Exhaust And Reverser Systems Flashcards
Types of exhaust stacks:
1) Short stack
2) Bayonet stack
T/F
Mechanics are not allowed to weld exhaust stacks.
True
Hardware springs are used for what purpose?
1) Absorb expansion
2) Compensate for misalignment.
Signs of exhaust leaks:
1) Soot
2) Corrosion
3) Cracking
What must be done to check exhaust for cracks?
Remove the shroud
The _______ increases the cooling airflow through the engine and decreases exhaust back pressure.
Augmentor tube
The augmentor tube does what?
Draws cooling air into the cowling and through the cylinder fins and decreases exhaust pipe pressure.
Used to reduce exhaust noise levels on a recip engine:
Muffler
The pressure in the exhaust system that opposes the flow of exhaust gases being forced out of the cylinders:
Exhaust back pressure
A component that encircles a radial engine and collects exhaust gases from each cylinder:
Collector ring
Flexible ducting that connects the carburetor heat muff to different components:
SCAT ducting
_____% of heat energy is useful work and _____% is lost out of the exhaust.
31%
51%
Systems designed to recover energy lost to the exhaust:
1) Power recovery turbine
2) Turbocharger
Types of joints that allow turbocharger components to move but don’t allow leakage.
1) Ball joints
2) Slip joints
3) Metal bellows
Joints mounted with spring hardware should be assembled in what orientation?
Spring between the nut and the joint flange.
One type of Power Recovery Turbine:
Turbo-compound engine
Two uses for heat taken from the exhaust gases:
1) Carb heat
2) Cabin heat
The exhaust cone is considered a/an _______ component.
Engine
Three major components of a turbine exhaust system:
1) Exhaust cone
2) Duct/pipe
3) Nozzle
The purpose of the turbine exhaust system is to ________ the stream of gases.
Straighten and accelerate
Types of thrust reversers:
1) Clamshell
2) Cascade vanes
Airframe component that replaces the turbine engine tailpipe to reduce exhaust noise level:
Sound suppressor
Sound suppressors work by _______.
Breaking the normal exhaust stream into a number of smaller streams.
A cascade thrust reverser is often called a _________.
Aerodynamic blockage reverser.
A clamshell reverser is often called a:
Mechanical blockage reverser
The most common type of exhaust duct on a small turbojet and turbofan engine is ______
Convergent
The exhaust cone does what?
Collects and straightens exhaust gases
A convergent exhaust duct is considered to be ________.
Choked
Uses for thrust reversers:
1) Reverse
2) Steep descent
3) Slow down
4) Taxiing
Types of augmented exhaust:
1) Afterburner
2) Vectored exhaust
