M11.2

Question 1

What are PSEs

Answer 1

Principal structural elements.
A part of the ac that contributes significantly to the carrying loads.

Eg wings, pressurised areas, horizontal stabiliser.

Question 2

What are primary structures

Answer 2

Any part of the ac that should it fail it could led to catastrophic disasters

Question 3

What are secondary structures.

Answer 3

Encompasses all non-primary structural elements.

Question 4

What does the fail safe method rely upon

Answer 4

Relies upon duplication of certain structural members.

Question 5

What are safe life concepts

Answer 5

Based on a prediction of how long a component can stay in service before reaching a pint of fatigue damage.

Question 6

What are damage tolerance concepts.

Answer 6

If damage occurs the structure can still operate without failure until the damage is found.

Question 7

What are the 5 main structural units.

Answer 7

The fuselage
The wings
The stabilisers
Th flight control surfaces
The landing gear

Question 8

What are the major ac zones

Answer 8

100 - lower half of fuselage
200 - upper half of fuselage
300 - empannage,vertical+horizontal stabs
400 - power plants and the struts
500 - left wing
600 - right wing
700 - landing gears and landing gear doors
800 - doors.