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B757: Engine "jumpy" noise and Flap Engage/Retract Q's

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Two questions:1 - When reducing throttles to zero, I often hear a "jumpy" sound in the engines... as if they are spooling down and then spooling up-and-down again quickly. Is this an accurate representation of what would happen in a real plane if one was to move the throttles to zero rapidly?2 - In the B777, one can program in (actually, its nearly automated) to the FMC the flap retraction schedule after takeoff or the flap extention schedule on approach based on aircraft weight. The result is that the flap schedule will be displayed on the HSI. I couldn't figure out how to do this on the B757. Is this possible? Or must one remember the schedule printed on the cards and retract without visual "helping" cues?Thanks.-DK----David KohlFly! II v230Dell 8200 P4/1.8G, 1024MB RAM, Nvidia GF4 Ti4600 v30.82, WinXP Home Edition.CH Pro Pedals and Yoke USB.

  • Commercial Member

David,Regarding the "jumpy" engines, Lefteris was the expert on this and if I remember correctly it had something to do with the way turbine engines are modeled in Fly II that was causing this. hopefully he can clarify this.As far as the Flap Schedule, It was an Airline specific option and the FMC modeled by PMDG does not have the option active. Also most 757's did not have the Airpseed tape on the ADI so you would still have to look down to see the numbers. I only know of 1 or 2 airlines who bought the option as it was quite expensive and the flip cards worked quite well. Hope this helpsRegardsPaul :-cool

Paul Gollnick

Manager Customer/Technical Support

Precision Manuals Development Group

www.precisionmanuals.com

PMDG_NGX_Dev_Team.jpg

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