Aerospace Blockset: 6DoF (Euler Angles) How to use with a CG not located at the origin?

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James 2022-6-15

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回答： Nirupama 2024-1-25

In the documentation for the 6DoF (Euler Angles) block, it says that the center of gravity (CG) is located at the origin of the body-fixed coordinate frame. In other words, CG = [0;0;0]. Is it posible to use a CG that is not located at the origin of the body frame? We are simulating a vehicle where the CG = [0; 0; Zcg]. How may we use this Simulink block for the case where the CG of the vehicle is not located at the origin of the body reference frame?

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Answer 1

Nirupama 2024-1-25

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Hi @James,

Yes as you have mentioned above, in the documentation for 6DOF (Euler Angles) block it is mentioned that the origin of the body-fixed coordinate frame is the center of gravity of the body. I looked at the parameters of this block in Simulink. Unfortunately, there is no option to change the origin of the body-fixed coordinate frame in the 6DOF (Euler Angles) block.

Documentation link: https://www.mathworks.com/help/aeroblks/6dofeulerangles.html#mw_2f302a65-767b-4836-81d3-8d9423421b84

Regards,

Nirupama