Consider formation flight.

Consider formation flight. Assume the airplanes fly side by side with their

wake vortices separated by distance b/2, as shown below. Here, b is the span of the

wing. For (i) 2 airplanes (I did this in class), (ii) 3 airplanes, (iii) 5 airplanes. Determine

the percentage reduction in induced drag for each of the airplanes flying in formation

compared to the induced drag for an airplane flying by itself. For case (ii) and (iii) do

the airplanes flying on the inside of the formation have more or less induced drag than

the airplanes flying on the outside edge of the formation? Determine the average of

the percentage reduction in induced drag and tabulate this as a function of the number

of airplanes in the formation.(In working this problem assume the lift for each plane

stays the same, since the weight does not change. Hint: Evaluate the downwash at the

wing root of each plane).