Finals

Question 1

The addition of a ______________capability has improved the aircraft handling to the extent
that landing a modern aircraft on a wet and/or icy runway in crosswind conditions is relatively straight forward.

Answer 1

Reverse thrust

Question 2

The usual method of operating
the reverse thrust system is to
select it immediately as the
weight of the aircraft is firmly
on the ___________.

Answer 2

main wheels

Question 3

Three basic thrust reversal system

Answer 3

1. Clamshell doors
2. Bucket Doors ( External Doors)
3. Blocker doors

Question 4

The ___________ reverse the direction of the gas flow. thereby reversing the thrust.

Answer 4

reversing system

Question 5

The name “____________ “ has been applied to this system of reverse thrust because of the shape of the reverser doors, which resembles that of a clamshell.

Answer 5

Clamhell

Question 6

In the system of clamshell doors, the reverser doors are “_____________” operated and uses _________________________ as its power source

Answer 6

Pneumatically
high pressure compressor air

Question 7

these moves the reverser doors (Clamshell doors) from Stowed position and deployed position.

Answer 7

Pneumatic rams

Question 8

Stowed Position:_______________
Deployed Position: ___________________

Answer 8

Forward Thrust
Reverse Thrust

Question 9

In a stowed position of clamshell doors, clamshell doors cover “________________” which are revealed when the doors move the deployed state

Answer 9

Cascade vanes

Question 10

While deployed, the clamshell doors shut off the “________________”, forcing the gas to escape through the “___________________” in a forward direction, so that the forward motion of the aircraft is opposed by the reverse thrust generated

Answer 10

Normal exhaust gas exit
cascade vanes

Question 11

For Clamshell Doors:

The “________________” are
aiming the exhaust mainly in a
“_______________” direction, but they are
angled so that the exhaust
also has an ___________________ which minimizes
the chances of debris and hot
gases being re-ingested into
the engine intake during the
use of reverse thrust.

Answer 11

lower cascade vanes
forward
outboard angular component

Question 12

Why lower cascade vanes are angled?

Answer 12

1. So that exhaust also has an outboard angular component, minimizing the chances of debris .
2. Hot gases being re-ingested into the engine intake during the use of reverse thrust.

Question 13

The ‘Bucket Reverser’ system is
normally “_______________”
operated.

Answer 13

hydraulically

Question 14

In bucket reverser: The rear portion of the engine exhaust pipe is shaped like “______________”,
hinged to enable them to
swing “______________” when
selected, deflecting the
exhaust gas forward.

Answer 14

two halves of a bottomless bucket

rearwards

Question 15

Other term of blocker system

Answer 15

cold stream reverser

Question 16

These type of reverser is only used on high bypass ratio fan jet engine

Answer 16

blocker reverser