A-320 speed brake versus engine anti ice
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Join Date: Feb 2008
Location: lima peru
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A-320 speed brake versus engine anti ice
hi,
the fcom state on the SOP,Descent
SPEEDBRAKES........AS RQRD
In OPEN DES : Use speedbrakes to increase the rate of descent. The pilot may use up to half speedbrakes to maintain the required rate of descent, when engine anti-ice is used.
why is the reason of this statement,I mean, to use of half speedbrake when using engine anti ice?
thanks
the fcom state on the SOP,Descent
SPEEDBRAKES........AS RQRD
In OPEN DES : Use speedbrakes to increase the rate of descent. The pilot may use up to half speedbrakes to maintain the required rate of descent, when engine anti-ice is used.
why is the reason of this statement,I mean, to use of half speedbrake when using engine anti ice?
thanks
Last edited by gmb; 9th Feb 2008 at 21:13. Reason: sintax error
Join Date: Apr 1999
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....because when you have Eng Anti Ice ON the existing Idle Thrust is increased as the bleed air is taken off. More thrust = reduced descent rate on Open Descent, so use 1/2 speedbrake to counter effect of Eng AI being ON
Very general and simplistic, I'm sure more detailed answers to follow!
Very general and simplistic, I'm sure more detailed answers to follow!
