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-   -   A320 Single Engine Missed Approach (https://www.pprune.org/tech-log/652043-a320-single-engine-missed-approach.html)

JABBARA 29th Apr 2023 19:34

Thank you Sonicbum


Hi JABBARA

it must be a typo but the LCG is never limiting. Probably You meant ACG
You are right I mistakenly wrote LCG, I corrected it as ACG (Approach Climb Gradient)



Flysmart does have an option to select the required GA gradient and the target altitude until it is required. In that case I believe the results do take care of varying conditions as you have detailed.
That is right if available,
In our FSA there was no such a calculation
The only one on FSA was based on to meet requirement as in EASA CS 25.121 Climb: one-engine-inoperative (d) (1),
If the entered landing weight for given landing condition (including selected CONF) was too much to be able to meet a momentary 2.1 % with single engine + APP Flap + L/G UP, further landing parameters are not calculated.

However the way you describe is not clear for me, if you enter a standart Missed approach gradient (2.5%) up to 4000 from SL GA, what does it calculate?
Does FSA calculates a max weight, so that at given conditions, when airplane reaches 4000 feet, reducing gradient as ascending finally hits down to to 2.5% ?

sonicbum 29th Apr 2023 20:50


Originally Posted by JABBARA (Post 11427704)
Thank you Sonicbum


You are right I mistakenly wrote LCG, I corrected it as ACG (Approach Climb Gradient)



That is right if available,
In our FSA there was no such a calculation
The only one on FSA was based on to meet requirement as in EASA CS 25.121 Climb: one-engine-inoperative (d) (1),
If the entered landing weight for given landing condition (including selected CONF) was too much to be able to meet a momentary 2.1 % with single engine +GA Flap + L/G UP, further landing parameters are not calculated.

However the way you describe is not clear for me, if you enter a standart Missed approach gradient (2.5%) up to 4000 from SL GA, what does it calculate?
Does FSA calculates a max weight, so that at given conditions, when airplane reaches 4000 feet, reducing gradient as ascending finally hits down to to 2.5% ?

Have a look at
about the computation strategies of the flysmart, I really find it interesting.

JABBARA 29th Apr 2023 22:28

Thank you Sonicbum,
Nice video
Although in some specific cases performance engineer interference is needed, I understand this added future of FSA is very helpful
:ok:

Note When I was watchin video, I remembered ACG is calculated for approach flap, not GA flap, so have corrected it


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