Gas Turbine Air Inlets Flashcards
1
Q
Ideal properties of delivered air
A
Airflow to engine should be free of turbulence
Airflow into the compressor should be of uniform pressure, evenly distributed over the inlet area.
Air delivered should be of minimum energy loss and drag.
2
Q
Operational concerns regarding subsonic air inlet
A
FOD, inlet icing, inlet damage, flow separation, turbulence.
3
Q
What is the venturi throat heated with to prevent icing?
A
Bleed Air
4
Q
Effect of Crosswinds
A
Inlet instability - EPR settings may fluctuate due to disturbed airflow at P1 probe.
5
Q
Low Airspeeds + High Power
A
Air entering inlet my approach Mach 1. Inlet Choked.
6
Q
High Speeds
A
Excess air will spill over the lip, and above M0.85 shockwaves form as air accelerates.
