PERFORMANCE (THEORY)

Question 1

According Regulation EU 965/2012, “Performance class B aeroplanes” means aeroplanes powered by (1) ___ engines with a maximum operational passenger seating configuration of (2) ___ and a maximum take-off mass of (3) ___.

(1) propeller, (2) 20 or more, (3) more than 5700 kg
(1) jet engine, (2) 9 or more, (3) more than 5700 kg
(1) jet engine, (2) 20 or more, (3) 5700 kg or less
(1) propeller, (2) nine or less, (3) 5700 kg or less

Answer 1

(1) propeller, (2) nine or less, (3) 5700 kg or less

Question 2

According CS-Definitions, an “area beyond the runway under the control of the airport authority (…) extending from the end of the runway with an upward slope not exceeding 1.25%, above which no object or terrain protrudes” is defined as:

Stopway
Brake area
Runaway ramp
Clearway

Answer 2

Clearway

Question 3

With regard to CS-25 certification requirements for large aeroplanes, which of the following statements is correct?

1. “gross flight path” is the actual flight path demonstrated by the manufacturer with NO safety margins
2. “net flight path” is the actual flight path demonstrated by the manufacturer reduced by safety factor dependent on the number of engines.

1 is incorrect, 2 is incorrect
1 is incorrect, 2 is correct
1 is correct, 2 is correct
1 is correct, 2 is incorrect

Answer 3

1 is correct, 2 is correct

Question 3

With regard to CS-23 and CS-25, the “take-off flight path” (gross flight path) is:

• the actual flight path as demonstrated by the manufacturer reduced by a factor dependent on the number of engines.
• the actual flight path as demonstrated by the manufacturer excluding safety margins.
• the minimum flight path with a gradient an airplane should follow to achieve a minimum obstacle clearance.
• the actual flight path as demonstrated by the manufacturer including safety margins.

Answer 3

• the actual flight path as demonstrated by the manufacturer excluding safety margins.

Question 4

According CS-Definitions, an “an area beyond the take-off runway (…) for use in decelerating the aeroplane during an abortive take-off” is defined as:

Stopway
Brake area
Runaway ramp
Clearway

Answer 4

Stopway

Question 5

According Regulation EU 139/2014, the “Take-off distance available” means…

• the length of the take-off run available plus the length of the clearway, if provided.
• the length of the take-off run available plus the length of the stopway, if provided,
• the length of the active runway distance beyond threshold.
• the distance of the active runway plus the distance to an obstacle of 50 ft height.

Answer 5

• the length of the take-off run available plus the length of the clearway, if provided.

Question 6

The “screen height” for Performance Class A aeroplanes is a reference height of usually (1) ___ with a dry runway, and is measures overhead (2) ___.

(1) 35 ft, (2) Airport Elevation
(1) 15 ft, (2) Reference Zero (RZ)
(1) 15 ft, (2) Airport Elevation
(1) 35 ft, (2) Reference Zero (RZ)

Answer 6

(1) 35 ft, (2) Reference Zero (RZ)

Question 7

Define “Power Required”:

• The power multiplied by airspeed to maintain unaccelerated straight and level flight.
• The power needed to maintain unaccelerated straight and level flight.
• The thrust force needed to maintain unaccelerated straight and level flight.
• The drag divided by airspeed to maintain unaccelerated straight and level flight.

Answer 7

• The power needed to maintain unaccelerated straight and level flight.

Question 8

If aerodrome pressure altitude decreases, the…

take-Off Distance Required increases.
take-Off Distance Required decreases.
accelerate-Stop Distance increases.
take-Off Ground Run increases.

Answer 8

take-Off Distance Required decreases.

Question 9

If atmospheric pressure increases, take-off distance [1] ___ and initial climb performance [2] ___.

[1] decreases [2] increases
[1] decreases [2] decreases
[1] increases [2] increases
[1] increases [2] decreases

Answer 9

[1] decreases [2] increases

Question 10

The pilot of a single engine aeroplane has determined the climb performance.
When carrying an additional passenger in a single-engine aircraft, the climb performance will be…

unaffected
decreased or increased, depending on the take-off path
decreased
increased

Answer 10

decreased

Question 11

Increasing atmospheric pressure will result in…

• increased landing distance and go-around performance.
• decreased landing distance and go-around performance.
• decreased landing distance, increased go-around performance.
• increased landing distance, decreased go-around performance.

Answer 11

decreased landing distance, increased go-around performance.

Question 12

When the actual landing mass is higher than planned, the…

• threshold speed will be higher.
• landing distance remains the same.
• landing distance will be longer.
• approach path will be steeper.

Answer 12

landing distance will be longer.

Question 13

When the outside air temperature increases the…

• climb gradient increases and the rate of climb decreases.
• climb performance is not affected.
• the climb gradient and the rate of climb both decrease.
• climb gradient decreases and the rate of climb increases.

