Author Topic: Rudder flight modeling  (Read 4791 times)

Offline Midway

  • Persona Non Grata
  • Platinum Member
  • ******
  • Posts: 4579
Rudder flight modeling
« on: July 03, 2012, 11:30:43 AM »
I don't know whether to post this here or in help, but I notice that moving the rudder in an aeroplane, for example, the ME 262 (and others) from right to left and back again causes an immediate swing of the nose of from 45 to what seems to be almost 90 degrees while moving at 200 to 300 mph.  

I have never piloted for real and am no expert on aero dynamics, but it seems that wind resistance at these speeds should not enable an aeroplane to move along the yaw axis this easily.  :headscratch:

I wish for the aero dynamics to be as realistic as possible.   :aok

PS: I do have scaling enabled on this axis.  
« Last Edit: July 03, 2012, 11:52:12 AM by Midway »


    PARADISE ON EARTH  ------->  http://www.youtube.com/v/g_D4RhfCY2M&autoplay=1&hd=1&fs=1   <-------  PARADISE ON EARTH :)



Offline icepac

  • Platinum Member
  • ******
  • Posts: 6974
Re: Rudder flight modeling
« Reply #1 on: July 03, 2012, 12:19:11 PM »
Are you using full rudder trim that direction as well when you test it?


Offline Midway

  • Persona Non Grata
  • Platinum Member
  • ******
  • Posts: 4579
Re: Rudder flight modeling
« Reply #2 on: July 03, 2012, 12:27:44 PM »
Are you using full rudder trim that direction as well when you test it?



neg. I have autotrim on.


    PARADISE ON EARTH  ------->  http://www.youtube.com/v/g_D4RhfCY2M&autoplay=1&hd=1&fs=1   <-------  PARADISE ON EARTH :)



Offline 10thmd

  • Silver Member
  • ****
  • Posts: 1872
Re: Rudder flight modeling
« Reply #3 on: July 03, 2012, 12:36:53 PM »
I have a feeling midway can't judge angles very well.
- Der Wander Zirkus -
“You can all go to hell; I will go to Texas

Offline Midway

  • Persona Non Grata
  • Platinum Member
  • ******
  • Posts: 4579
Re: Rudder flight modeling
« Reply #4 on: July 03, 2012, 12:48:11 PM »
I have a feeling midway can't judge angles very well.

See film below... note the compass degrees at each extreme.. swings almost to North heading starting at 45 deg and to past 60.

Rudder extremes example.ahf

Also note how fast I can swing from one extreme to the other.... Can a real aeroplane do this flying almost 300mph? :headscratch:

Maybe it can... I don't know, but it just seems very loose and almost like swinging from a chandeliers feeling to me.




    PARADISE ON EARTH  ------->  http://www.youtube.com/v/g_D4RhfCY2M&autoplay=1&hd=1&fs=1   <-------  PARADISE ON EARTH :)



Offline 10thmd

  • Silver Member
  • ****
  • Posts: 1872
Re: Rudder flight modeling
« Reply #5 on: July 03, 2012, 01:03:19 PM »
15 degrees of compass movement is way short of the 90 you where quoting.
- Der Wander Zirkus -
“You can all go to hell; I will go to Texas

Offline Midway

  • Persona Non Grata
  • Platinum Member
  • ******
  • Posts: 4579
Re: Rudder flight modeling
« Reply #6 on: July 03, 2012, 01:12:35 PM »
15 degrees of compass movement is way short of the 90 you where quoting.

15?

Film shows it almost touching going full north (say to 10deg) to then 70deg....  70 -10 = 60deg.

So 50 or 60 degrees of movement from one extreme to the other mulitiple times in a few seconds.

I don't know the exact extremes, but the point is it swings somewhere between 45 and 90 degrees which seems like a lot at almost 300mph.

I wish that I either be told that this is in fact realistic or that it be corrected. :salute
« Last Edit: July 03, 2012, 01:19:52 PM by Midway »


    PARADISE ON EARTH  ------->  http://www.youtube.com/v/g_D4RhfCY2M&autoplay=1&hd=1&fs=1   <-------  PARADISE ON EARTH :)



Offline earl1937

  • Gold Member
  • *****
  • Posts: 2290
Re: Rudder flight modeling
« Reply #7 on: July 03, 2012, 01:44:55 PM »
 :salute
15?

Film shows it almost touching going full north (say to 10deg) to then 70deg....  70 -10 = 60deg.

So 50 or 60 degrees of movement from one extreme to the other mulitiple times in a few seconds.

I don't know the exact extremes, but the point is it swings somewhere between 45 and 90 degrees which seems like a lot at almost 300mph.

