Kazaa,
I would say, a well made race driving or combat flying(ww2) simulations, both requires a lot of research and coding/testing.
OT
This is based to my limited flight sim making experience.
I assume, the HTC has a FDM development/analyse tool to create a specific airplane FDM-model, based to the know facts like wing sizes, mass & etc.
It allows to play in real-time with actual parameters & correction factors via a response curves.
This will require a lot of pure manual testing time to meet a specific plane characteristics in different conditions like:
- engine / prop output vs speed vs alt
- mass ( fuel, ammo & ord)
- CG shift due above
- drag (mass & external ord) due above
- climb-, level- & dive speeds due above
- roll-rate due above
- and who knows what due above
Once all seems to be in it's place, the HTC will export/build an fps friendly 'public model' with hard coded data, which is added to the next version .exe.
Just guessing
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