Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
43 Cards in this Set
- Front
- Back
|
What is a indication that a primer is leaking or is Open during engien operation? |
Engien will not idle properly |
|
|
Mejor components of a Gas turbine |
Combustion, Compressor, Air inlet, Turbine, accesory box, Exhaust |
|
|
What prevents burning of combustion chambers? |
cooling air along the inside of the liner |
|
|
What is the function of a axial flow turbine nozzle ? |
They prepare the airflow to drive the turbine rotor and deflect the gases to a specific angle |
|
|
What are some ways of relieving thermal stress on a turbine disk ? |
By using bleed air on the face of the disk and grooving the turbine disk |
|
|
What are carbon seals used for in turbine engines ? |
Oil seals for rotor shaft bearings |
|
|
What may be a indication of a turbojet or turbo fan is out of trim? |
The engien has high EGT at target engien pressure ratio for takeoff power |
|
|
What could be the cause for a turbojet or turbo fan engien to have a high EGT, low RPM and high fuel flow at all engien pressure ratio settings? |
Possible turbine damage or loss of turbine efficiency |
|
|
What is a Fan blade Shingling? |
Is the Overlapping of the mind span shrouds of the fan blades |
|
|
What items must be included on a operational check of a recip engien prior to approval for return to service after a 100-hour inspection? |
Power output, Magnetos, Fuel and Oil pressure, Cylinder and oil temperature |
|
|
Where is the location of the carburetor air temperature bulb? |
In the Ram air intake duct. |
|
|
Basic components of a engien fuel flow system? |
transmitter Indicator |
|
|
What directly controls manifold pressure? |
Engien RPM Throttle opening |
|
|
What does EGT indicate ? |
temperature of turbine discharge gases |
|
|
How is turbine engien EGT obtained ? |
By thermocuoples installed near the turbine exit |
|
|
Principle operation of a kidde continuous loop fire protection system? |
2 wires imbedded in a ceramic core one wire is connected to GROUNDand the other wire is a HOT LEAD that provides CURRENT when the ceramic cores resistance increses due to temperature increase |
|
|
Operation of a fenwall continuos loop ? |
single nickel wire surrounded by EUTECTIC SALT and resistance lowers due tu temperature rise |
|
|
What are the components of a direct cranking electric starter system ? |
Electric Motor Reduction Gear Automatic Engaging and Desingaging mechanism |
|
|
Major components of a D.C motor ? |
Armature Brush Field Frame |
|
|
What is used to control D.C generator Voltage ? |
Field Current Strength |
|
|
2 methods that are used to maintain 400 Hertz alternator output frequency? |
Constant Speed drives Intergrated drive generators |
|
|
3 major components of a turbine engien ignition system ? |
Ignition Exciters High tension leads Igniters |
|
|
How is a heavily loaded APU, approaching its maximum exhaust EGT prevented from overheating? |
By using load control valve that regulates the pneumatic load to maintain safe operating temperature |
|
|
What are the 2 criteria used by manufacturers to determine the amount of bend damage that can be repaired by cold bending of aluminum prop? |
Blade Station Location Extent of the Bend |
|
|
When engien vibration is reported what should be checked to determine if it is caused by the engien or propeller? |
Blade angle setting Blade tracking |
|
|
What is the purpose of a pressurizing portion of a pressurizing and dump valve? |
To provide primary and secondary fuel flow to duplex fuel nozzles |
|
|
What is the purpose of a fuel boost pumps? |
to supply fuel under pressure to engien fuel pump |
|
|
What are the 3 units of a recip engien induction system |
Carburator or Fuel injection system Air scoop intake manifold |
|
|
What effect does a engien have when induction system icing occurs? |
Los of engien power erratic operation |
|
|
What may may be a indication of leaking intake pipes? |
Engien runs rough |
|
|
What point does internally driven supercharger boost air pressure ? |
an the impeller compresses fuel air moisture after it leaves the carburator |
|
|
from where does externally driven supercharger boost its power? |
From engien exhaust gases directed againts in some form of turbine |
|
|
How is divergent shaped jet engien affect the air flowing at subsonic speed ? |
Causing decrease in air velocity and a increse in air pressure |
|
|
Function of a sonic venturi in a turbocharger? |
limits the amount of turbocharge airflow used for cabin pressurization |
|
|
3 reason that excessive heat is undesirable in a recip engien |
Affects combustion Weakens and shortens the life of engien parts affects lubrication |
|
|
What is the function of engien cowling and baffles ? |
To direct airflow over the cylinders for cooling |
|
|
What is the fucntion of engien cowling? |
streamlines engien area to reduce drag and forms a envelope around the engien to aid controlling cooling airflow |
|
|
Purpose of cowl air seals ? |
the force air to circulate around and through the baffle system |
|
|
Where is the most cooling air needed to cool a turbine engien ? |
inside the engien |
|
|
What is a augmentor? |
is a exhaust system that uses existing exhaust gas velocity to produce a venturi effect to draw more airflow over the engien |
|
|
What is a indication of exhaust gas leak? |
flat gray and sooty black deposits in the leak area |
|
|
Components of turbine exhaust nozzle? |
Tail cone Exhaust duct support struts |
|
|
2 criteria to determine the amount of bend damage that can be repaired? |
Blade station location extent of the bend |
