exm Flashcards
what axis is pitch controlled around
lateral axis
whats the purpose of vortex generators
re-energise a slow moving boundary layer
what are flaps used for
increase lift production during low speeds such as take off and landing
what does extending the trailing edge of the wing do
increases the camber to raise the lift co-efficient
what happens to the initial transonic shock wave when during transonic flight
moved all the way to the rear and has affixed to the aircrafts trailing edge
what are the advantages of using titanium on aircraft fuselages
titanium alloy can withstand higher temps whilst maintaining strength and shape
briefly describe semi monocoque (stressed skin) construction
skin reinforced by longitudinal members, also known as stressed skin structure
what are engine nacelles and their use
streamlined enclosures used primarily to house the engine and its components
what are the wing spars
principal structural members of the wing
before entering fuel tanks what must happen
fuel emptied and safety procedures must be followed
where are the ailerons attached
to the wing rear spar
what are spoilers attached using
bolts and bushes
where is pressurised air taken from in the engine
the entire compressor stage
what is the APU used for in the cabin
used to supply bleed air for air conditioning in the cabin
whats the function of the air conditioning system
maintain comfortable air temperature inside the aircraft
what temperature range is the cabin kept at
21-17 degrees celcius
what altitude does the cabin pressurisation help produce
8000ft or less
what is hypoxia
long periods at high altitudes causing fatigue and sickness
insufficient what causes hypoxia
oxygen
if the cabin altitude increases what happens to cabin pressure
cabin pressure decreases
what is in the basic T
airspeed indicator, attitude director indicator, altimeter, horizontal situation indicator
encoding altimeter
servo assisted altimeter
where are strainers in the reservoirs
in the filler neck
what should never be done with finger strainers
never be removed or punctured
what is a hydraulic fuse
safety device
where are hydraulic fuses normally fitted to
brake system, leading edge flap, nose landing gear, thrust reverser pressure/return lines
what is a hydraulic accumulator
potential energy is stored as a compressed gas
accumulators are used in fluid power systems to do what
accumulate energy and smooth out pulsations
where are stainless steel fuel lines used and why
stainless steel lines used in engine compartments and wheel bays that susceptible to debri and corrosion
globally whats the most popular fuel type
jet A1
when does jet A freeze
-40 degrees celcius
what are the 4 fuel leak classifications
stain, seep, heavy seep, running leak
what is SFAR 88
permanent safety of fuel tanks
what is used to remove volatile fuel and chemical vapours from the fuel tank
continual venting
what is used in modern aircraft for the fuel quantity
capacitance type
how are fuel tank units wired
in parallel
if electrical power to refuelling valves is not available what is employed
override mode
describe phosphate ester based fluid
extremely fire resistant but not fireproof under certain conditions, they burn
whats an ACMPs
alternating current motor pumps
what are the different types of packing seal
v-rings, u-ring, o-rings
beta particle ice detection probe
whats one major disadvantage of TKSTM
aircraft can only carry dedicated amount of fluid and will eventually run out
pneumatic rain removal systems
what is the torsion link damper sometimes called
shimmy damper
what aligns the nose wheel for retraction
centring cam
why are wheel wells required
to allow the wheel to retract into the fuselage
what do wheel wells help prevent
drag
what do anti skid systems do
protect tyre and improve braking efficiency
when does a retractable unit lamp illuminate
until the wheel has fully extended to protect the area of excessive heat build up
how many oxygen bottles are there for the flight crew
one or more
where are the oxygen bottles stored on the aircraft
cargo compartment or main equipment centre
how many lenses does the infrared faucet have
2
wastewater doesnt include what
toilet waste
what is grey water used to assist
toilet flushing or drained overboard
what is hard failure
performance change of the system caused by a failure of the operating system
what does the IMA share
resources such as memory and processor
what CPIOM hosts an avionic application
CPIOM-B air conditioning applications
decoder/encoder units type A, decoder/encoder unit type B
