flight deck/cabins Flashcards
what must a flight deck windown withstand?
- bird strikes
- pressurization load
- heating load
- forward speed load
what is the Flight deck window made of
1. toughned glass on each side of a vinyl interlayer
2. viny interlayer handles **load **and can stretch and deform should the impact be great enough to shatter glass
3. electricity conducted to the insider of the outer glass pannel to de-ice and defog ice and also give strength / resliences to the windowns
heating of cockpit window is important because
hot windows are elastic and stronger than non-heated windows.
Eye Reference Position
markers on the windshield to help position the pilot at optimum height for outside visibility and instrument scan
it standardizes the visual attitude especially on approaching and landing
Direct Vision DV Windows
- a window on the side of the forward main window
- can open
- that allows pilot to seen(to approach/land) if main window is hindered
- defogging possible
- de-icing may not be present
can be opened when:
1. need to use it as emergency exit
2. aircraft is depressurizing
3. demisting system has failed
DV windows do not have..
NO heating mechanism for de-icing
but defogging is possible
what kind of windows are used on light aircrafts
prespex
Passenger cabin windows
designed as fail safe
two panes of acrylic plastic mounted in an airtight rubber seal fitted into a metal window frame.
The inner and outer panes are each capable of taking the full cabin pressurization load.
If one pane fails the other will prevent loss of cabin pressure.
Aircraft doors
Aircraft doors may be side or top opening.
All passenger doors on pressurized aircraft are now of the **plug type. **
They must be easy to open in an emergency and
Usually have escape slides built into the construction of the door.
A visual inspection panel is also required.
Unpressurized aircraft have doors of a lighter construction
what is a ‘plug’ type
When door is closed the internal pressure holds the door shut and locking pins engage with the frame structure to ensure that it cannot open in flight.
To open a plug type door, it is **pulled inwards and rotated sideways. **
Some open outwards for better access.
They must be able to withstand the pressure loads if the aircraft is pressurized and have to have a means of preventing the aircraft being pressurized with the door unlocked.
Some aircraft have freight doors that…
Some aircraft have freight doors in the side of the fuselage, these usually hinge upwards and open by means of an electric motor or hydraulic power pack. The loads go through the hinges.