Answer 13

the climb gradient and the rate of climb both decrease.

Question 14

An aeroplane with reciprocating engines flies at a constant angle of attack, mass and configuration.
Should the altitude increase, the power required will…

• increase and the TAS will increase by the same percentage.
• increase but the TAS will not change.
• decrease and the TAS will also decrease.
• not change but the TAS will increase.

Answer 14

increase and the TAS will increase by the same percentage.

Question 15

If the gross mass of a piston engine aeroplane is increased, to keep the angle of attack, configuration and altitude constant…

• an increase in airspeed is required, but power setting should be kept constant.
• a higher drag coefficient is required.
• an increase in power and a decrease in airspeed is required.
• an increase in airspeed and power is required.

Answer 15

• an increase in airspeed and power is required.

Question 16

If the gross mass of a piston-engine aeroplane increases, to keep the angle of attack, configuration and altitude constant, the…

• airspeed must be increased, but the drag must remain the same.
• airspeed must be increased, resulting in increased drag.
• lift/drag ratio must be increased, but the drag must remain the same.
• airspeed must be decreased, resulting in increased drag.

Answer 16

airspeed must be increased, resulting in increased drag.

Question 17

Take-off and initial climb performance can be adversly affected by [1] ___ temperature and [2] ___ relative humidity.

[1] low [2] low
[1] high [2] low
[1] low [2] high
[1] high [2] high

Answer 17

[1] high [2] high

Question 18

Select the correct definition for Density Altitude:

• The altitude read directly from the altimeter.
• Height above ground.
• Airfield Elevation converted to Pressure Altitude, then corrected for ‘Non-standard’ Temperature.
• The altitude reference to the standard datum plane.

Answer 18

Airfield Elevation converted to Pressure Altitude, then corrected for ‘Non-standard’ Temperature.

Question 19

The Angle of Climb with flaps extended, compared to that with flaps retracted, will be…

increased at a small flap setting, and decreased at a large flap setting.
the same.
smaller.
larger.

Answer 19

smaller.

Question 20

Which of the following parameters decrease the take-off ground run?

1. decreasing take-off mass
2. increasing take-off mass
3. increasing density
4. decreasing density
5. increasing flap tilt angle
6. decreasing flap tilt angle
7. increasing pressure altitude
8. decreasing pressure altitude

• 2, 3, 5 and 7
• 1, 3, 5 and 7
• 2, 4, 6 and 8
• 1, 3, 5 and 8

Answer 20

• 1, 3, 5 and 8

Question 21

The diagram which shows the change of the position of the Power Required curve with Altitude (H2 at a greater altitude than H1), is…

D
A
C
B

Answer 21

D

Question 22

Regarding a propeller-driven aeroplane during climb, the power-required at a given IAS will (1) ___ with (2) ___ density altitude.

(1) decrease, (2) any change in
(1) increase, (2) increasing
(1) not change, (2) changing
(1) decrease, (2) increasing

Answer 22

(1) increase, (2) increasing

Question 23

Which sketch correctly illustrates the change in the thrust-required curve with decreasing density altitude?

Sketch A
Sketch B
Sketch D
Sketch C

Answer 23

Sketch B

Question 24

Which sketch correctly illustrates the change in the thrust-required curve with increasing density altitude? Sketch A Sketch B Sketch C Sketch D

Answer 24

Sketch B

Question 25

Regarding straight and level flight at a given speed, drag (1) ___ with (2) ___ aeroplane mass. (1) increases, (2) less (1) does not change, (2) any change in (1) decreases, (2) more (1) increases, (2) increasing

Answer 25

(1) increases, (2) increasing

Question 26

When aircraft mass decreases during unaccelerated horizontal flight, the Minimum Drag [1] ___ and the IAS for the Minimum Drag [2] ___. [1] increases [2] decreases [1] increases [2] increases [1] decreases [2] increases [1] decreases [2] decreases

Answer 26

[1] decreases [2] decreases

Question 27

The correct equation about Specific Range over Ground (SRG) is... SR = TAS / Total Fuel Flow SR = GS / Total Fuel Flow SR = CAS / Total Fuel Flow SR = Mach number / Total Fuel Flow

Answer 27

SR = GS / Total Fuel Flow

Question 28

To maximize Specific Range (or Specific Air Range), the TAS must be (1) ___ and the Fuel Flow must be (2) ___. (1) high, (2) low. (1) low, (2) low. (1) low, (2) high. (1) high, (2) high.

Answer 28

(1) high, (2) low.

Question 29

The correct equation about Specific Air Range (SAR) is: SAR = TAS / Total Fuel Flow SAR = GS / Total Fuel Flow SAR = Mach number / Total Fuel Flow SAR = CAS / Total Fuel Flow

Answer 29

SAR = TAS / Total Fuel Flow

Question 30