Random Questions Flashcards
At what % N2 does the ECY command the FCU fuel solenoid shutoff valve to open? (i.e. introduce fuel?)
7.3% N2
What difference in fuel pressure on either side of the fuel filter triggers a ‘Fuel IMP Bypass’ Caution to be displayed?
4psi
Caution extinguishes below 2psi
What makes up the LP rotary group on the FJ44-4A QPM engines?
Single stage Fan
Three stage axial intermediate pressure compressors
What makes up the HP rotary group on the FJ44-4A QPM engines?
Single stage centrifugal compressor
Why is there a bleed valve between the axial IP compressor and the centrifugal HP compressor?
When is it open and closed?
Axial IP Compressor provides too much flow at low engine rpm so it is scheduled to open during acceleration, deceleration and power settings below 75.2% N2 and close above 77.7% N2