Focus: This update is entirely focused on the flight model. My goal here wasn’t to trick you with “fake” aerodynamic data or arcade-style tweaks, but to calculate the coefficients based on the actual 3D geometry of the Scarab.
I wanted to keep the Scarab agile and light as originally designed, but I also need to account for the physical reality of the model: specifically, the massive wing-mounted engines create significant moments of inertia. Keep in mind that this is neither a docile Cessna 172 nor a heavy C-130; it is a unique configuration that now behaves according to its actual geometry. It might feel different or perhaps harder to handle initially, but the physics are honest, so I’m leaving it to you to test, and we can tune specific parameters later if something feels off.
So I recalculated every major aerodynamic coefficient in the aerodynamics section: lift, drag, moments, derivatives (Clβ, Cnβ, CYp, Clp, Cnr, etc.). All of them now come from proper reference geometry, aspect ratios, tail volumes, and dynamic derivatives derived from real equations instead of guessed values.
Next steps:
- Some parameters will need polishing based on your feedback
- implementing flap physics and both air and ground braking,
- improving the HUD few more helpful widgets.
The full calculation spreadsheet is available on GitHub here