Forum
Important Notice for New User Registrations
To combat an increasing number of spam and bot registrations, we now manually approve all new user registrations. While this may cause a delay until your account is approved, this step is essential to ensure the quality and security of this forum.
To help us verify your registration as legitimate, please use a clear name as user name or an official email address (such as a work, university, or similar address). If you’re concerned that we may not recognize your registration as non-spam, feel free to email us at with a request to approve your username.
Clarification on Reference Frames for Blade Forces
Quote from SPatel on 8. October 2025, 16:28Hi,
I have a couple of questions regarding the reference frames used to compute the forces acting on the blade:
Are the tangential and normal forces output by the simulation assumed to act at the quarter-chord point or at the aerodynamic centre of the blade section?
Are the lift and drag coefficients reported along the blade aligned with the aero coord system defined for each panel/spanwise station?
Thank you in advance!
Hi,
I have a couple of questions regarding the reference frames used to compute the forces acting on the blade:
Are the tangential and normal forces output by the simulation assumed to act at the quarter-chord point or at the aerodynamic centre of the blade section?
Are the lift and drag coefficients reported along the blade aligned with the aero coord system defined for each panel/spanwise station?
Thank you in advance!
