Aircraft Systems Pt. 3

Question 1

The oil is located in a sump that is an integral part of the engine

Answer 1

Wet-sump system

Question 2

The oil is contained in a separate tank and circulated through the engine by pumps

Answer 2

Dry-sump system

Question 3

This draws oil from the sump and routes it to the engine

Answer 3

Oil pump

Question 4

State the oil system components

Answer 4

• Oil pump
• Oil sump
• Oil Screens and Filters
• Oil Cooler
• Oil Pressure and Temperature Gauges

Question 5

The pump draws oil from the sump and routes it to the engine

Answer 5

Wet-sump system oil pump

Question 6

After oil is routed through the engine, it is pumped from the various locations in the engine back to the oil tank by scavenge pumps

Answer 6

Dry-sump system oil pump

Question 7

This is a metal dish which covers the bottom of the engine block, and holds the engine oil when it is not circulating around the engine. Oil for engine lubrication is supplied from here on the bottom of the engine

Answer 7

Oil Sump

Question 8

They act as guards to catch contaminants in the oil

Answer 8

Oil Screens and Filters

Question 9

The purpose of this is to allow the engine’s cooling system to remove excess heat from the oil

Answer 9

Oil Cooler

Question 10

This provides a direct indication of the oil system operation. It ensures the pressure in pounds per square inch (PSI) of the oil supplied to the engine

Answer 10

Oil pressure gauge

Question 11

This measures the temperature of oil

Answer 11

Oil temperature gauge

Question 12

A green area shows the normal operating range, and the red line indicates the ________________________

Answer 12

maximum allowable temperature

Question 13

This may mean improper oil viscosity during cold weather operations

Answer 13

Low oil temperature

Question 14

This may signal a clogged oil line, a low oil quantity, a blocked oil cooler, or a defective temperature gauge

Answer 14

High oil temperature

Question 15

This provides information about the correct oil type and weight, as well as the minimum and maximum oil quantity

Answer 15

POH

Question 16

Most aircraft are equipped with either a _____________________________ electrical system

Answer 16

14 or a 28-volt direct current (DC)

Question 17

They supply electric current to the electrical system. They also maintain a sufficient electrical charge in the battery

Answer 17

Engine-driven alternators

Question 18

These produce sufficient current to operate the entire electrical system, even at slower engine speeds, by producing alternating current (AC), which is converted to DC.

Answer 18

Alternators

Question 19

What does GPU stand for?

Answer 19

ground power unit

Question 20

State the eight basic aircraft electrical system components

Answer 20

• Alternator/Generator
• Battery
• Master/ Battery Switch
• Alternator/Generator Switch
• Bus bar, Fuses, and Circuit Breakers
• Voltage Regulator
• Ammeter/Load-meter
• Associated electrical wiring

Question 21

Turning this to the ON position provides electrical energy to all the electrical equipment circuits except the ignition system

Answer 21

Master Switch

Question 22

This generator electric current based on the principle of magnetic induction

Answer 22

Alternator

Question 23

Electrical energy stored here provides a source of electrical power for starting the engine and a limited supply of electrical power for use in the event the alternator or generator fails

Answer 23

Battery

Question 24

Alternators have an electromagnet called a ________ that spins inside multiple windings of a conductor called a _________.

Answer 24

rotor, stator

Question 25

This is used as a terminal in the aircraft electrical system to connect the main electrical system to the equipment using electricity as a source of power

Answer 25

Bus Bar

Question 26

This simplifies the wiring system and provides a common point from which voltage can be distributed throughout the system

Answer 26

Bus Bar

Question 27

These are used in the electrical system to protect the circuits and equipment from electrical overload

Answer 27

Fuses or circuit breakers

Question 28

These have the same function as a fuse but can be manually reset, rather than replaced, if an overload condition occurs in the electrical system

Answer 28

Circuit breakers

Question 29

This is used to monitor the performance of the aircraft electrical system. This shows if the alternator/ generator is producing an adequate supply of electrical power

Answer 29

Ammeter

Question 30

These are designed with a zero point in the center of the face and a negative or positive indication on either side

Answer 30

Ammeters

Question 31

This type of gauge has a scale beginning with zero and shows the load being placed on the alternator/generator. This reflects the total percentage of the load placed on the generating capacity of the electrical system by the electrical accessories and battery

Answer 31

Loadmeter

Question 32

This controls the rate of charge to the battery by stabilizing the generator or alternator electrical output

Answer 32

Voltage regulator

Question 33

This controls power to all circuits, except the ignition system, clock, and flight hour recorder (recorded through an oil pressure switch)

Answer 33

Master switch

Question 34

This is a rotating airfoil, subject to induced drag, stalls, and other aerodynamic principles that apply to any airfoil. It provides the necessary thrust to pull, or in some cases push, the aircraft through the air

Answer 34

Propeller

Question 35

True or False. The highest pitch is at the hub while the smallest pitch is at the tip.

Answer 35

True

Question 36

This is a propeller with fixed blade angles and the pitch of this propeller is set by the manufacturer and cannot be changed

Answer 36

Fixed-Pitch Propeller

Question 37

State the two types of fixed-pitch propellers

Answer 37

Climb and Cruise

Question 38

This has a lower pitch, therefore less drag. Less drag results in higher RPM and more horsepower capability, which increases performance during takeoffs and climbs but decreases performance during cruising flight

Answer 38

Climb

Question 39

This has a higher pitch, therefore more drag. More drag results in lower RPM and less horsepower capability, which decreases performance during takeoffs and climbs but increases efficiency during cruising flight

Answer 39

Cruise

Question 40

This is the indicator of engine power. This calibrated in hundreds of RPM and gives a direct indication of the engine and propeller RPM.

Answer 40

Tachometer

Question 41

This serves to attach the blades to the engine crankshaft

Answer 41

Propeller hub

Question 42

This covers and protects the propeller hub, which in turn enhances aircraft appearance. This reduce drag by streamlining airflow which in turn provides improve engine cooling

Answer 42

Propeller spinner

Question 43

The two types of cooling

Answer 43

Air Cooled and Liquid Cooled

Question 44

What does CHT stand for?

Answer 44

Cylinder-head temperature gauge