By how many inches forward did the CG move when the 20 pounds of potable water and 23 pounds of hydraulic fluid were added, compared to the empty-CG position?

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Study for the Aircraft Weight and Balance Test. Prepare with flashcards and multiple-choice questions with hints and explanations. Ace your aviation exam with confidence!

Multiple Choice

By how many inches forward did the CG move when the 20 pounds of potable water and 23 pounds of hydraulic fluid were added, compared to the empty-CG position?

Shifting the CG occurs when you add weight in front of or behind the empty-CG position. The distance the CG moves is found from the total moment of the added weights about the empty-CG, divided by the total added weight: delta CG = (sum of Wi * di) / (sum Wi).

Here the added weights are 20 lb of potable water and 23 lb of hydraulic fluid, for a total of 43 lb. The CG will move toward the added weights by the average distance of those weights from the empty-CG, weighted by their masses. Using the given data, this results in a forward shift of 0.652 inches, so the CG moves forward by 0.652 inches relative to the empty-CG position. The forward direction makes sense because both added weights are located ahead of the empty-CG.

By how many inches forward did the CG move when the 20 pounds of potable water and 23 pounds of hydraulic fluid were added, compared to the empty-CG position?

Study for the Aircraft Weight and Balance Test. Prepare with flashcards and multiple-choice questions with hints and explanations. Ace your aviation exam with confidence!

By how many inches forward did the CG move when the 20 pounds of potable water and 23 pounds of hydraulic fluid were added, compared to the empty-CG position?

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