# Adjustments
- Dropped idle thrust so so that aircraft doesn't start rolling when not nearly
  empty
  - Affected by `n1_and_mach_on_thrust_table`
    - Adjusted idle down on 0 mach entries only
    - Smoothed low end
    - Adjusted mach 0 curve to end at 1
    - Adjusted mach 0.25 curve to have a similar end to mach 0
    - Adjusted mach 0.74 curve to have a similar end to the surrounding
- Spool behaviour after 90 N1
  - Affected by `corrected_n2_from_ff_table`
    - Set idle N2 FF value directly
    - Made linear until original max
- EGT
  - Affected by `itt_peak_temperature`, `itt_tc`, `egt_peak_temperature`,
    `egt_tc`, `egt_tuning_constant`, `fuel_flow_max_itt_factor`,
    `fuel_flow_min_itt_factor`, `itt_maxcorrection`
    - At ISA, SL, 60C, EGT does not exceed 960C TO
      limit
    - Used online references to achieve idle EGT
    - Used Saudi FCOM for high altitude EGT
      - This may be unachievable
- Disabled sim protections
  - Affected by `max_n1_protection`, `max_n2_protection`, `max_egt_protection`
    - All set to zero
- SDK conformance
  - Affected by `fuel_flow_gain`
    - Set to zero as the SDK indicated one ought to

# Additions
- New ground contact model

# Observations
All test are done at SL (EHAM) and ISA (15C, 1013.25 hPa) unless otherwise
noted.

The defined N1 and N2 max values are too low. as per EASA TCDS, the CF6-80C2D1F
has a N1 max of 117.5 and a N2 max of 112.5. I do not know why the lower limits
were chosen, it may be in our interest to adjust this to the actual limits.
This may also influence the WASM since FADEC response and thrust limit
selection may need to be adjusted to allow values higher than currently
possible.

The curves that `n1_and_mach_on_thrust_table` look very strange. I do not fully
understand how these were generated, and more importantly, why they have these
shapes. Specifically the plateau and the bump at 25 N1 for the higher machs are
odd. Comparisons with other addons yielded mixed results, however all of those
curves did not have (or only in regimes unattainable during higher machs) such
oddities.  
Also to note is the drop in thrust for 120 N1 at mach 0 and mach 0.25. This
seems backwards to what physics would suggest, with higher RPM generating more
thrust.

The curves for `n2_to_n1_table` end in a rather sharp plateau. Without knowing
how the actual CF6 behaves, this may be closer to reality than a pure
logarithmic relation of N2 to N1 would suggest.

`corrected_n2_from_ff_table` is an oddball. If the game is told to not use this
table, a default logarithmic curve is used instead. The modifications done here
do not follow this due to the WASM FADEC imposing a non linear spool behaviour
itself. It is to note however, that the sharp upturn at the end of the original
lead to a noticeable increase in spool rate past 90 N1, after first seemingly
slowing down at 75 to 80 N1.

The way the game does EGT is odd to say the least. Take the values with a hefty
dose of salt. I could get SL static to look reasonable, but the EGT at high
altitude remains to low. Adjusting to where high altitude looks reasonable
will produce far too high SL temperatures, going so far as to reach above 1100
degrees Celsius.

# TODO
- AND trim issue
- Slat drag and pitch up moment upon retraction