QUIZ Flashcards
Engine Type
4 cylinders
• Horizontally opposed
• Normally aspirated(No turbo charge)
• Air cooled (Engine oil and fuel helps cooling)
• Direct drive(Propeller is attached to the crank shaft directly without any reduction gear or trans- mission)
• Fuel injected
Normally aspirated
(No turbo charge)
Alternate air: Purpose and what happens to RPM
Working as a carburetor heat.
RPM drops slightly when it is open.
Where does the alternate air heat comes?
Heated air around exhaust manifold is directed through the alternate air source.
What does pilot do when he move the prop lever in the cockpit? What will happen to governor?
It change the tension of the speeder spring.
High tension requires more centrifugal force on the fly weight.
It increase the RPM.
Low tension requires less centrifugal force on the fly weight. It decrease the RPM.
Where is the oil from? for the prop
Engine oil reservoir at the bottom of the engine.
What will happen if you lose engine oil completely?
It become high pitch. Moves toward feathering.
Will the prop feather when you shut down the engine after landing? Can you feather the prop when engine is not running?
No. There is anti-feather lock pin which prevent the prop from feathering below, 800RPM.
When the RPM is high, the pin hide inside sleeve due to centrifugal force.
When the RPM is low, the spring push out the pin to stop the movement of the prop.
How many fuel pumps are there?
What drives fuel pumps?
- Each engine has engine driven fuel pump and electrical fuel pump.
How many fuel gauges are there?
Three. Fuel quantity gauges. Fuel pressure gauges. Furl flow gauges
What is the purpose of cross feed?
To balance the weight laterally when one engine is inoperative. For longer range/endurance.
How can you make sure you have correct fuel? Color.
100 is green. 100 LL is blue.
Landing Gear System, How does it work?
It is electrical-hydraulic system.
Pilot can select the position(up/down) by the gear handle.
The electrical motor rotate the hydraulic pump which send the hydraulic fluid from reservoir to three actuators.
The fluid move the piston in each actuators to move the push-pull rod which are connected to the landing gears.
Each gear (Left, right main and the nose) has up limit and down limit switches
When all three up limit switches are pressed, red unsafe warning light will be off and pump will stop.
Also, there is a hydraulic pressure switch. When the gear is up and hydraulic pressure inside reaches certain amount, it disconnect the circuit and the pump will stop.
When the hydraulic pressure decrease, pressure switch activate the motor to pump the hydraulic fluid. The pressure switch and the up limit switch is in the se- rial connection so either pressure reaches the set amount or all three up limit switches are pressed the pump will stop.
When all three down limit switches are pressed, pump will stop and green lights are turned on.
What is the color of the hydraulic fluid?
Red.
What will happen in the case of loss of hydraulic fluid?
The gear will drop by gravity and spring.
Is there anything to tell you the position of the nose gear?
There is a mirror on the left cowling to check nose gear position
Is there any system which warns you when you forget to extend the gear for a landing?
There is warning horn.
When the throttle is reduced(14”) with gear up, it beeps.
When the flap is ex- tended at 25 or 40 degree with gear up, it beeps.
It beeps on the ground when the gear handle is up.
What makes gear down when you use manual extension system?
It release the hydraulic pressure. The gravity and the spring pulls gear down.
How many voltage regulators are there?
Two. Each alternator has its own voltage regulator.
What is happening if you see over voltage warning light?
Over voltage relay shut down the alternator field as a result of over voltage caused by spike or voltage regulator failure. Recycle the master switch and/or alternator.
How can you make sure one of the alternators is working or not?
Turn off the alternator one at a time. If the other load increase, the alternator you turned off was work- ing.
What is bus bar? Location?
Bus bar is a piece of metal used for the distribution of the electricity. It simplify the wiring. It is lo- cated behind the circuit breakers.
How can you detect the alternator failure? What would you do then?
One or both load meters indicate zero.
If only one indicates zero, turn off the other one to make sure it is working.
If both indicate zero, check master switch on, circuit breaker, recycle alternator.
If it still indicate zero, turn off the master switch to conserve the battery.
Also alternator warning light on.
