6. Design and Systems Engineering

Multidisciplinary Design — Quiz

Test your understanding of multidisciplinary design with 5 practice questions.

Practice Questions

Question 1

Which term describes the phenomenon where design variables in one discipline influence performance outputs of another discipline, requiring coupled analysis?

Question 2

Which multidisciplinary design optimization (MDO) architecture centralizes all discipline analyses and optimization variables into a single, unified problem?

Question 3

If the wing aspect ratio $AR$ of an aircraft is increased by 20% while all other parameters remain constant, by approximately what percentage does the induced drag coefficient $C_{D_i}$ change, given $C_{D_i}\propto1/AR$?

Question 4

A turbofan engine has a specific fuel consumption of $0.8\,\mathrm{kg/(kN\cdot h)}$ and produces $50\,\mathrm{kN}$ of thrust. What is its fuel mass flow rate $\dot{m}$ in $\mathrm{kg/s}$?

Question 5

Using central differencing with step $h=0.01$ to approximate the derivative of $f(x)=x^3$ at $x=2$, what is the approximate derivative value?