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2024 PRE-SOLO INFORMATION EXAM WITH CORRECT ANSWERS
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2024 PRE-SOLO INFORMATION EXAM WITH CORRECT ANSWERS
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2024 PRE-SOLO INFORMATIONEXAM WITH CORRECT ANSWERS
Gascolator - CORRECT ANSWERS-acts primarily as a fuel drain for water and
small particles of sediment, bottom of nose
912iS Air Intake System - CORRECT ANSWERS-1. Air through nose
2. Airbox
3. Air Filter that splits into cylinders
4. Goes through manifold into fuel injectors
912is Fuel Pumps - CORRECT ANSWERS-Electrically driven & powered by
ECU, pressurizes
depends on pumps
Rotax 912 ULS Fuel System - CORRECT ANSWERS-1. Selector
2. Coarse Filter
3. Electric Fuel Pump
4. Mechanical Pump
5. Engine
6. Unused Fuel returns to selected tank
Rotax 912 ULS Fuel Flow - CORRECT ANSWERS-uses Carburetors that depend
on air.
Carbs use piston stroke.
Constant depression Carburetor, 2 CD in ULS that uses air pressure to control
fuel air mixture automatically.
Rotax 912 ULS Fuel Pumps - CORRECT ANSWERS-1 mechanical
1 electrical (backup pump)
Spark Plugs (Both Engines) - CORRECT ANSWERS-2 spark plugs per cylinder,
just timed differently
ignites fuel/air mixture resulting in power
Max Gross Weight - CORRECT ANSWERS-1320 lb for operation not intended
on water
1430 lb on water
,Powerplant - CORRECT ANSWERS-Rotax 912ULS/iS
Horizontally Opposed 4 stroke, 4 cylinder engine
Maximum Continuous RPM - CORRECT ANSWERS-5500 RPM
(the most thrust an engine can produce over a long period of time)
How is it cooled? - CORRECT ANSWERS-Oil, Coolant, Air
Oil System - CORRECT ANSWERS-Dry sump - forced lubrication using a
pump, seperate reservoir
Reduction Gearbox - CORRECT ANSWERS-2.43:1 ratio
crank to propeller rpm
engine and propeller both have their own efficient speeds to run at =
increases efficiency basically as well as not breaking the propeller tips
Hangor4 - CORRECT ANSWERS-Horizontally Opposed
Air/Liquid cool
Naturally Aspirated
Gear Reduction
Oil system is "dry sump" forced lubrication
Rotax 912 ULS/iS
4 Stroke, 4-cylinder engine
Rotax 912 iS - Electrical System - CORRECT ANSWERS-2 internal generators
(A & B) that output alternating circuits into direct currents via rectifier
regulators.
Generator A controls ECU via Lanes A & B.
Generator B controls Battery
Generator System - CORRECT ANSWERS-consist of a ring of a component
called a stator that has 24 magnets (magnetics wrapped in copper wire)
Crankshaft is connected in the middle of this ring, when crankshaft spins, the
stator also spins. The relationship between the stator and spinning magnet
generate power.
This power is split in halves sent to one of the two rectifier regulators to
create direct current.
Direct Current (DC) - CORRECT ANSWERS-The direction of the current of the
voltage is always constant.
Most equipment on the sling is powered via DC currents.
,Alternating Current (AC) - CORRECT ANSWERS-The direction of the current is
always switched periodically and the voltage is also switched.
Rectifier Regulators - CORRECT ANSWERS-A & B located on sides of fuse box
Engine Control Unit (ECU) - CORRECT ANSWERS-source that powers the
engine, controls mixture of fuel and air, sensors that calculate performance,
position and error free operation.
8 spark plugs (4 ignition coils), 8 fuel injectors, 2 fuel pumps.
Lanes A & B - CORRECT ANSWERS-if one lane is faulty, the other lane takes
over due to sensors and actuators to keep redundancy.
ECU automatically selects a lane to control engine
each lane controls one spark plug, one fuel injector in each cylinder so 2 of
each per cylinder totaling 8 each. It can be any combination between the 2,
pilot won't know.
12v Battery - CORRECT ANSWERS-Rotax 912iS have 1 main battery. Provides
power to airframe as well as charging two instrument backup batteries.
G5 second battery has 8-hour battery when fully charged. During normal
operation, main battery is always charging g5 battery.
G3X last battery marked as EFIS backup. Allows EFIS and engine to run even
if main battery dies for 30 minutes. EFIS backup constantly charged by main
battery.
Generator A - CORRECT ANSWERS-powers ECU which powers Lanes A and B
which controls ignition coil that sparks 8 spark plugs, 8 fuel injectors, 2 fuel
pumps.
Generator B - CORRECT ANSWERS-powers battery which powers lights, trims,
flaps
provides power to entire airframe, always charging g5
3 batteries total (1 main, 2 backup)
Volts - CORRECT ANSWERS-volts 1 is main battery
volts 2 is efis backup battery
AMPS - CORRECT ANSWERS-indicated surplus or lack of charge.
+1 means overcharge, 0 is perfect, -1 troubleshoot.
, EMS (engine management system) - CORRECT ANSWERS-controls ignition,
fuel injection, fault, generator
consists of a range of components such as sensors, relays, actuators and an
Engine Control Unit.
ECU is the brain
Lane Checks and RPM Drops - CORRECT ANSWERS-Runups are performed in
Eco Mode but turning off Lane A turns it off & goes into power mode which is
why RPM increases instead of decrease.
Lane A control eco mode
Fuel Tanks - CORRECT ANSWERS-19.8 gallon tanks (39.6 total)
19.3 useable each tank (38.6 total)
iS burn 3.5 gph
ULS burn 4.9 gph
Academy use 5gph for safety and ease of calculations
Fuel Selectors - CORRECT ANSWERS-2 fuel selectors, using an Andair fuel
selector with dual lines that allows selected unused fuel to return to selected
tank like a cycle while other aircraft just return to left tank
912iS Fuel's Life Cycle - CORRECT ANSWERS-2 fuel tanks each located on
each wing, only one tank can be selected at a time
fuel runs through 3 filters before reaching engine
fuel enters right side of engine first then moves to left
20 gallons of fuel runs through the engine and back to its original tank
fuel becomes pressurized after passing fuel pumps
Rotax 912iS Fuel System - CORRECT ANSWERS-1. Fuel goes through initial
strainer into tanks
2. Fuel Selector
3. Gascolator (2nd filter)
4. Pressurized in Fuel Pumps
5. Fine Filter (last one)
6. Bypass Plate if Fine Filter fills up/clogged
7. Into Engine
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