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Vazgriz - Creating a Flight Simulator in Unity
This is an amazing series on creating a flight simulator, the first part is on the physics of flight and how to implement them in a game
https://www.youtube.com/watch?v=7vAHo2B1zLc
https://vazgriz.com/346/flight-simulator-in-unity3d-part-1/
https://github.com/vazgriz/FlightSim