Week 12 (Thrust Reversers)

Question 1

PURPOSE OF EXHAUST SECTION

Answer 1

is to straighten the flow of the hot gases and accelerate the flow of the hot gases for Thrust (action – reaction principle)

Question 2

components that make up the exhaust system

Answer 2

Cone Assembly
Duct
Nozzle

Question 3

What component in the exhaust collects the turbine discharge gases and deliver them to the exhaust duct as a single jet?

Answer 3

Exhaust Cone Assembly

Question 4

also called a jet pipe, tail pipe and Exhaust Pipe

Answer 4

Exhaust duct

Question 5

What component in the exhaust provides the exhaust gases with a final boost in velocity to produce maximum thrust, without causing engine (turbine) over temperature?

Answer 5

Exhaust Nozzle

Question 6

Types of Exhaust Nozzle

Answer 6

Convergent, Convergent-Divergent (C-D), and Divergent

Question 7

What Type of Nozzle is used for subsonic aircraft and also known as a “choked” nozzle?

Answer 7

Convergent

Question 8

What Type of Nozzle is used for supersonic jets?

Answer 8

Convergent-Divergent (C-D)

Question 9

What Type of Nozzle is commonly installed on helicopters?

Answer 9

Divergent

Question 10

the Exhaust Section also houses what?

Answer 10

Thrust Reverser assembly
Afterburners
Thrust Vectoring system
Noise Suppression system

Question 11

are used to slow the aircraft down on landing and during a rejected takeoff (RTO) (along with brakes and spoilers)

Answer 11

Thrust Reversers (T/R)

Question 12

3 Types of Thrust Reversers

Answer 12

BUCKET DOOR Reversers
CLAMSHELL DOOR Reversers
CASCADE or DEFLECTOR DOOR Reversers

Question 13

What type of reversers are mounted externally on turbojet and low bypass engines where two buckets are normally stowed when engine is in forward thrust mode (not in reverse thrust)

Answer 13

Bucket Door Reversers

Question 14

What type of reverser is similar to the bucket type but are installed forward of exhaust nozzle assembly inside the exhaust duct

Answer 14

Clamshell Door Reversers

Question 15

What type of reverser re-directs the cold air stream forward and installed forward of exhaust nozzle assembly inside the exhaust duct

Answer 15

Cascade Type Reversers

Question 16

What is used on STOVL (short takeoff and vertical landing) and primarily on military aircraft

Answer 16

Vectored Thrust

Question 17

reverse thrust is selected by the flight crew on the throttle quadrant but will only deploy when the aircraft is on?

Answer 17

Ground

Question 18

Which device prevents the Engine Throttle Levers from moving in the Thrust Reverser system?

Answer 18

Interlock Mechanism

Question 19

it is essentially a ramjet attached to the exhaust of a turbojet or turbofan engine, called an augmentor when used on turbofans and is used on military jets.

Answer 19

Afterburners

Question 20

Types of Exhaust Nozzle Noise Suppression

Answer 20

Corrugated Perimeter
Lobe
Suppressor

Question 21

are commonly installed on older engines to reduce noise

Answer 21

Hush Kits