Elbit Hermes 450

[John Young]

If you ask for help Wojtek, and the test we are suggesting takes less than a minute, it would be courteous, perhaps, not to ignore it. You might well have a number of FS9 aircraft running in FSX, but they all have different FDE's.

I tested the aircraft in FS9 and FSX this morning and the results were the same in both sim versions.

As Steve says, the aircraft is stable at 30 fps. At 25 fps it starts to bounce and at 10fps, it's manic. This is at single speed. Try it at 4X speed and it is manic at all frame rate settings.

The frame rate is not the primary cause of course but you can overcome the problem by running at 30 fps and above at single speed. The FDE is unstable on the ground for both sims. I don't have time to delve into that at the moment, but Miljan might want to look at the contact points, particularly the compression damping in the contact points and test down to 10 fps.

John.

[Wojtek]

Thanks guys for so much help.
I did tests at different airports and the problem repeats, for example the first JYAI Black Hawk is taxiing (accidentally) and not bounce, the next Hermes is bounce.
FPS: my computer allows a maximum of 35 fps, an average of 18-20 frames - I have set to unlimited. Maybe that's the reason?
Setting the limit to 25 frames worsens.
Maybe I'll wait for the conversion.
I think my problem does not have a big impact on the military aviation in the world
Thanks again Miljan, John, Firebird, tango 234 and Martin,
greetings
wojtek

[John Young]

Doesn't that prove the point? For the same frame rate setting, the Blackhawk doesn't bounce, but the Hermes does. So it's not the scenery, it's the aircraft.

Rather than wait for the conversion, which may also carry over the FDE problem, you can solve the bounce yourself with a bit of experimentation. Try first adjusting the damping ratio in the contact points.

If you are indeed porting many FS9 aircraft into FSX, as you suggest, frame rate may suffer, particularly if your PC is not of a high spec. FS9 aircraft will work in FSX, but they are nowhere near as efficient as FSX aircraft compiled in native code. It's because FSX then runs two engines - one for FSX elements and one for FS9 components. You need to achieve (not set/run), around 25 fps minimum. 18-20fps will generally give you problems. Setting your frame rate slider to "unlimited" sounds like a must for you.

John

[Wojtek]

I tried to increase or decrease this value (it's 0.7 ,I tried 0.1; 0.9; 1.0; 0.6) unfortunately it doesn't help.
wojtek

[John Young]

Then you need to look at the compression ratio next.

John

[John Young]

This new set of values for the contact points creates stability for me. Tested in FSX at 4 x speed at 10fps and the UAV was rock stable throughout taxi and take-off:

point.0 = 1, 7.00, 0.00, -3.000, 1500, 0, 0.25, 22.0, 0.5, 1.0, 0.7, 0.0, 0.0, 0
point.1 = 1, -1.10, -4.50, -3.450, 3500, 1, 0.40, 0.0, 0.5, 1.0, 0.7, 0.0, 0.0, 2
point.2 = 1, -1.10, 4.50, -3.450, 3500, 2, 0.40, 0.0, 0.5, 1.0, 0.7, 0.0, 0.0, 3

I haven't tried them in FS9, but they should fix the problem there too.

John

[Wojtek]

I did a short test with my fsx and it looks perfect now.
Tomorrow I will test it at other "heavier" airports.
Thanks John

[Firebird]

Weird, I re-tested and still can't get it to bounce. However, if JY's mod fixes it for somebody that does get it then I am happy with that.

[John Young]

At 10-20fps in FS9 Steve, it was bouncing all over the place. Try it at 4 x speed for even more fun.

[miljan]

Strange, Even I didn't have any bouncing.

[miljan]

Fixed version is uploaded together with John Youngs contact points parameters and a bit better prop texture.

Cheers guys and sorry for all this issue.