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Flashcards in Exhaust Systems Deck (23)
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1
Q

Name two types of reciprocating engine exhaust systems

A

Short stock and collector system

2
Q

What drawback in using collector type exhaust systems is more than offset when used on turbocharged engines

A

Loss of horsepower due to exhaust system back pressure

3
Q

What could result if the internal baffles or diffusers in an exhaust system fail

A

The flow of the exhaust gasses could be restricted resulting in a loss of engine power

4
Q

What type of exhaust system is used on turbocharged engines

A

Collector system

5
Q

What kind of material is normally used to make muffler shrouds found in the exhaust system

A

Stainless steel

6
Q

How do you inspect internal baffles and diffusers of an exhaust system

A

Disassemble the exhaust system as necessary and visually inspecting the components

7
Q

Why is an exhaust system failure considered a severe hazard

A

It can result in carbon monoxide poisoning, loss of engine power or fire

8
Q

What could happen if lead, zinc, or galvanized marks are made on an exhaust system

A

Can cause a change in the structure which could result in cracks when heated

9
Q

What happens if the heat exchanger leaks exhaust gasses into the induction system

A

There is loss of engine power

10
Q

What is an indication of an exhaust gas leak

A

A flat gray or sooty black deposit in the area of the leak

11
Q

Where are the most common places to find cracks in an exhaust system

A

At welding or clamped areas and at the flanges

12
Q

What is a common cause of turbocharger waste gate sticking

A

Coke deposits or carbon buildup

13
Q

What are exhaust system coke deposits

A

Excessive carbon buildup

14
Q

Why are turbocharged exhaust system leaks very damaging at high altitudes

A

Pressure differential will cause the leaks to escape with torch like intensity

15
Q

What is the result of changing the exhaust nozzle area of a turbine engine

A

engines performance and EGT changes

16
Q

Name the components of a typical turbine exhaust nozzle

A

Tail cone, exhaust ducts and support struts

17
Q

What is the purpose of thrust reversers

A

They help decelerate an aircraft after landing

18
Q

How much thrust do the thrust reversers produce compared to the engines full forward thrust

A

A lot less

19
Q

What are the two most commonly used type of thrust reversers

A

Clamshell and cascade

20
Q

How are ceramic coated exhaust stocks cleaned

A

By degreasing only

21
Q

What are the probes in a turbine exhaust pipe used for

A

measures exhaust gas temperature and pressure

22
Q

What is the purpose of the exhaust system

A

removes high temperature noxious gases

23
Q

How much thrust do the thrust reversers produce compared to the engines full forward thrust

A

A lot less