Take Off Principles

Question 1

VLOF

Answer 1

Lift off speed when main wheels leave the ground

Question 2

Ground Run + Airborne Section =

Answer 2

Take Off Distance

Question 3

Increase in Mass effect on TO distance

Answer 3

Slower Acceleration
Longer TOD
More Wheel Friction DRAG
Shallower Climb Angle
Bigger distance to screen height

Question 4

Headwind and tailwind components used when determining take off distance

Answer 4

Headwind - 50%
Tailwind - 150%

Question 5

Acceleration during take off run (increase or decrease?)

Answer 5

Decreases due to reducing excess thrust

Question 6

Performance factor applied to 1% of runway slope

Answer 6

5%
1.05

Question 7

Factors increasing T/O distance

Answer 7

Temperature- higher/less dense/less mass flow/reduced thrust
Flap setting
Altitude
Wind
Runway conditions
Runway slope
Bleed air

Question 8

PLTOM

Answer 8

Performance limited take off mass

Lower number of the Climb limit take off mass/runway limited take off mass

Question 9

Factors on ASD

Answer 9

Mass - heavy ac more energy to slow
Runway conditions
Wind - TW
Upslope - slow down faster
Downslope - reduces ASD faster acceleration to VR
Brake temp

Question 10

Headwind/Tailwind component calculations

Answer 10

Wind Speed x Cos0

Question 11

Crosswind component

Answer 11

Wind speed x Sin0

Question 12

Screen height for Class B Aircraft

Answer 12

50ft

Question 13

Ram Effect

Answer 13

Air compression increase density of the air entering the engine increasing the thrust

Question 14

Upslope runway vs downslope runway on ASD

Answer 14

Upslope increase the ASD:
- slower acceleration to vs1

Downslope decrease ASD:
- Faster acceleration to vs1

Question 15

Screen height for class A
Screen height for class B

Answer 15

Class A = 35ft
Class B = 50ft

Question 16

Displacement Drag

Answer 16

Drag resulting from extra effort required to push tyres through the contaminated layer

Question 17

Impingement Drag

Answer 17

Drag caused by the momentum of contaminants which are thrown up onto the landing gear and aeroplane surfaces

Question 18

Flex take off

Answer 18

Assuming a higher temperature into the FMS - lower thrust setting. Full thrust can be applied at any time.

Question 19

De rated thrust take off

Answer 19

Take off thrust less than max using a thrust parameter setting in the AFM. Limited thrust TOGA cannot be selected.

Question 20

Factor for every 1% of upslope safety factor must be applied…

Answer 20

5% for every 1% in upslope of runway

2% - 10%
3% - 15%
4% - 20%

Question 21

Rolling takeoff technique

Answer 21

Aeroplane accelerate slowly as power is applied to engines
Increase the take off distance and longer ASD

Question 22

Height below which turns are not permitted after take off is - Class A/Class B

Answer 22

Class A = 50ft or half wing span whichever is higher
Class B = 50ft