FA-66187 / Aviation weight and balance / Member archive

Lateral CG divided by off-centerline weight only · case 02

One passenger in a side seat produces a lateral CG equal to the seat arm.

Member previewVariant 2 · 3 implementations · 9 checks per implementation

Case contract

Input {'items':[[lb, longitudinal arm, lateral arm]] (first item basic empty weight; lateral right positive),'long_env':[fwd,aft],'lat_limit':L}. Longitudinal CG must be within inclusive limits; |lateral CG| <= L. Status 'BOTH','LONG','LAT' or 'OK'. Return [long CG r2, signed lateral CG r2, status].

Why this case matters

Helicopters have a lateral CG limit as well as a longitudinal one; lateral arms are signed and all weight, including centerline weight, dilutes the lateral offset.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
pilot right seat	`[106.36, 12.5, "LAT"]`	`[106.36, 1.18, "OK"]`	Failed

MEMBER ARCHIVE

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