Engines & Systems

Question 1

What are the three types of fuselages?

Answer 1

Truss type, monocoque, semi-monocoque.

Question 2

What are the two types of”truss types”?

Answer 2

A “warren” and “N” Girder.

Question 3

One purpose of the dual ignition system on an aircraft engine is to provide for…

Answer 3

Improved engine performance.

Question 4

What should be the first action after starting an aircraft engine?

Answer 4

Adjust for proper RPM and check for desired indications on the engine gauges.

Question 5

Which of the three fuselages is the Cessna comprised of?

Answer 5

Semi-monocoque.

Question 6

What is the firewall?

Answer 6

A stainless steel sheet that separates the engine compartment to the rest of the fuselage.

Question 7

What are spars in a wing?

Answer 7

Bars that run from the root to the tip of the wing that carry most of the load in flight.

Question 8

What do ribs do in a wing?

Answer 8

Give shape to a plane, runs front to back.

Question 9

What are the three types of wing construction?

Answer 9

Truss-type, two-spar, web-ring wing.

Question 10

What type of wing support system does a Cessna have?

Answer 10

Semi-cantilever wing.

Question 11

What is the undercarriage?

Answer 11

The part of an aircraft that supports its weight on a surface (ex. landing gear, floats, etc.)

Question 12

What is the purpose of an undercarriage?

Answer 12

To absorb the impact of the aircraft with a surface, and allows for maneuverability of an aircraft on the ground.

Question 13

What are the four classifications of an undercarriage?

Answer 13

Tail dragger, float, tricycle grar and flying boat.

Question 14

What are the three components of a disc brake?

Answer 14

Piston puck, revolving disc, brake pads.

Question 15

What control system is used for the ailerons?

Answer 15

Torque tube.

Question 16

What control system is used for the elevators?

Answer 16

Push/pull rod.

Question 17

What control system is used for the rudder?

Answer 17

Cable & pulley.

Question 18

What are the 5 stresses?

Answer 18

Compression, tension, shearing, bending, torsion.

Question 19

What type of engine layout is in our C172/C152’s?

Answer 19

Horizontally-opposed engines.

Question 20

What is the four-stroke cycle?

Answer 20

Intake, compression, ignition, exhaust. (suck, squeeze, bang, blow)

Question 21

What are the four functions of oil?

Answer 21

cooling, sealing, lubrication, flushing.

Question 22

What is mineral oil for?

Answer 22

No additives, used to break-in engine.

Question 23

What is ashless dispersant?

Answer 23

Suspends contaminants; carbon, lead.

Question 24

What does a turbocharger do?

Answer 24

Uses the energy of hot exhaust gases to power a compressor.

Question 25

What colour of fuel is 80/87 octane?

Answer 25

Red.

Question 26

What colour is 100LL (one-hundred low-lead)?

Answer 26

Blue.

Question 27

What colour fuel is 100 (100/130)?

Answer 27

Green.

Question 28

What colour fuel is Jet A1 fuel?

Answer 28

Clear or straw-coloured,

Question 29

What are the two different sumps?

Answer 29

Dry sump and wet sump.

Question 30

What is pre-ignition?

Answer 30

Combustion that begins before it is intended to, before the regular timed spark.

Question 31

What is detonation?

Answer 31

Occurs when fuel to air mixture is subject to very high temperatures in the cylinder and combusts.

Question 32

What is vapor-lock?

Answer 32

A condition, on warm days, where air enters the fuel system and may be impossible to start an engine.

Question 33

When does carb icing occur?

Answer 33

On high moisture days, -5°C to 30°C.

Question 34

What are the three types of carburetor icing?

Answer 34

Fuel vaporization, throttle ice, impact ice.

Question 35

What does carb heat do?

Answer 35

Prevents ice build up in venturi, but also decreases engine performance.

Question 36

What is the magnetos purpose?

Answer 36

Distributes the current to the spark plugs.

Question 37

What is the magneto's path to the spark plug?

Answer 37

Low, to high, to distributor, to spark plug.

Question 38

What is the main function of a propeller?

Answer 38

To convert torque from the engine into thrust; which pushes air backwards.

Question 39

Why is the propeller torqued?

Answer 39

Because the outer pert of the propeller blade spins faster, while the hub spins slower.

Question 40

What is theoretical (geometric) pitch?

Answer 40

The distance the prop would travel if it was 100% efficient.

Question 41

What is the practical pitch?

Answer 41

The distance the prop actually moves.

Question 42

What is prop slip?

Answer 42

The difference in distance between theoretical and practical pitch.

Question 43

What is coarse pitch?

Answer 43

Large angle (bigger bite of air); slower.

Question 44

What is fine pitch?

Answer 44

Smaller angle (smaller bite of air); faster and less drag.

Question 45

What is the purpose of the ammeter?

Answer 45

To measure the amount of current being used.

Question 46

What are the two types of propellers?

Answer 46

Fixed pitch and variable pitch.

Question 47

What are the three variable pitch types?

Answer 47

Adjustable, controllable, constant speed.

Question 48

What instruments utilize a gyro?

Answer 48

Attitude indicator, heading indicator, and turn coordinator.

Question 49

What items are connected to the vacuum system?

Answer 49

Attitiude and heading indicator.

Question 50

When is carb icing at its worst?

Answer 50

-5°C to 15°C.

Question 51

What is a disadvantages of a carburetor?

Answer 51

Lack of efficiency, float bowl is not suited to negative gravity (upside down), more prone to carb ice.

Question 52

What are advantages of a carburetor?

Answer 52

Easier to start, reliable less maintenance.

Question 53

What are advantages of fuel-injection?

Answer 53

Better efficiency, much more accurate, difficult to start engine due to vapor lock.

Question 54

What are disadvantages of fuel-injection?

Answer 54

Sophisticated and costs much more.

Question 55

Rudder control Aileron Control Elevator control

Answer 55

- Cable & pulley - Torque tube - Push/Pull rod

Question 56

80/87 100LL 100 (100/130) Jet A1

Answer 56

Red Blue Green Clear/Straw

Question 57

What is compression ratio?

Answer 57

The volume in the cylinder between the piston.