Simviation Forums

Ok, this may sound dumb, but its bugging me! I have FS9, CFS2 and CFS3. Ive noticed on both CFSs that when I pull high G turns my airspeed drops really fast and im constantly stalling. On FS9, I dont have that problem. I can turn all day long and my airspeed never drops. Id like to know what really happens. Which sim is right? Could someone explain? Thanks!

In a prop, if you pull a high-G turn, you can sure as hell expect your airspeed to drop.  A lot.  In a jet, the airspeed will fall, but not as much.

If you're refering to props in FS, it may have something to do with your realism settings-if they're really low, you can pull an immelman in a 172 at 500 ft.

Ive noticed that too, but I only have CFS and FS9. I thought it had something to do with CFS be old, and maybe they didnt know as much about simulating flight dynamics back then. BTW I fly FS9 with realism on max except for torq (seems a little unrealistic with it on max) and I can turn without stalling immediatly like in CFS.

It might depend on which type of aircraft you're using & also your joystick sensitivity settings. The default aircraft in CFS1/CFS2 always seemed to stall a little too easily to me & I'm not convinced this is realistic. Some were obviously better than others in this respect but I've read that the Spitfire was a pussycat & warned you with a little judder when it was about to stall. Simply ease the back pressure on the stick a little to keep the tightest turn possible for as long as you wished. The CFS flight dynamics are basically the same as used in FS, except maybe FS9 where the flight model was slightly improved. I can't speak for CFS3 as I don't use it.

.......when I pull high G turns my airspeed drops really fast and im constantly stalling....... On FS9, I dont have that problem. I can turn all day long and my airspeed never drops. Id like to know what really happens.  Could someone explain? Thanks!

Which sim is right?

choice "A".....

when I pull high G turns my airspeed drops really fast and im constantly stalling

[quote]"Adverse Yaw

Adverse Yaw ... an operating defect

A fundamental knowledge of aerodynamics is basic to becoming a masterful pilot. A masterful pilot is a safe pilot.

Adverse yaw, like density altitude, is a term tossed about by pilots. Pilots have been trained to know what it is ... at least during their primary training. These terms often become forgotten or ignored with the passage of time.

Flight controls

I don't know if it's the case with modern jets but the rudder is very rarely used during normal flight on jet fighters like the Hawker Hunter. I discovered this myself when allowed a few precious minutes stick time on a Hunter T.7 many years ago. I made the natural mistake of trying to apply rudder in a normal turn only to find the instructor's boot on the opposite pedal preventing it. I asked him when the rudder is used. He said; when taxying & for advanced aerobatics. Charlie will no doubt be able to enlighten me if it's the same on modern jet fighters.

Thanks for the replys. I have the realisim settings on max on all 3 sims. It seems to happen with any prop in either CFS. After reading all the replys ive kinda come to the conclusion that CFS over does it on the stalls and FS under does it.

I don't know if it's the case with modern jets but the rudder is very rarely used during normal flight on jet fighters

 The rudder is used, the person who normally operates it is the only component that isn't . Due to Dutch Roll tendencies, most jets use a Yaw Damper.
The same physics of adverse yaw apply to a jet. The only major difference would be the mild camber associated with a high speed sub-sonic or super-sonic airfoil(much less induced drag).
The Lear for example uses a coupled system with a torque tube interconnect. Essentially, when you roll the airplane, the torque tube on the roll cable transfers energy to the corresponding rudder cable and aids in coordinating the airplane.
On the Lear, while taxiing, the aircraft can be turned with the yoke as well as the rudder pedals. This isn't intentional and the "control yoke" method of steering is much less precise than the correct, intended method of using the pedals but it demonstrates the system very well(especially to new F/O's).
The Lear  also has a primary and secondary Yaw Damper. BUT, deligent use of rudder is absolutey mandatory on this same airplane to prevent dutch roll and maintain coordination during  landing.    (Later models can actually be landed with the yaw damper on.)

Just like autorudder, except it makes things easier, not harder