Aircraft Systems 2

Question 1

When you turn the ignition OFF and engine continues to run. is this normal?

Answer 1

No. should not happen. Most likely the ground wire is disconnected or broken.

Question 2

What happens is the ground wire is broken or disconnected?

Answer 2

Engine could start with he residual fuel

Question 3

If the engine Strats with residual fuel, how can you shut it off?

Answer 3

mixture level to idle cut off

Question 4

Leaving the carburetor on during the talk off will

Answer 4

increase the ground roll. Because the air going into the mixture is less dense.

Question 5

When carburetor is iced, what will happen next?

Answer 5

1) Apply the carburetor heat
2) RPM will be reduced and increased as the ice melts.
3) If there is no ice, RPM will drop and remain constant.

Question 6

How can you detect if the magneto is broken or not?

Answer 6

idle the engine and momentarily turn the ignition off

Question 7

Fouling of spurs plugs is more apt to occur if the aircraft

Answer 7

climbing into less dense air without adjustment of mixture setting

Question 8

When you climb, how come do you have richer mixture?

Answer 8

High altitude, air becomes less dense

Question 9

What is constant speed propeller?

Answer 9

Pitch of the blades are varied by a governor to maintain constant RPM

Question 10

What type of the propeller is the most efficient?

Answer 10

Constant speed propeller

Question 11

What are the two controls for the constant speed propellers?

Answer 11

1) throttle

2) Propeller control

Question 12

What the are jobs of the

1) throttle
2) Propeller control

for the constant speed propeller?

Answer 12

Throttle controls the power output
Propellers controls the engine RPM

ONCE a SPECIFIC RPM IS SELECTED, A GOVERNOR AUTOMATICALLY ADJUSTS THE PROPELLER BLADE

Question 13

For the constant speed propellers, step to prevent stress on the engine

Answer 13

decrease the manifold pressure before decreasing RPM

Question 14

For any given RPM, there is a _______________ that should not be exceeded.

Answer 14

Manifold Pressure

Question 15

What is the order when you want to make power adjustments?

Answer 15

1) When power is decreased, reduce the manifold pressure before reducing the RPM
2) When power is increase, reverse the order. increase the RPM first and then manifold pressure

Question 16

When does the detonation may occur at high-power settings ?

Answer 16

the fuel mixture ignites instantaneously instead of boring progressively and evenly

Question 17

Detonation can be caused by

Answer 17

using a lower grade of fuel than recommended

Question 18

The uncontrolled firing of the fuel/air charge in advance of normal spark ignition is known as

Answer 18

preignition

Question 19

Fuel/air ratio is the ratio between the

Answer 19

weight of fuel and weight of air entering the cylinder.

Question 20

The mixture control sac be adjusted which

Answer 20

prevent the fuel/air combination from becoming too rich at higher altitudes

Question 21

Propeller efficiency is the

Answer 21

ratio of thrust horsepower to brake horsepower

Question 22

A fixed-pitch propeller is designed for best efficiency only at a given combination of

Answer 22

airspeed and RPM.

Question 23

The main reason for the variations in geometric pitch (twisting) along a propeller blade is to

Answer 23

produce uniform lift from the hub to the tip

Question 24

A detuning of engine crankshaft counterweights is a source of over stress that may be caused by

Answer 24

rapid opening and closing of the throttle

Question 25

The Best power mixture is that fuel/air ratio at which

Answer 25

the most power can be obtained for any given throttle setting

Question 26

What effect, if any, would a change in ambient temperature or air density have on gas turbine
engine performance?

Answer 26

As temperature increase s, thrust decreases

Question 27

Applying carburetor heat will

Answer 27

enrich the fuel/air mixture

Question 28

High oil temperature that exceeds normal operating limits could indicate

Answer 28

Low oil quantity

Question 29

What will occur if no leaning is made with the mixture control as the flight altitude increases

Answer 29

The density of air entering the carburetor decreases and the amount of fuel remains constant

Question 30

Unless adjusted, the fuel/air mixture becomes richer with an increase in altitude because the amount fuel?

Answer 30

Remains constant while the density of air decreases

Question 31

If you fail to adjust to the proper fuel-air mixture In an aircraft powered by a normally aspirated engine, after climb to a higher altitude, the result is

Answer 31

An excessive fuel flow that fails to compensate for decreased air density

Question 32

At high altitude, an excessively rich mixture will cause the

Answer 32

Fouling sprak plugs

Question 33

Frequent inspections should be made of aircraft exhaust manifold-type heating systems to
minimize the possibility of

Answer 33

exhaust gases leaking into the cockpit

Question 34

To establish a climb, after take off, in an aircraft equipped with a constant-speed propeller, the output of the engine is reduced to climb power by decreasing manifold pressure and

Answer 34

decreasing RPM by increasing propeller blade angle.

Question 35

To develop maximum power and thrust, a constant-speed propeller should be set to a blade
angle that will produce a

Answer 35

small angle of attack and high RPM.

Question 36

For takeoff, the blade angle of a controllable-pitch propeller should be set at a

Answer 36

small angle of attack and high RPM.

Question 37

During pre-flight in cold weather, crankcase breather lines should receive special attention
because they are susceptible to being clogged by

Answer 37

Ice from crankcase vapors that have condensed and subsequently frozen.

Question 38

In an aircraft with a constant speed propeller, a decrease in a manifold pressure will

Answer 38

Cause the governor to decrease the propeller pitch to maintain engine and propeller RPM

Question 39

If a pilot notices a cylinder head temperature rising above the normal limits, what are some of the
methods to lower the temperature to normal operating limits?

Answer 39

Increase airspeed, enrich fuel/air mixture, and/or reduce engine speed