Card Set Information
Jet Engine Theory and Tools and Hardware
What type of fuel nozzle is most widely used in current Navy gas turbine aircraft engines?
Can-type combustion chambers require a flow divider and duplex fuel nozzle to divide the fuel flow between the different combustion chambers.
In the can-type combustion chamber, where are the spark igniter plugs located?
In the two lower chambers
Every turbine engine must have a drain valve to eliminate raw fuel from the combustion chamber after a false start or an engine shutdown.
What is the purpose of the holes in the dome of the can-type combustion chamber liner?
to help atomize fuel
What is the main function of the inlet section of the annular combustion chamber?
To change velocity energy into pressure
The can-annular combustion chamber was specifically designed for use with what type of compressor?
What is one of the advantages of the can-annular combustion chamber design?
Functions in a shorter space
Combustion liner flame tubes provdie which of the following functions?
Flame propagation (spreading)
The preswirl vanes in the can-annular combustion chambers help to..
mix the air and fuel
What section of the jet engine converts velocity energy into mechanical energy?
What is the sole function of the turbine in a turbojet engine?
To drive the compressor and accessories
What is the majority of the energy created in the combustion section used for?
Driving the compressor
What feature is common to all turbojet turbine nozzles?
What kind of turbine rotates from the weight and velocity of air striking its blades?
What difference, if any, is there between a turbine disc and a turbine wheel?
A turbine wheel has blades
Turbine discs are commonly attached to the turbine shaft by which of the following methods?
A blade with a stop on one side of its root and a tang on the other is secured in place by what method?
When the shrouded turbine is compared with an open turbine, the shrouded turbine offers all EXCEPT which of the following advantages?
It requires fewer blades
A turbine stage, like a compressor stage, consists of a row of stationary vanes and a row of rotating blades.
The terms single-rotor turbine and single-stage turbine have the same meaning.
What type of turbine is reuqired for a split-spool compressor?
What is the function of the exhaust section?
To direct hot gas out of the aircraft while increasing velocity and preventing turbulence
What affect does the exhaust cone have on the pressure and velocity of the gases discharged from the turbine?
Pressure is increased and velocity is decreased
Which of the following is an important function of the radial struts in the exhuast cone assembly?
To straighten the exhuast gases
What is the purpose of the small hole in the end of the inner cone of some exhaust systems?
To allow cooling air to enter the cone
Which of the following is a component of a basic jet engine?
Exhaust cone assembly
The velocity of the air is increased in the exhuast section by what jet engine component?
Which of the following types of jet nozzles is used for subsonic velocities?
The size of the exhaust section exit area directly affects the operating temperatures of the engine and the engine performance.
The accessory section provides space for mounting which, if any, of the following types of accessories?
Engine and aircraft accessories necessary for control and operation of the engine.
What is the primary function of the afterburners?
To increase thrust for specific conditions
What maintains normal pressure relationship between air entering the main engine turbine and air leaving the turbine?
What provides local turbulence and reduces velocity?
Which of the following NAVEDTRA manuals is recommended supplemental reading for additional information about the selection, care, and use of tools?
Which of the following is the main purpose of the Tool Control Program?
To provide accountability
Which of the following information is part of every tool control plan?
An allowance list for tool containers?
A standard tool list and layout diagram for each container?
Procurement information for tool containers?
All of the above
What minimum marking(s) should be etched on each tool?
Tool container number, work center, and organization code
Which of the following tools will normally require special accountability under the Tool Control Program (TCP)?
All of the above
Which of the following publications should you consult for policies and procedures for control of hand tools?
OPNAVINST 4790.2 (series)
A maintenance task has been completed and a tool is missing. If that tool cannot be found, what person should sign the VIDS/MAF to indicate the missing tool is NOT in the aircraft?
The person who conducted the investigation
Which of the following tools is NOT considered a common hand tool?
It is important for the face of a striking tool to be free of oil and grease to prevent the...
tool from glancing off the object being hit
Which of the folloiwng is the correct procedure to follow when you use hammers?
grip the hammer near the end with your fingers underneath and your thumb along the side of the handle
What type of hammer has a soft face?
What advantage does a 6-point socket have over a 12-point socket?
It is not subject to as much wear when used on stainless steel nuts
Sockets are classified according to their...
drive size and the size of the opening at the wrench end
The bolt size of sockets is graduated in increments of...
Which of the following socket wrench handles has a reversible feature?
Used for rapidly tightening or loosening nuts or boltsk using a series of partial turns...
Used for rapidly removing nuts that have been loosened first with another wrench...
Used for applying the most leverage to break loose tight nuts, then using the same handle to remove them rapidly...
Which of the following is a commonly used socket wrench accessory that is included in a standard socket set?
Each of the above
What do you gain by using the box end of a combination wrench?
safety under stress
The box-end wrench is usally constructed with...
Why doe the box-end wrench have a 15-degree offset in its handle?
To allow clearance over nearby parts
What is the disadvantage of the box end of a combination wrench?
What advantage is there to using an adjustable wrench instead of a box wrench to tighten or loosen nuts?
An adjustable wrench can be made to fit snugly on odd-sized nuts
When turning a nut with an adjustable wrench, how do you prevent the jaw from springing open?
Pull the handle toward the adjustable jaw
What are the two basic types of screwdriver blades?
Common and crosspoint
The size of a common screwdriver is determined by which of the following features?
The length of the shank
When you remove screws from small subassemblies, it is a good practice to hold the part in your hand with a cloth under it...
The Reed-and-Prince and Phillips screwdrivers are interchangeable crosspoint screwdrivers...