The initial deflection angle may have been calculated incorrectly.

[Hermse]

 # angle of deflection
        xi_init = cosd(yaw_i) * sind(yaw_i) * ct_i / 2.0

The initial deflection angle may have been calculated incorrectly.

I found the equation of the initial deflection in the paper: https://www.sciencedirect.com/science/article/pii/S0960148120300318

Proposed solution

 # angle of deflection
        xi_init = cosd(yaw_i) * cosd(yaw_i) * sind(yaw_i) * ct_i / 2.

Alternatives considered

I am not sure if it is a mistake or not, because the cosd(yaw_i) is close to 1 in fact.

[paulf81]

Hi @Hermse , sorry this issue has been over-looked for so long. We will check more into this but at first glance believe this to be related that the ct value already includes a cos(yaw). @rafmudaf will follow-up with more details and we will try to clarify this in the future

[Hermse]

您发给我的消息已经收到，我将尽快处理，谢谢。