   Engine for flightsim
  Hi,I am planning to start a flightsim project. Which engines would you recommend? Or would you recommend starting from scratch?ThanksAndi   
  What are your goals for a flightsim? What do you need? What do you want? What aspects are important to you?   ;  I want to have an area of about 500km * 500km, so I need a terrain engine that supports that size at reasonable detail. Then I want to have 3d (clickable) cockpits, and the flight physics should be realistic. Altough since I want to simulate modern jets like the EF200, which are fully fly-by wire, maybe I get away with a simplified flight model (not going to simulate damages into detail). Basically I want to do something similar to Lock-on: Modern air combat, but a smaller scope.   ;  FlightGear is the only open source engine I know of. Maybe you can start there and then find more information: http://www.flightgear.org/;  Well, you could use SimGear, which is used by FlightGear (GPL). I think SimGear was licensed under the LGPL, so that isn't a problem.Edit: 