Question $1$

Data for narrow$-$body aircraft $($those with single aisle in the cabin$)$ have been collected and used to develop several

parametric models that will aid the system engineers during the pre$-$phase study of a new subsonic airliner. These data

are plotted and presented in the Figure Q$3\mathrm{.}1$ below.

The team has identified a potential role for a system with the objective of carrying a maximum of $210$ passengers and a

range $4000$ nm $($nautical miles$).$ Use the parametric models given to estimate the take$-$off thrust $($kN$).$

Do not include any units, numerical value only must be entered in the box provided to the nearest integer.