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Add Trefftz-plane induced drag and the attached-trailed leg direction... #411
Description
Add Trefftz-plane induced drag and the attached-trailed leg direction option from the Python VSM v2.3.0
Python (awegroup/Vortex-Step-Method, tag v2.3.0) reports results["drag_induced_trefftz"] from BodyAerodynamics.compute_trefftz_plane_induced_drag and takes BodyAerodynamics(..., leg_direction="rib"|"streamwise"|"perpendicular"), with Panel.set_leg_end_points and reset_legs_to_ribs. Julia has neither. Its tests are tests/BodyAerodynamics/test_leg_direction.py and test_curved_bound_vortex.py (on-blade drag against Trefftz within about 1 % on arc wings). Build on the branch of the pull request for #410, which brings the default solve into agreement; test/data/python_reference/generate_reference.py there is how to get reference numbers from Python, run in a container.
Activity
1-Bort-1 commentedon Nov 5, 2026
Adding Trefftz-plane induced drag and the rib/streamwise/perpendicular leg direction option, ported from Python VSM v2.3.0 and checked against its reference numbers. Built on #415, so this waits for #415 to go green. Leaving out the other v2.3.0 result fields (#413) and loop safeguards (#412).
1-Bort-1 commentedon Nov 5, 2026
Waiting for #415. This branch is built on it, so the turn picks up again when its checks are green, or when it is no longer open.