60North

From a GA type aircraft perspective not very much, they are very direct and light on the controls. On larger aircraft however, it definitely is relevant; - In real there are small delays, cables stretching, bearings slack, hydraulic actuators delays, control surface parts bending, low temperatures causing less tension in wires etc. - But, maybe the biggest reason is the difference in CONTROL FORCES needed between sim hardware and real hardware. There is no way you will be able to deflect the yoke on a real airliner nearly as fast as they do on the sim yoke in your video. To move the controls on airliners in real you need forces of up to 80 lbf (rudder)! Also remember, you most of the time while handflying only use one hand/foot on the controls (other on the throttle) So moving a 30-40 lbf yoke to full deflection with one hand WILL take more time in real than on sim harware - not to mention joysticks which maybe just move 10% of what the real thing does to full deflection. - Another example is the 757 and 767. They both have very similar rollrates at full deflection. However, the 767 yoke only deflects 90 deg, but the 757 deflects 180 deg. So... the 767 will FEEL much more sensitive to the pilot in roll than the 757.. So time delays are both realistic and necessary in a sim to give the most realistic feel, and it also depends on your sim hardware. M

As Murmur said, the default RoG values are usually off, but they are customizable by design in PlaneMaker A skilled designer can fix this in a few minutes. If done right both the short period damping and long period phugoid oscillations will be correct. http://www.xplanefreeware.net/morten/MOV/pitch.mp4 So basically just up to the designer..

Cameron said in his very first response to you; There is your technical explenation, you will have problems when upgrading-> which again might cause the aircraft not working properly -> which will annoy you -> which will make you file bugreports -> which will have us chasing bugs that do not exists -> which again will delay further progress of the aircraft -> which affects everyone. M

Thanks Ryan, that means a lot to us personally, looking forward to your Mac release :smile:

I will :wink: About the dihedral, he is showing lack of knowledge on how this works, and from what I can tell from his movie, the aircraft is performing just fine. (I wount go into the aerodynamic details here, but 25+ deg bank, coordinated turn.. seriously? And not even mention other parameters that ALSO influence lateral stability) Regarding his "aerobatics" and yaw induced roll - it's not even worth to even comment on, he has absolutely no idea what he is talking about! PMDG, you are doing just fine, this guy obviously has an agenda. (And this is with FULL oposite aileron+spoilers)

This is correct. X-Plane has a much more advanced wing than FSX/P3D. In X-Plane we can have dozens of wing stations with individual airfoils, incidence, dihedral washout, sweep, reynolds# etc. FS has a much simpler approach mainly dealing with "total" forces. Also there is the stability, I think the expression "flying on rails" best can be related to this. Phugoid Oscillations (long term), Short period oscillations (short term), Roll subsidence, Dutch roll, spiraling etc. XP handles most of these very well out of the box (if the aircraft is well designed). But, offcourse - like all sims - it doesn't help you if you do not have the skills or information needed to take advantage of this. X-Plane also has a few "issues", which you need to know about if you aim for the highest level of flightmodell realism, So ultimately it boils down the the skill of the designer/team, but personally I'm convinced that PMDG (being very skilled) will be able to create better performing aircraft in XP than in FS.

Welcome to the X-Plane world PMDG team! She is a real beauty, and from what I've seen so far the level of detail and love put into it by the developers is amazing, I can already tell it has a "soul" and "character" - congratulations! This will be another milestone in XP history, and I am really looking forward to flying it. So to all x-planers - lets give them the warm welcome they deserve next week!

LA, I think the expression "flying on rails" best can be related to Phugoid Oscillations (long term), Short period oscillations (short term), Roll subsidence, Dutch roll, spiraling etc. XP handles most of these very well out of the box (if the aircraft is well designed)

FYI guy's, with regards to flightmodel in XP, there has been a huge development. You have the core model which is very advanced and dynamic, but now you can also ad extra forces and overwrite or "bend" the core model in most areas with a bit of programming skills. So basically a skilled designer/team can do just about anything he wants - everything the pilots here have mentioned is no big deal to adjust. I think the problem is many designers in XP have not yet taken advantage of the capabilities that exists and just use the out of the box flightmodel. As an engineer working on Xps flightmodel for 15 years, and knowing alot about how "the other sim" works, there is no question in my mind as to which sim is more powerful from an engineering and dynamics point of view. But remember, an aircraft will never be better than it's designer in any sim

http://forums.x-pilot.com/forums/forum/183-general-discussion/ M

No problem, but there is a big difference between "bugs", "not modelled right" and "not modelled yet". So please try to keep them apart

All of these claims are wrong! - FLCH does work just like the real one and we have not had one single complaint on it by the loads of 737 real pilots that have tried it for over 1000 hrs of block time. - Autobrake, which I personally gave Austin the documentation on is 737 values. - We have a 100% custom engine model which is most likely the most accurate jet-model ever made in ANY sim in terms of thrust and drag at all altitudes, mach and temperatures. The FMC is still missing a few functions as we stated long before release, but will be implemented. And yes, we had our share of bugs - like everyone else.

Outstanding work B)

Try with a bit of surface winds (waves)

Very nice B)