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Author
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Topic: Planes center of gravity....
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ArgonV
Pilot
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posted 08-10- 04:01 AM
   
I think this is a main reason why some planes feel like they are "hanging from a string" The center of gravity for most planes is centered yes, but I think its not "spread out" enough. Is the center of gravity on any large object (say a car) one small little point? Or is the center of gravity kinda like a large ball shaped mass? Is it "spread" out some? I still think most planes feel too bouncy and this issue has ben brought up by me before yes, but nothing was really done about it. If the SoS guys are working on a fix to this issue to be addressed by the next patch (after the RC sim) please mention this to me. It seems to me that the FM is actually not the problem after examining some planes bouncing since they all seem to be "hinged" if you will at the center of gravity. Any inputs? comments? suggestions? IP: Logged |
wakeup tailgunner
Pilot
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posted 08-10- 05:00 AM
Centre of gravity, in the true sense, is a point in space. Whether the game uses it in that sense I don't know. Perhaps that is what causes the effect. IP: Logged |
Gecko
Pilot
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posted 08-10- 07:47 AM
The center of gravity (or better refered to the center of mass) is a fictional point in space that gives the average point of the mass distribution. It is however an important concept in how to decribe mechanics of a rigid body.Another concept that is useful in rigid body mechanics is the tensor of inertia. This gives what you are talking about, namely the distribution of mass around the center of gravity. These two parameters (c.o.g and inertia tensor) define the mechanical properties of a rigid body completely. Thus increasing the values of the tensor of inertia will make planes less responsive (less bouncy). -Gecko IP: Logged |
Sv
Pilot
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posted 08-10- 08:27 AM
With OpenPlane you do not set the CG point. This point is calculated by the OpenPlane engine based on the weight distribution. You set the weight distrubution by creating inertia boxes on each of the aircraft's parts. These boxes can have different primitive "tensor" types like box, cone, and sphere, and cylinder. Cylinder and box are the most common.The COG is the point that the mass pivots/rotates around. Allot the the FM work centers around COG and weight distribution, no pun inteneded  Look at Zur's SE5a for eample, he concentrated the weight more towards the center to make the SE5a more "twitchy," the SE5a is less risistant to yaw/pitch/roll changes. But I am just giving my basic understanding of it here... I am usually at least a bit off ------------------
-Sv =FC=
WWI in SDOE!
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CrossbowArcher
Pilot
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posted 08-10- 09:41 PM
Check out the air-launched V1, I made the CG of the rear inertia box WAY back so it pulls the thing out into a glide instead of nosing down.(off topic)Other pts of note:
The forward airfoil behaves like a canard plane and adds to instability. IP: Logged |
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