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I will preface this with the fact that I am not a physicist...I am an engineer by trade. I am working on a research problem that will involve flight of an organism with varying shapes, and I am interested in finding an open-source environment that successfully models the varying forces and whatnot found in the atmosphere.

Basically, I want to create a 3D representation of my flyer and put it into an environment and be able to have natural forces act upon it (to see how it reacts).

Does such a beast exist?

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closed as off topic by Qmechanic, Manishearth, Waffle's Crazy Peanut, Emilio Pisanty, Sklivvz Dec 27 '12 at 16:03

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Check out JSBSim ( which allows you to add models. It is one of the engines in FlightGear (

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