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Post by Mike Monce - HJG on Jan 17, 2008 18:10:34 GMT
On the other thread it was mentioned about the nosewheel being into the pavement and also some concern about its compression strength. Here's a revised [contact point] line for some of you to try. Let me know if it is what people are looking for.
Backup your cfg file, then replace the first line in the [contact points] section with this:
point.0 = 1, 35.0571, 0, -8.9779, 1574.809, 0, 0.9, 40, 0.40, 2.5, 0.987, 5, 5, 0, 0, 0
Mike
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Post by parkcentral on Jan 17, 2008 18:34:00 GMT
I do hope you take this the right way, Mike.
I tried it and I think there are still some issues:
-In a neutral poistion, when taxing, the nose-gear now seems to floot just a little instead of actually making contact with the ground.
-When braking, the nose-gear still sinks into the ground (somehat less than before perhaps). At max braking it sank as far as the lower edge of the rim.
Mike, your efforts are really appreciated, but maybe this one needs just a little more tweaking...
Cheers,
Nils
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Post by Mike Monce - HJG on Jan 17, 2008 21:05:08 GMT
Nils,
No offense taken. The reason I put this out there is so I could get feedback ;D
Could you tell me what speed you were at when braking? I tried with max braking on touchdown and didn't see that much sinking (using instant replay). Also, for more info: are you using pedals for braking? What sensitivity do you have the brakes set at inside FS? I'm using CH Pro pedals set at about 50% sensitivity.
One more thing to look for: Is the sinking occurring after the strut compresses? OR>> is the entire plane tipping forward and the mains coming off the ground?
I think I can adjust if the wheel isn't quite touching the ground.
Mike
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Post by Mike Monce - HJG on Jan 17, 2008 21:34:26 GMT
Just did another test for myself with the aircraft at 90,000 lbs. I definitely see the nose wheel going into the ground on braking.
I actually see something opposite from Nils in that I think the nose wheel is still too low and the mains are just floating above the ground when the plane is parked.
Mike
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Post by parkcentral on Jan 18, 2008 18:54:38 GMT
I actually see something opposite from Nils in that I think the nose wheel is still too low and the mains are just floating above the ground when the plane is parked. Tried it once more. You're right about those mains, Mike. I did not really look at those in my earlier test, but they seem to be just a little 'undepressed' or 'overinflated' if you know what I mean. The nose-gear however is far worse on my system. It gives the impression that I could easily put my fist between the ground and the tire, perhaps even more (it's hard to get a good feeling for scale). This is also demonstrated by the shadow of the tire not actually touching the tire. Start out at the default KSEA Runway 34R at about 10 AM in fair weather and you'll see what I mean. Regards, Nils
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Post by Mike Monce - HJG on Jan 20, 2008 15:40:14 GMT
Here's my update on this issue which turns out to be more complicated than I orginally thought After doing some research, and also playing around with a little trick in defining a nav light to be at the same position as the contact points, I found out there's a mismatch between the mdl definitions and the FDE definitions. After a long Sunday morning of testing and tweaking, I think to solve this little annoyance I'm going to have to coordinate with Jon so that the visual model animation is matched up with what the FDE is telling the nose strut to do. Bottom line: hopefully we'll get this worked out for V2.0 Mike
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Post by ponderosa on Jan 21, 2008 4:44:20 GMT
The following contact point values work well for me at all weights - wheels on the ground and a small amount of dip on braking.
point.0 = 1, 35.0571, 0, -8.57, 1574.809, 0, 0.9, 40, 0.2, 2.5, 0.987, 5, 5, 0, 0, 0 point.1 = 1, -3.5058, -15.00, -10.4, 1574.803, 1, 1.5, 0, 1.5, 2.5, 0.642, 5, 5, 2, 0, 0 point.2 = 1, -3.5057, 15.00, -10.4, 1574.803, 2, 1.5, 0, 1.5, 2.5, 0.642, 5, 5, 3, 0, 0
A different question - On my system, not using the HJG panel, the landing lights are visible from the cockpit but the taxi lights (separate switch) are visible from the outside but not from the cockpit. Anyone else have this situation?
Tom Nickerson CYLW
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Post by Mike Monce - HJG on Jan 21, 2008 14:24:04 GMT
Thnaks for the input. I see that the only difference was that you strengthened the strut by a factor of 2: .2 down from .4 . I'll ty this myself. One reason that I didn't go below about .3 in my testing is now we are getting into a range where there is very little "give" in the strut. That may solve the problem of a dip underground, but not realistic in terms of actual behavior. Always tough to find the right compromise between these competing things By defining a nav light at the contact point you can see that the cp for the nose wheel is about 4 ft behind and about 6 inches below the ground from the model. Milton Shupe has said hat unless the model and the FDE line up well then things like nose dipping with struts will be off. Mike
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Post by gus on Jan 21, 2008 14:26:10 GMT
Hello, Ponderosa modifications are working good for me Regards.
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Post by Mike Monce - HJG on Jan 21, 2008 17:47:56 GMT
Just tried Gus's cont. pts. The strut definitely doesn't compress as much, but I still see the nose wheel going into the ground almost to the lower rim. I like where the wheels are setting initially.
Can someone else check about the wheel going into the ground? It may just be me.
Mike
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Post by gus on Jan 22, 2008 9:39:27 GMT
Hello,
What I mean ... is I no suffer more of the sinking noze wheel in the ground ...... so it's work great for me. And yes ...the compression is reduced to a minimum deplacement ..but the movement still visible.
Regards.
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Post by Tony Madge - HJG on Jan 22, 2008 9:48:02 GMT
ok Mike I have just finished my run of duties at work I will check this out and report back
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Post by gus on Jan 22, 2008 13:44:15 GMT
Hello, Illustrations ... No brakes ..... Maximum brakes ..... Before apply the correction the nose wheel was sinking in the ground completely !! (fuselage near the ground .....) Regards.
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Post by parkcentral on Jan 22, 2008 15:19:59 GMT
Using the figures posted by Ponderosa, I can concur the pictures gus posted are what I see on my system, with maximum braking on both roll-out and abandonend take-off.
Furthermore, at parking or taxi the main-gear seems to be firmly touching the ground and the nose-gear looks nicely settled.
In my humble opinion there is no real need to further temper with these numbers, untill version 2 comes out.
Thanks to both Mike and Ponderosa for your efforts.
Nils
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Post by Tony Madge - HJG on Jan 22, 2008 15:23:45 GMT
I treid the figures out and the above screenshots are identical to my own Many thanks guys for working on this every little helps us lesser ones get more enjoyment
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