Given a MAC from stations 860.2 to 1040.9, where is the CG located if it is at station 910.2?

To determine the location of the Center of Gravity (CG) as a percentage of the Mean Aerodynamic Chord (MAC), one must first calculate the total length of the MAC and then use that information to find the relative position of the CG.

The MAC is defined from the starting point to the endpoint, which in this scenario spans from station 860.2 to 1040.9. The MAC can be calculated as follows:

1. Calculate the total length of the MAC:

• MAC Length = 1040.9 - 860.2 = 180.7 units

2. Determine the distance of the CG from the leading edge of the MAC:

• Position of CG relative to the starting point of the MAC = CG location - MAC start = 910.2 - 860.2 = 50.0 units

3. Now, convert this distance into a percentage of the total MAC length:

• Percentage of MAC = (Distance of CG / Length of MAC) * 100

• Percentage of MAC = (50.0 / 180.7) * 100 ≈ 27.7%

This calculation reveals that the CG is located at approximately 27.7% of the MAC