11.3 Flashcards
airframe structures aeroplanes
what component reduces length of stringers
frames
what spacing is generally used between frames
20’’
how can stringers be connected at production breaks
stringer splices
what shape clip used to attach stringers to frames
angled or T clips
what prevents pressurised areas from air leaks
faying surface
what does a keel beam do
support wheel well area and wing loads
what seal is used on main entry details
flap type mechanical seals
what are passenger seats attached too
standard seat rails
4 door categories
main entry, service, cockpit, cargo & emergency
equipment in lower lining on main entry door
escape slide/ survival kit
functions of door seals
pressure and weather seals
function of overhead hatch or sliding widow in cockpit
emergency exit for flight crew
how do power assist systems operate on passenger doors
in emergencies
position of mode selector with engaged girt bar
armed , auto and flight
how does emergency door slide connect to cabin floor
girt and girt bar
what door is an over-wing emergency hatch
plug doors , hatches have no hinges
regulation on weight & seating capacity with cockpit door locked
Annex 6
what is annex 6
45500kg or passengers more then 60 , equipped with lockable & fire resistant door.
what’s fitted at lower part of flight deck door
decompression & evacuation flap
what is decompression flap & evacuation flap used for
rapid pressure release in cockpit
what makes bulk cargo doors different
opens inward
how do fwd, aft, side doors open
hyd powered and outward
what direction do floor beams lay
along fuselage length
what happens to horizontal stabiliser if cog moves forward
leading edge stab moves down
how can you reduce wave drag
area rule
what structure has multiple attachment points to share the load instead of one attachment point
Fatigue sharing
what zones does rear pressure bulkhead separate
200-300
what load is carried by longerons
primary bending loads
3 main areas of wing structure
centre, left and right wing boxes
what creates smooth seal between fin and fuselage
dorsal fin
what is the rudder attached to
rear of vertical fin
where should the moveable stabiliser be before measuring deflection angle
must be in zero position
after a repair to flight control surface why are adjustments made
for static balancing
what’s the purpose of a pylon
attach engine to airframe / wing
how many attachment points does the pylon have to the wing
3
how many booster pumps required per engine
2
size of lighting hole
1/4 inch
distance between frames
20”
purpose of stringers
carry stresses induced by fuselage
sweep angle of modern jets
30 degrees
plain flap lift increase
55%
slat lift increase
35%
split edge lift flap increase
65%
slotted flap lift increase
70%
what are rudder pedals used for
rudder , brakes and nose gear steering
where is nacelle intake drain located
lower wing section
How many windows on most aircraft
6
Where is pylon located
Under each wing
Zone for nacelle
400
What construction does the skin cabin pressure to keep the fuselage rigid
Monocoque
What fore and soft structural member is used to maintain contour
Rib
The door selector arms the emergency mechanism lever in what mode
Flight mode
False spar loads
Landing gear attachment
