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Draw the Airtrainer fuel system
Where is the fuel tank located
Forward of the main spar between ribs 2 and 7
24VDC 13.6 AH sealed lead acid
How does battery cart power work
Battery cart plugs into receptacle on lower left fuselage behind wing. Bypasses master switch.
28 VDC 70 Amps
What isolates the alternator from the main bus bar
60 A circuit breaker on LH switch panel
What does the voltage regulator do
Maintain alternator output at 27.5 VDC, over voltage protection at 32 VDC
What voltage does the Low Voltage Warning Light come on at
Reset CBs only once
Under normal load conditions the battery will supply power for approx 30 mins
Accuracy limit for qty gauges
0 - 75 litres
Assymetric fuel burn limits
Normal - 5 lph
Acceptable - 10 lph
Investigate - 20 lph or more
Assymetric fuel limit while spinning
30 litres per tank
Minimum landing fuel
15 litres in lowest tank
Where do you take it if you wear the brim?
In the rim.
3 ways to tell the voltage is below 25 VDC
Low Voltage Light
MSG on nav annunciator
Message 'Low Bus Voltage' on GPS
2 types of basic propeller system
What is geometric pitch
The distance the prop would move in a solid in one rotation
What is effective pitch
The distance a prop moves through the air in one revolution
What is slip
The difference between geometric and effective pitch
Name 5 forces on a prop
What is helix angle
Angle of advance, the angle between the RAF and the plane of rotation
What components make up a generator system? 7
Engine driven generator
What are the advantages of operating generators in parallel?
Continuity of supply
Less generator wear
What is the principle of a split busbar system?
To enable systems to be split between categories of importance such as vital, essential, and non essential
What are 3 typical aircraft power supply requirements?
26 VAC 400 Hz 3 phase
115 VAC 400 Hz 3 phase
What are the advantages of a brushless generator?
No arcing and less wear
What happens to the CSU if there's a loss of oil pressure?
Coursen with CTM to the stops
What will happen with a CSU pressure excess
Prop will fin until it's at the fine limit which is approx 50 rpm above takeoff?
What's the range of movements for all 3 controls?
: +16.5 -10.5
: +25 -15
What does the RCCO protect against?
Line to earth current
Over and under voltage
What's the advantage of Ni-Cad over lead acid?
Higher capacity/weight ratio
Relatively free from faults
Specs of prop
Hartzell constant speed
76 in diameter
Adjusted by oil pressure
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