investigating Fuel Burn too High

[Swift.]

The current modelling of hornet has a fuel burn in excess of the computed numbers pulled from the specific range charts from NFM-210

This problem is spread across the entire flight envelope and at all configurations, so instead of providing 1000s of tracks for each data point, I have supplied a short sampling from either end of the spectrum.

Spoiler

Sample 1
Endurance
5000ft MSL
30,000 lbs GWT
50 Drag Index (single centreline)
5kft30klbs50DI5000pph.trk

Test burn 5000 lbs/hr
Expected burn 3500 lbs/hr.

Sample2
Endurance
5000ft MSL
42,000lbs GWT
75 Drag Index ('double bubble')
5kft42klbs75DI6200pph.trk

Test burn 6200 lbs/hr
Expected burn 5400 lbs/hr

Sample3
Endurance
20,000ft MSL
30,000 lbs GWT
50 Drag Index (single centreline)
20kft30klbs50DI4000pph.trk

Test burn 4000 lbs/hr
Expected burn 3500 lbs/hr

Sample4
Endurance
20,000t MSL
42,000lbs GWT
75 Drag Index ('double bubble')
20kft42klbs75DI5800pph.trk

Test burn 5800 lbs/hr
Expected burn 4900 lbs/hr

Sample5,6
These samples were for a different test, but the fuel burn numbers represent the same issue

20,000ft MSL
30,000 lbs GWT
50 Drag Index (single centreline)
25@052_16@065@8000pph.trk

Test burn@M0.65 8000 lbs/hr
Expected burn@M0.65 7400 lbs/hr

20,000t MSL
42,000lbs GWT
75 Drag Index ('double bubble')
25@080@8000_20@090@11200pph.trk

Test burn@M0.80 8000 lbs/hr
Expected burn@M0.80 6700 lbs/hr

Test burn@M0.90 11200 lbs/hr
Expected burn@M0.90 9500 lbs/hr

It can be observed that the discrepancy is proportionally larger at lower altitudes and airspeeds, precisely when you might want correct fuel burn for fuel ladder calculations.

[Swift.]

Evidence included in discord PM as per the rules