11.9 Active Load Control

Question 1

When flying, the aerodynamic loads on the wing interact with what?

Answer 1

The wing structure itself

Question 2

To maximise performance, what are wings designed to have?

Answer 2

High aspect ratios

Question 3

What are two aeroelastic load controls?

Answer 3

Manoeuvred load control (MLC) and Gust load alleviation (GLA)

Question 4

How can MLC and GLA benefit the aircraft?

Answer 4

Weight saving and increased wing spans

Question 5

How does manoeuvre load control (MLC) work?

Answer 5

Use the wing control surfaces (aileron and lift spoilers) to move the centre of lift inboard during manoeuvres, such that the wing root bending moment, a measure of wing structural loading, is reduced

Question 6

How does gust load alleviation (GLA) work?

Answer 6

It is a control system fitted to some Fly-by-wire (FBW) aircraft that reduces the effect of gust loads on the aircraft by deflecting control surfaces such as ailerons, rudder and elevators

Question 7

Which of the flight control surface is used during gust load alleviation (GLA)?

Answer 7

Ailerons

Question 8

Which of the flight control surface is used during manoeuvre load control?

Answer 8

Ailerons