If these conditions persist, and an airplane flies in both the east and the west directions to

complete a roundtr$,$ does the overall round$-$trip time increase or decrease relative to the case

of no jet stream?

r Estimate by how much the overall round$-$trip time changes during a $4,000-$mile trip between the

east coast $$f tn$"$ United States and Europe with the jet stream as compared with no jet stream.

o Now assume that these "new" jet stream conditions are pefrnanent. What is significance for

Mcn$,$ Md$.$ug$-$divergence$$ CtlCo, Cn$,$i$,$ AR$,,$ TSFC$,$ etc.? If you could, what type of design changes,

if any, to the uitfoil, wing, and airplane would you recommend given these new conditions?