2. Flight Control System

Question 1

What are some advantages from Fly by wire?

Answer 1

Weights and parts reduction
lower maintenance cost
Pilot work reduction
Better and common aircraft handling characteristics
better flexibility
feature of autopilot are in manual control mode available

Question 2

What primary flight control Devices are there?

Answer 2

Rudder, Ailerons, Elevator

Question 3

What secondary flight control devices are there?

Answer 3

High lift, Spoiler, Trimmable Horizontal Stabilizer (THS)

Question 4

Whats the difference between a Krueger Flap and a Slat?

Answer 4

Krueger Flap extends down and forwards and basically increases the wingattack field
Slat only drives forward
Droop nose drives downward

Question 5

What aero systems exists at back of the wing?

Answer 5

Fowler Flaps, single, double triple slatted
Dropped hinge
Four bar linkage

Question 6

What 2 types of Faults are there?

Answer 6

Class 1 Fault:
failure which results in one particular component being rendered inoperable
Class 2 Fault:
results in some particular component remaining active, but the functionality it provides is in error

Question 7

Explain Redundancy, Dissimilarity and Segregation

Answer 7

Redundancy: is the multiplication of flight critical components or functions of the safety-critical system with the intention of increasing reliability of the system
Dissimilarity: Dissimilar implementations increase robustness to common-mode faults for safety critical systems by using dissimilar hardware and or software -> tolerate design error
Segregation: natural part of aircraft systems integration. usually adopted for reasons of integrity or criticality and is applied for wiring, hardware and software