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[FSDS] My plane doesn't touch the floor (Read 478 times)

Aug 30^th, 2005 at 9:40am

tomy Offline
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I love YaBB 1G - SP1!

Posts: 7

hi everyone,

i juste export an aircrfat form FS Design Studio to FS 2002.

My plane is 3 meters above the road !

so i try to make ( as it said in the official tutorial) some refered part

but nothing changes !

Please help me !

tomy

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Reply #1 - Aug 30^th, 2005 at 10:28am

Felix/FFDS Offline
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To get a better idea - please post a screens shot showing your reference parts positions relative to the model -

Remember, when compiling the model, you HAVE to click on "process reference parts" so that the reference part parameters in your gear.center, gear.left, gear.right reference parts are interpreted and passed on to the aircraft.cfg file.

Felix/FFDS

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Reply #2 - Aug 30^th, 2005 at 1:57pm

Berserk Offline
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Do you check the [contact_points] in the aircraft .cfg??? ?

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Reply #3 - Aug 30^th, 2005 at 5:31pm

Katahu Offline
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I don't use FSDS, I use Gmax. So my idea is just a guess.

When you group the objects for exporting [interior and exterior - and if you do group], try raising or lowering the pivot point of the grouped interior or exterior. I learned this trick when I made the Ferrari.

The closer the pivot point is towards the bottom of either grouped model, the higher the visual model will be in FS. But the model will appear high in the Aircraft Preview screen.

The opposite occurs if you move the pivot point towards the top of either model.

For some odd reason, FS only reads from the location of the pivot point of a grouped model rather than reading off the origin in the grid in Gmax.

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Reply #4 - Aug 31^st, 2005 at 3:54am

tomy Offline
Lieutenant Colonel
I love YaBB 1G - SP1!

Posts: 7

ok this is my aircraft.cfg :

[contact_points]
point.0 = 1, 0.48, 0.00, -3.70, 1000, 0, 0.5, 22.0, 0.3, 2.5, 0.7, 0.0, 0.0, 0
point.1 = 1, -5.02, -4.50, -3.53, 1800, 1, 0.5, 0.0, 0.3, 2.5, 0.7, 0.0, 0.0, 2
point.2 = 1, -5.02, 4.50, -3.53, 1800, 1, 0.5, 0.0, 0.3, 2.5, 0.7, 0.0, 0.0, 2
point.3 = 2, -3.60, -17.9, 2.08, 1574.8, 0, 0.000, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 5, 0.0, 0.0
point.4 = 2, -3.60, 17.9, 2.08, 1574.8, 0, 0.000, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 6, 0.0, 0.0
point.5 = 2, -19.93, 0.0, 0.83, 1574.8, 0, 0.000, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 9, 0.0, 0.0
point.6 = 2, 1.40, 0.0, -1.33, 1574.8, 0, 0.000, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 4, 0.0, 0.0
point.7 = 2, -19.93, 0.0, 6.83, 1574.8, 0, 0.000, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 7, 0.0, 0.0
point.8 = 2, -4.60, 0.0, -1.33, 1574.8, 0, 0.000, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 8, 0.0, 0.0

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Reply #5 - Aug 31^st, 2005 at 7:34am

Hagar Offline
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Tomy. Listen to Felix. In FSDS first create your reference parts & make sure they're named correctly - gear.center, gear.left, gear.right.
Tag them as Reference Parts (not generated) from Part Properties & position them carefully. Then "when compiling the model, you HAVE to click on "process reference parts" so that the reference part parameters in your gear.center, gear.left, gear.right reference parts are interpreted and passed on to the aircraft.cfg file".

If you do all this the model should be automatically exported in approximately the correct position relative to the runway. You might have to manually tweak the [contact_points] section in Aircraft.cfg to get it just right. These are the gear height parameters in your example. (Negative values are in Feet below the reference point of the complete model.)

[contact_points]
point.0 = 1, 0.48, 0.00, -3.70, 1000, 0, 0.5, 22.0, 0.3, 2.5, 0.7, 0.0, 0.0, 0

<---- Nose gear

point.1 = 1, -5.02, -4.50, -3.53, 1800, 1, 0.5, 0.0, 0.3, 2.5, 0.7, 0.0, 0.0, 2

<---- Left gear

point.2 = 1, -5.02, 4.50, -3.53, 1800, 1, 0.5, 0.0, 0.3, 2.5, 0.7, 0.0, 0.0, 2

<---- Right gear

The position of the model in relation to the central reference point in FSDS is also important for it to look right in the sim..

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Reply #6 - Aug 31^st, 2005 at 8:12am

Firestriker Offline
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Gearhart, Oregon

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Contact points are irrelevant untill you establish a proper COG. If you want the model to display well, its extents should be centered at the origin when at rest on the ground. This is frame 150 of the gear animation as stated in the SDK. Then the reference datum is calculated at 1/4 of the cord behind the wings longitudinal apex and vertically with the waterline or the engines virtual crankshaft. All subsequent measurements are taken from this reference datum.

Don't forget, the fuel tank locations also affect how the aircraft sets in the sim and misplaced scrape points can cause crashes right off the bat.

Lou

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Reply #7 - Sep 1^st, 2005 at 8:52pm

MitchellDesigns Offline
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Seeing as how the contacts are so sensitive the easyest way i have found to fix this problem is to move the entire model down until its right. Wink

good juck

MD

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Reply #8 - Sep 1^st, 2005 at 11:18pm

Katahu Offline
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Actually, moving the model in FSDS as a whole might not affect it at all. When exporting, in gmax for example, the makemdl reads off the position of the pivot point within the Interior and Exterior models. Read my last post on the top.

Put my knowledge is based only on Gmax. I don't know if that's also true in FSDS.

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