posted 03-23- 01:14 PM               

1) For the CG reference of an inertia box:
Is 0,0,0 always assumed to be the physical center of the inertia box or is the origin assumed to be at one of the corners?

2) Why are cylindrical inertia boxes not used more for the fuselages?

3) Are the weight of the guns added automatically? I was thinkng about adding a hidden part with mass properties where the guns in the wings are mounted to get better weight distribution.

3) Can you put a tank in each wing and call them both Main for the fuel source?

4) Just to make sure:
Default reference
Z axis- vertical axis with positive #'s above the origin.
Y axis- horizontal left to right axis with positive nembers to the right of the origin.
X axis- "view" axis. Runs perpendicular to the YZ plane with positive numbers on the section running towards the viewer.

Reason I ask is Real3D uses a different axis sytem. I've used it for so long it gets me screwed up when using a different axis configuration.

posted 03-23- 03:21 PM               

2) Not sure. If the fuselage is round (Corsair), I use a cylinder. If it's oblong (Mustang), I use a box.

3) Good question. I think the weight of the AMMO is figured in, but I bet the guns themselves are "absorbed" by whatever body part they're in. You can always add a phyLBS property and a phyCylInertia to them to be sure.

3) (Two 3's by the way) You should be able to specify as many tanks as you want for the engFuelSource.

4) X-axis goes from left wingtip to right. Y-axis goes from nose to tail. Z-axis goes up and down through the canopy.

posted 03-23- 08:05 PM               

quote:

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Originally posted by jedi:

4) X-axis goes from left wingtip to right. Y-axis goes from nose to tail. Z-axis goes up and down through the canopy.

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Are the positive coordinates found on the X axis going from the origin thru the the left wing or right wing?

Y is positive from the origin towards the tail and th Z is positve from the origin going up thru the canopy. Right?

Thanks

posted 03-23- 11:17 PM               

2) Just the way it is I guess

3) Guns are just like other objects, they need inertia volumes defined to have mass, and therefore weight. See the note about the undocumented ammoBox on the WWW patch forum. This adds weight according to the number of rounds left for the gun.

4) Probably not the same name, since the engine will only find the first one it comes across. If you give them different names and list the names as fuel sources, I beleive that the engine will draw from both equally.

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Wings with Wires