I wish that I either be told that this is in fact realistic or that it be corrected. :salute
:salute Midway, in a real aircraft, 1 or 2 things could happen real quick with the situation you describe. You would either, assuming you are maintaining wings level, snap roll in the direction of the nose movement and wind up in a flat spin! Or, in the worst case, structural failure could result from a yaw of the magnitude you describe.either one is not a pleasent situation. You can get away with that in Aces High, but not in a real aircraft.
Blue Skies and wind at my back and wish that for all!!!

Offline Midway

  • Persona Non Grata
  • Platinum Member
  • ******
  • Posts: 4579
Re: Rudder flight modeling
« Reply #8 on: July 03, 2012, 01:49:09 PM »
:salute :salute Midway, in a real aircraft, 1 or 2 things could happen real quick with the situation you describe. You would either, assuming you are maintaining wings level, snap roll in the direction of the nose movement and wind up in a flat spin! Or, in the worst case, structural failure could result from a yaw of the magnitude you describe.either one is not a pleasent situation. You can get away with that in Aces High, but not in a real aircraft.

Should be fixed in Aces High. :old:


    PARADISE ON EARTH  ------->  http://www.youtube.com/v/g_D4RhfCY2M&autoplay=1&hd=1&fs=1   <-------  PARADISE ON EARTH :)



Offline Ack-Ack

  • Radioactive Member
  • *******
  • Posts: 25260
      • FlameWarriors
Re: Rudder flight modeling
« Reply #9 on: July 03, 2012, 01:53:16 PM »
Should be fixed in Aces High. :old:

You're basing your assumption that something is wrong with the flight model based on your lack of knowledge of aerodynamics..

ack-ack
"If Jesus came back as an airplane, he would be a P-38." - WW2 P-38 pilot
Elite Top Aces +1 Mexican Official Squadron Song

Offline Babalonian

  • Platinum Member
  • ******
  • Posts: 5817
      • Pigs on the Wing
Re: Rudder flight modeling
« Reply #10 on: July 03, 2012, 01:54:28 PM »
Don't forget #3 - things can bend before they break
-Babalon
"Let's light 'em up and see how they smoke."
POTW IIw Oink! - http://www.PigsOnTheWing.org

Wow, you guys need help.

Offline Babalonian

  • Platinum Member
  • ******
  • Posts: 5817
      • Pigs on the Wing
Re: Rudder flight modeling
« Reply #11 on: July 03, 2012, 01:56:10 PM »
Should be fixed in Aces High. :old:

Works fine, try it with any non-nancy-boy plane with more delicate/tempermental yaw characteristics.  Some planes can keep the tail behind the prop easier than others.
-Babalon
"Let's light 'em up and see how they smoke."
POTW IIw Oink! - http://www.PigsOnTheWing.org

Wow, you guys need help.

Offline Midway

  • Persona Non Grata
  • Platinum Member
  • ******
  • Posts: 4579
Re: Rudder flight modeling
« Reply #12 on: July 03, 2012, 01:56:33 PM »
You're basing your assumption that something is wrong with the flight model based on your lack of knowledge of aerodynamics..

ack-ack

No. :rolleyes:

Based on my belief using basic intuitive reasoning that such extreme movements seem unrealistic. :)

AKAK :bhead


    PARADISE ON EARTH  ------->  http://www.youtube.com/v/g_D4RhfCY2M&autoplay=1&hd=1&fs=1   <-------  PARADISE ON EARTH :)



Offline Ack-Ack

  • Radioactive Member
  • *******
  • Posts: 25260
      • FlameWarriors
Re: Rudder flight modeling
« Reply #13 on: July 03, 2012, 02:32:12 PM »
No. :rolleyes:

Based on my belief using basic intuitive reasoning that such extreme movements seem unrealistic. :)


Oh but you are, you're just not bright enough to realize it. 

Are you basing your claim there is an issue on fact or on belief?  Please provide data that shows there is an issue with how the rudders are modeled incorrectly in game that consists more than "your belief". 

ack-ack
"If Jesus came back as an airplane, he would be a P-38." - WW2 P-38 pilot
Elite Top Aces +1 Mexican Official Squadron Song

Offline Midway

  • Persona Non Grata
  • Platinum Member
  • ******
  • Posts: 4579
Re: Rudder flight modeling
« Reply #14 on: July 03, 2012, 02:36:19 PM »
Oh but you are, you're just not bright enough to realize it. 

Are you basing your claim there is an issue on fact or on belief?  Please provide data that shows there is an issue with how the rudders are modeled incorrectly in game that consists more than "your belief". 

ack-ack

Not being an aero dynamics engineer or RL pilot, unable... Ergo my raising the issue hoping real pilots either confirm or refute my belief/intuition.    :)

Do you have anything more useful to add? :)


    PARADISE ON EARTH  ------->  http://www.youtube.com/v/g_D4RhfCY2M&autoplay=1&hd=1&fs=1   <-------  PARADISE ON EARTH :)