Compressor stall a320
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Joined: Jan 2011
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From: mumbai
Compressor stall a320
Hello, during handling the ecam for eng 1 stall, one of the line states performance permitting XBleed use. I have a questions wrt the use of APU bleed in this situation.
If parameters are not normal we secure the engine and consider eng damage. In case we don't use APU bleed. But if the parameters are within limits with thrust reduced, would it be prudent to use the APU bleed? One could argue that something led to the stall cause of which is unknown in the air so it's safer to avoid using the APU bleed. But what if you are operating at a performance limited rwy?
If parameters are not normal we secure the engine and consider eng damage. In case we don't use APU bleed. But if the parameters are within limits with thrust reduced, would it be prudent to use the APU bleed? One could argue that something led to the stall cause of which is unknown in the air so it's safer to avoid using the APU bleed. But what if you are operating at a performance limited rwy?
Joined: Mar 2006
Posts: 2,633
Likes: 137
From: USA
I’m generally a fan of increased redundancy, so when given the option, I’ll always start the APU if there’s been an engine failure. Why put undue stress on the good engine?
Not following your question on the runway. What’s the APU got to do with your stopping distance?
Not following your question on the runway. What’s the APU got to do with your stopping distance?
Joined: Mar 2012
Posts: 2,605
Likes: 154
From: Having a margarita on the beach
Hello, during handling the ecam for eng 1 stall, one of the line states performance permitting XBleed use. I have a questions wrt the use of APU bleed in this situation.
If parameters are not normal we secure the engine and consider eng damage. In case we don't use APU bleed. But if the parameters are within limits with thrust reduced, would it be prudent to use the APU bleed? One could argue that something led to the stall cause of which is unknown in the air so it's safer to avoid using the APU bleed. But what if you are operating at a performance limited rwy?
If parameters are not normal we secure the engine and consider eng damage. In case we don't use APU bleed. But if the parameters are within limits with thrust reduced, would it be prudent to use the APU bleed? One could argue that something led to the stall cause of which is unknown in the air so it's safer to avoid using the APU bleed. But what if you are operating at a performance limited rwy?
it all depends whether You assess the engine as damaged or not, based on parameter analysis. In case You do, You can switch OFF the Pack on ENG 2 to gain extra performance (1300-1500 kg depends on variant).
Joined: Jun 2007
Posts: 3,443
Likes: 39
From: Wanderlust
But if the parameters are within limits with thrust reduced, would it be prudent to use the APU bleed? One could argue that something led to the stall cause of which is unknown in the air so it's safer to avoid using the APU bleed. But what if you are operating at a performance limited rwy?
