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Nose Pitched high in straight and level flight!! (Read 120 times)
Sep 12th, 2003 at 9:37pm

Simviation2003   Offline
Colonel
IFR is the most demanding
challenge a man can face
North West NSW Australia

Gender: male
Posts: 126
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Hello Fellow Aviator's,

I was wondering if anyone could advise me on how I should go about fixing this problem.

I'm currently flying a Metroliner 23, At cruise altitude and speed, the aircraft is pitched up at the nose at about 15 degrees. Cruise speed is 0.52 mach and cannot increase the speed thinking it will lower the nose.

In spot plane view it looks very un-realistic.

On late final, it is almost impossible to land when you can't see the runway.

Is there anyway of changing the CoG of the aircraft , or is their any suggestions on how I can fix this.

Thanks in advance

SV2003
 
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Reply #1 - Sep 12th, 2003 at 11:33pm

ysteinbuch   Offline
Colonel
A little turbulence doesn't
hurt!
Croton-on-Hudson, NY

Gender: male
Posts: 742
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Did you try trimmming?

Num pad 1 to trim the elevator up (if the nose wants to go down)
Num pad 7 to trim the elevator down (if the nose wants to go up)
Hope it works.
 
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Reply #2 - Sep 13th, 2003 at 3:42am
RollerBall   Ex Member

 
Look in aircraft.cfg. If there isn't a section like the following, put it in

[flight_tuning]
cruise_lift_scalar=1.0
parasite_drag_scalar=1.0
induced_drag_scalar=1.0
elevator_effectiveness=1.0
aileron_effectiveness=1.0
rudder_effectiveness=1.0
pitch_stability=1.0
roll_stability=1.0
yaw_stability=1.0
elevator_trim_effectiveness=1.0
aileron_trim_effectiveness=1.0
rudder_trim_effectiveness=1.0

Then try increasing the cruise_lift_scalar by 0.1 or 0.2 at a time


BTW

Each time you change it, save the file then go to 'select aircraft', select another aircraft in the  window only, don't actually click on OK, then return to your original plane. That way the chagge is picked up by the prog.

Start by increasing it to say 1.4, you'll find the aircraft will try to climb, so you'll have to trim nose down to stop it - problem solved
 
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Reply #3 - Sep 13th, 2003 at 6:05am

logjam   Offline
Colonel
On a wing and a prayer
Lillooet, BC Canada

Gender: male
Posts: 526
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I experienced the same thing a few times when "flying" late into the midnight oil! In my case I had left the flap setting at take off position! Yes, even the best of us (haw haw Grin) Nice to be able to just close things down and jump into bed ain't it!
 

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