2. Flight Mechanics

Aircraft Control — Quiz

Test your understanding of aircraft control with 5 practice questions.

Practice Questions

Question 1

In a flight control law implementation, a notch filter is often used to suppress structural vibration modes. Which characteristic best describes a notch filter?

Question 2

For an actuator model approximated by the first‐order transfer function $G(s)=\frac{1}{0.2s+1}$ under proportional feedback with gain $K$, what value of $K$ yields a closed‐loop time constant of $0.1\,\mathrm s$?

Question 3

Which statement correctly contrasts a zero‐order hold (ZOH) with a first‐order hold (FOH) in digital flight control computers?

Question 4

If a digital flight control system samples at $50\,\mathrm{Hz}$, what is the approximate phase lag introduced by the zero‐order hold at a control signal frequency of $5\,\mathrm{Hz}$?

Question 5

Which best defines static stability versus dynamic stability for an aircraft?