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Linear Variation
rodcarey
Topic Author
rodcarey created the topic: Linear Variation
Hi Guys,
Still a little confused on the loading of echo and when to use the linear equation. Could I summarize below to obtain feedback please
Total weight 2763 total Moment 679
Check center of gravity envelope performance supplement page 18 (Aft)
If the moment is aft, then apply either shift or add/deduct weight formula
Total weight 2763 total Moment 600
Check center of gravity envelope performance supplement page 18 (Fwd)
Check weight below 2360 then apply shift formula or graph to add/deduct weight, if between 2360-2950 then apply linear formula to obtain C of G for shift formula, or graph to add/deduct weight.
AFT LIMIT: You can always use the formula (flow chart) for any problem on the aft limit since the aft limit is fixed.
FORWARD LIMIT: You can use the formula (flow chart) on the forward limit only for shifting weight, (weight must remain constant).
If you are adding or subtracting weight to get to the forward limit you must use the loading graph.
