Every build is checked against 96 reference calculations.

By attachment

Deviations are |engine − reference| / reference on the largest local primary membrane stress (Pl) and the largest combined stress (Pl + Pb + Q) of each table, the two values the acceptance checks use.

Checks against the bulletin itself

Beside the reference set, the engine's own test suite checks the parts of WRC 537 that have closed forms: shear V/(π·r₀·T) and torsion Mt/(2π·r₀²·T) at a round attachment, the hoop and longitudinal pressure terms, linearity in the loads, and the symmetry of the moment terms between opposite locations. Each intermediate value — γ, β, every figure read and every stress term — is printed in the calculation trace and the report, so any result can be checked by hand against the bulletin.

What is not validated yet

• Nozzles on cones use an equivalent cylinder at the local radius. It is an industry approximation, not a bulletin method, and every cone result says so.
• The diameter-ratio advisories (when WRC 537 stops applying and WRC 297 or FEA should be used) are under engineering review.
• Inclined nozzles and clips on cones are outside the engine's scope; it refuses them rather than guess.
• The shell-element FEA tool is in early access and under its own verification; nothing on this page covers it.