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Record bounded 140 s OSWEC quarter-step parity evidence - #281

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cmccomb merged 1 commit into
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codex/oswec-quarter-step-140-ledger
Oct 13, 2026
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cmccomb merged 1 commit into
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codex/oswec-quarter-step-140-ledger

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@cmccomb cmccomb commented Oct 13, 2026

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Summary

Record the completed 140 s selected-heading OSWEC quarter-step audit in the parity ledger. PR #268's MATLAB source run and independent Python comparison passed the unchanged 120 s numerical limits at both 120 and 140 s.

At 140 s, MATLAB half-to-quarter self-change reaches 0.0004019 rad yaw, 6.864e-5 rad/s yaw speed, 8.236 N m PTO torque, and 0.0762% PTO work. Independent Python-to-quarter differences reach 8.647e-5 rad, 1.507e-5 rad/s, 1.808 N m, and 0.020% PTO work.

The published 600 s irregular case remains open; badges and case counts are unchanged.

Evidence

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cmccomb merged commit 8c98221 into master Oct 13, 2026
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cmccomb deleted the codex/oswec-quarter-step-140-ledger branch October 13, 2026 07:03
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