I have a question about LiftDragPlugin

asked 2019-07-14 21:23:16 -0500

czq13 gravatar image

Hello, I read the LiftDragPlugin.cc carefully´╝î and I think the 225 line may have mistakes.

This line looks like : ignition::math::Vector3d velInLDPlane = vel - vel.Dot(spanwiseI)*velI;

I think this line should be

ignition::math::Vector3d velInLDPlane = vel - vel.Dot(spanwiseI)*spanwiseI;

because "vel - vel.Dot(spanwiseI)*velI;" does not change the direction but only the norm of vel. Therefore, the vel should substract the spanwise veciloty.

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