Final Flashcards
Where does the air pass thru in a Centrifugal Compressor?
Diffuser
What is the function and shape of an Air Inlet (Intake) duct?
Divergent, to decrease velocity, increase Pressure and Temperature.
What is the percentage of compression in both Impeller & Diffuser?
50% diffuser & 50% impeller
In an axial flow compressor, the gradual air pressure rises in what ratio?
1.25 : 1 in Pressure
What kind of passage way are form between Adjacent blades / Vanes of the same row in an Axial Compressor?
Divergent between Adjacent blades and the vanes
Which is the length of blades from the LP and to the HP end in the Axial Flow Compressor ?
Longer at the LP end & Shorter at the HP end.
What is the another name for the air passage in an Axial Flow Compressor?
Air Annulars
In the Combustion Chamber, what is the apportion percentage of the airflow between the primary and the dilution zones?
20 % into the Combustion Chamber, the rest to cool the output energy in the Exhaust
What are the three type of Combustion Chambers and their Variations details?
Multiple- Combustion, Turbo- Annular & Annular
What is the function of the turbine blades?
To extract energy of the heat energy from the output of Combustion Chamber.
What are the 3 types of turbine blades?
Impulsion, Reaction & Impulse-reaction.
In the Combined Impluse-Reaction type blades, how is the workload distributed?
Evenly throughout the blade.
In an Impulse-Reaction Turbine Blade, Which section is Impulse and Reaction?
Impulse @ Root end & Reaction @ Tip end.
Where is the Convergent passage when the velocity changes takes place in Impulse and Reaction turbine blades?
Impulse @ Nozzle Guide Vanes (NGV),
Reaction @ Turbine
Which are the 2 turbine blades used for high and low rotation speed?
Opened for Low speed, Shrouded for High Speed.
