Roy McHeyligers (flightofficer)
Roy McHeyligers (flightofficer)
TraineeTrainee
Joined: Dec 28, 2004 Posts: 7 Location: Amsterdam, The Netherlands
Asked

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Kindly would somebody know whether (or not) it is normal for a DC-9 to return to level flight by itself when left to it in a bank?

The (great!) SGA model, both series 10 & 30, which I've got for FS2004 does not appear to maintain bank attitude very well when hand-flying the plane. My solution is to flight-tune it a bit by altering both Aileron Effectivity and Roll Stability values in the aircraft.cfg but I am not at all sure this leads to realistic aircraft behavior, although it feels a bit better now.

What is flying turns in a real DC-9 like?

Suggestions and tips very welcome indeed. Thanks.

Roy McHeyligers and Sydney Starkey (that's right, Sid Star),
Amsterdam, The Netherlands.

Answers 6 Answers

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David (The-GPS-Kid)
David (The-GPS-Kid)
CaptainCaptain
Joined: Jul 12, 2004 Posts: 830 Location: Newcastle, England, UK
Answered

Hi Sid Star (fab name),

I assume you are talking about the yoke being returned back to it's neutral (centred position) once you reach the bank angle ?

If you mean this, then yes, the DC9 will slowly level out - most airliners will behave in this way..... Planes that naturally remain in a banked position are known as having "Neutral Stability" and are mainly aerobatic planes such as the Extra 300 within Flight sim.

They are designed to achieve this by having a very evenly balanced weight distribution through the wings and across the fuselage.

Very few airliners would remain in a banked angle once you returned the Yoke to it's centred position - Modern Airbus planes would but this is done entirely by artificially by computers (fly-by-wire) which are in effect making the necessary Aileron adjustments to maintain the bank angle, even though the pilot is not required to adjust his sidestick to maintain the angle.

😉

Roy McHeyligers (flightofficer)
Roy McHeyligers (flightofficer)
TraineeTrainee
Joined: Dec 28, 2004 Posts: 7 Location: Amsterdam, The Netherlands
Answered

Hey GPS Kid,

I'd heard about "Neutral Stability"in some aircraft, so now I know what that is. Thanks. I do feel the SGA DC9 levels out rather quickly and a little uncomfortably so. I have adjusted the .cfg file a bit and although it will still level back (as I now know it normally will) the handling has improved quite a bit, hopefully within real limits. I call this mod my "Tamed Dog" Flight Tuning by the way.

Thanks for your kind reply,

Regards
Sid Star.



Last edited by Roy McHeyligers (flightofficer) on Sun Apr 10, 2005 1:27 am, edited 1 time in total
David (The-GPS-Kid)
David (The-GPS-Kid)
CaptainCaptain
Joined: Jul 12, 2004 Posts: 830 Location: Newcastle, England, UK
Answered

You're very welcome. I like the "Tamed Dog" name!

leadfoot
leadfoot
First OfficerFirst Officer
Joined: Mar 13, 2004 Posts: 368
Answered

Most airplanes will level out if banked no more than 30 degrees. After that you must use opposite aileron to level out. Planes with high dihedral will level out quicker than planes with low dihedral. P.S. My spelling may be off on this one. Embarassed

tomthetank
tomthetank
Chief CaptainChief Captain
Joined: Aug 24, 2003 Posts: 3392 Location: Newport S/Wales
Answered

Read 👍

Sydney Starkey (SID_STAR)
Sydney Starkey (SID_STAR)
TraineeTrainee
Joined: Apr 07, 2005 Posts: 3 Location: Amsterdam, The Netherlands
Answered

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Thanks everydobby...

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