11.2 - Basic Structures Flashcards
Basic structures
Where are the body stations measured from
A point in front of the nose of the aircraft
Major zones are divided into sub zones. how are these identified
By the second digit of the number code
How is the skin re-enforced in a semi monocoque airframe
Longitudinal members
on airbus aircraft, which kind of value has a position right of the center line
negative Y value
What is a body station
A plane passing vertically through the fuselage from the referance point in front of the aircraft
Which areas of the aircraft is most prone to lightning strikes
Extremities (wing tips, fin tips etc)
What types of loads are imposed on an aircraft when stationary
Static loading
What are the body coordinates called on an airbus
Body Station
Body Buttock Line
Body Waterline
Where are body waterlines measured from
A parallel imaginary plane, body waterline 0, below aircraft fuselage
What is meant by indirect lightning strike damage
Damage to electrical systems
Which types of loads are floor beams designed to carry
Tensional loads
What is the main function of the door mode selector lever
To arm and disarm the emergency mechanism dependant upon which mode is selected
What is the purpose of the vent hole in the inner pane of a cabin window
To equalise the pressure between the two panes and the cabin
What does the fuselage centre section provide
It provides part of the cabin and the attachment structure for the wing centre box and the main landing gear
What is the function of a fuselage stringer
It gives shape to the fuselage shell and can carry bending, shear, torsion and cabin pressure loads
