Descent and Landing

Question 1

The glide angle is most shallow (best glide angle) where … is a minimum, or when … is a maximum, found at what speed?

Answer 1

Cd/Cl

Cl/Cd

Vmd (drag to lift minimum, lift to drag maximum)

Question 2

The formula for descent angle (…) tells us that the glide angle is independent of … provided the aircraft is always glided at …

Answer 2

Sin theta = Cd/Cl or sin theta = drag/lift

aircraft weight

Vmd

(however, a heavier aircraft will have a higher value of Vmd so must fly faster to achieve the same descent angle)

Time spent in the glide will be less as the aircraft is flying faster down the same glidepath, and the rate of descent will be higher at the higher weight

Question 3

Glide angle is effectively … so an increase in … alone will improve (decrease) it and an increase in … alone will increase it

Answer 3

drag/lift

lift

drag

(Flying at a faster or slower IAS than Vmd will also lead to steeper glide angles due to increased drag)

Question 4

driftdown is flown at what speed?

Answer 4

Vx

Question 5

max endurance in a glide is found where … is minimum

There will be no power available, there is nothing you can do about the weight so the only thing we can adjust is the …

so what speed to glide for endurance

Answer 5

rate of descent

power required

Question 6

a missed approach is also called an …

defined as go around from at or above DH with …

gear …

flap setting …

Answer 6

approach climb

one engine inop

retracted

approach flap set

Question 7

a baulked landing is also called …

defined as a go around from …

config is GA thrust on …

gear …

flap setting …

Answer 7

landing climb

below DH

all engines

extended

landinf flap set

Question 8

at Vmcl there must be sufficient lateral control to roll the aeroplane away from the … engine through an angle of … degrees in less than … seconds when starting from a straight flight condition

Answer 8

failed

20

5

Question 9

landing Screen height may be reduced to …ft for …

Answer 9

35ft

steep approaches

Question 10

Failure of anti-skid can add 50% to the LDR

Question 11

when landing on a wet runway add a factor of … to the calculated LDR

Answer 11

1.15 (15%)

Question 12

reverse thrust is only considered when landing on … runways

Answer 12

wet or contaminated

Question 13

Vref is based on a function of …

min Vref for class A =

min Vref for class B =

and not less than …

Answer 13

stall speed

1. 23 Vrs0
2. 3 Vs0

Vmcl

Question 14

Class A must land and stop within …% of the LDA (which is a factor of)

Turboprops and Class B must land and stop within …% of the LDA (which is a factor of)

Answer 14

60 (1.67)

70% (1.43)

Question 15

short landing ops only approved for aeroplanes where the vertical distance between the path of the pilot’s eye and the path of the lowest part of the wheels, when on normal glide path, does not exceed …

Visibility/RVR must not be less than …

Assumed that the screen height over the beginning of the useable length of the declared safe area is 50ft (aircraft will be lower over the threshold)

Answer 15

3 metres

1500m

Question 16

For the purpose of short landing ops, the distance used for the calculation of the permitted landing mass may consist of the useable length of the declared safe area plus the declared landing distance available

Declared safe area must not exceed … in length

Safe area shall not be less than … runway width or twice …, whichever is greatest

Safe area must be clear of obstructions

Safe area slope must not exceed 5% upward or 2% downward in the direction of landing

Answer 16

90m

twice

the wing span