs (9125/115000) 0.079347 because I know the aircraft needed more thrust than at idle and imagine %40 is probably the most to be used

Smooth out the thrust curve so its flatter at low N1 and with thrust ramping up exponential from %50 N1 onward

Power ground handling complete!

Any comments?

Aware that all other airfiles will be screwed up and taxi like rockets!

thanks